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077
Medical IT System Insulation Monitoring and Fault Locating
Devices
(Seven-Piece Set)
Installation and Operation Manual V2.8
Acrel Co., Ltd.
Declaration
Please read this manual carefully before using this series of products, in which
the involved pictures, logos, symbols, etc. are all reserved by the Acrel Electric Co.,
Ltd. Personnel not inside the company shall not publicly reprint all or part of the
contents without written authorization.
Before using the IT system which is made up of this series of products, please read
the tips and precautions in this operation manual, and Acrel does not take responsibility
for personal injuries or economic losses caused by ignoring tips of this manual;
Transformers and related insulation monitors are professional electrical equipment,
and any relevant operation needs to be carried out by specialized electrical technicians.
Acrel does not take responsibility for personal injuries or economic losses caused by
improper operations of non-professionals.
The contents of the manual will be continuously updated and revised, thus the
products functions in this manual may inevitably have a slight discrepancy with the
real objects during the continuous upgrading process. Users should give first place
to the purchased real products, and can search www. acrel.cn to downloads or through
sales channels to obtain the latest version of the manual.
Revision history
Number
of times
Revision
date
Versions after
revision
Reasons for revision
01 2016.1.20 V2.0
On the basis of the original insulation monitoring
products, all seven pieces of products are
integrated into the content to completely replace
the specifications of the products.
02 2016.11.7 V2.1
The overview added "products conform to Enterprise
standards Q31/0114000129C013-2016 IT System
Insulation Monitoring Instrument” .
03 2017.6.27 V2.2 Product wiring diagram was optimized.
04 2018.5.23 V2.3 Modified product wiring diagram.
05 2019.3.5 V2.4 Changed component model.
06 2019.10.30 V2.5
Adjustments were made in accordance with the new
requirements of IEC 61557-8/9:2014
07 2020.7.2 V2.6 Add location setting in AID150 setting interface
08 2020.8.24 V2.7 Some product pictures and errors have been updated
09 2020.11.16 V2.8
Improved expansion function of AIL150 (allowed to
extend to 3 sets of 24 loops)
Note:
Table of Contents
1 Introduction.......................................................................................................................................1
2 Function features.............................................................................................................................3
2.1 Function features of AITR series medical isolation transformer.......................3
2.2 Function features of AIM-M200.........................................................................................3
2.3 ASG150 test signal generator...........................................................................................4
2.4 AIL150-4/AIL150-8 insulation fault locator...............................................................4
2.5 Function features of AID150 centralized alarm and display instrument...........4
2.6 Function features of HDR-60-24 power supply instrument.......................................5
2.7 Function features of AKH-0.66P26 current transformer...........................................5
3 Reference standard...........................................................................................................................5
4 Technical parameters.......................................................................................................................6
4.1 Technical parameters of AITR series medical isolation transformer.................6
4.2 Technical parameters of AIM-M200 medical intelligent insulation monitoring
instrument.......................................................................................................................................7
4.3 Technical parameters of ASG150, AIL150-4/AIL150-8 test signal generator.....8
4.4 Technical parameters of AID150 centralized alarm and display instrument.....8
4.5 Technical parameters of HDR-60-24 power supply instrument.................................9
4.6 Technical parameters of AKH-0.66P26 current transformer.....................................9
5 Installation and wiring...............................................................................................................10
5.1 Shape and mounting hole size.........................................................................................10
5.2 Installation method...........................................................................................................12
5.3 Wiring method.......................................................................................................................15
5.4.1Typical wiring diagram...................................................................................................19
5.5 Considerations.....................................................................................................................20
6 Programming and application.......................................................................................................22
6.1 Panel description...............................................................................................................22
6.2 LED indicator instructions.............................................................................................22
6.3 Button function descriptions.........................................................................................24
6.4 Button operation descriptions.......................................................................................24
7 Communication protocol.................................................................................................................30
7.1 Modbus-RTU communication protocol...............................................................................30
7.2 CAN communication description.......................................................................................34
8 Typical applications.....................................................................................................................38
8.1 Applications of insulation monitoring and fault locating seven pieces of
products in ICU/CCU...................................................................................................................38
9 Powerup and debugging instructions.........................................................................................38
9.1 Wiring check.........................................................................................................................38
9.2 Common faults and eliminations.....................................................................................39
9.3 Settings and debugging.....................................................................................................41
1
Medical IT System Insulation Monitoring and Fault Locating Devices
1 Introduction
The medical IT system is mainly used in important Class 2 medical locations such as operating
room, ICU/CCU intensive care unit, providing safe, reliable and continuous power distribution for
the important equipment at these locations. Medical insulation monitoring and fault locating device
is developed by the many years’ design experience of the Acrel Electric in electric power meter
industry, according to the special requirements of the insulation monitoring and fault locating
of the power distribution system in Class 2 medical locations. The products can realize the real-time
monitoring of insulation, load and temperature of isolation transformer in IT system, and have the
functions of system insulation fault loop positioning and centralized monitoring by multiple pieces
of systems. Products conform to the provisions of enterprise standard Q31/0114000129C013-2016 IT
System Insulation Monitoring Instrument.
Medical IT system insulation monitoring and fault locating products (seven-piece set) include
AITR series medical isolation transformer, AIM-M200 medical intelligent insulation monitoring
instrument, AKH-0.66P26 current transformer, AIL150-4/AIL150-8 insulation fault locator, ASG150
test signal generator, HDR-60-24 power module and AID150 centralized alarm and display instrument,
which are shown in Table 1.
Table 1 Medical IT System Insulation Monitoring and Fault Locating Products
Product name and type Product picture Description
AITR series medical
isolation
transformer
AITR series isolation transformer is specially
used in medical IT system. The windings are treated
with double insulation and have electrostatic
shielding layer, which reduces electromagnetic
interference between windings. The PT100
temperature sensor is installed in the wire bag to
monitor the temperature of transformer. The whole
body is treated with vacuum invasion paint, which
increases mechanical strength and corrosion
resistance. The product has good temperature rise
performance and very low noise.
AIM-M200 medical
intelligent
insulation monitor
AIM-M200 medical intelligent insulation
monitoring instrument adopts advanced
microcontroller technology, which has high
integration, compact size, convenient
2
installation and integrates intelligence,
digitalization and networking in one. It is ideal
selection for insulation monitoring of isolation
power system in Class 2 medical locations such as
operating room and intensive care unit.
AKH-0.66P26 current
transformer
The AKH-0.66P26 type current transformer is
the protective current transformer supporting the
AIM-M200 insulation monitor, of which the maximum
measurable current is 60A and the transformation
ratio is 2000:1. The current transformer is
directly fixed inside cabinet by screwing, and the
secondary side is leaded out by the terminal, which
is convenient to install and use.
AIL150-4/AIL150-8
insulation fault
locator
AIL150-4/AIL150-8 insulation fault locator
adopts high sensitivity transformer combined with
high precision signal detecting circuit, which
detects the signal imported into the system from
ASG150 test signal generator and accurately
locates the circuits which have insulation faults.
AIL150-4 insulation fault locator can locate the
insulation faults of 4 circuits, and the AIL150-8
insulation fault locator can locate the insulation
faults of 8 circuits.
ASG150 test signal
generator
The ASG150 test signal generator adopts 32-bit
microprocessor chip and high-precision signal
generation circuit to realize the generation of
specific test signal. When the monitored IT system
has insulation faults, it can start up and produce
test signal in time, working with the insulation
fault locator to realize insulation fault
location.。
3
HDR-60-24 power
module
HDR-60-24 direct-current power supply can
provide 24V DC power supply simultaneously for
AIM-M200 medical intelligent insulation
monitoring instrument, ASG150 test signal
generator, AIL150 series insulation fault locator
and AID150 centralized alarm and display
instrument. The power supply is of high capacity,
stable voltage output and convenient installation,
which can meet the power-supply requirements of the
above-mentioned meters and is the recommended
power supply product.
AID150 centralized
alarm and display
instrument
AID150 centralized alarm and display
instrument adopts the LCD liquid crystal display
and achieves data exchange with AIM-M200 medical
intelligent insulation monitoring instrument
through RS485 communication interface, which can
real-time monitor multi-channel data of AIM-M200
medical intelligent insulation monitoring
instrument.
2 Function features
2.1 Function features of AITR series medical isolation transformer
The transformation ratio between the primary and secondary windings is 1:1;
Double insulation treatment is adopted between the windings, and the electrostatic shielding
layer is designed.
The PT100 temperature sensor is installed in each wire packet to monitor the temperature of
the isolation transformer;
Used for the transformation of TN system into IT system (ungrounded system) after isolation
transformer.
2.2 Function features of AIM-M200
Functions of real-time monitoring and fault alarming of the ground insulation resistance,
transformer load current and transformer winding temperature of the monitored IT system;
Can be used with insulation fault locator, remotely starting fault-locating and displaying
locating results when there are insulation faults;
4
Real-time monitor the line disconnection fault, temperature sensor disconnection fault and the
functional grounding line disconnection fault of the monitored system, and give the alarm
indication within 2S after the fault occurs. when the fault occurs;
Relay alarm output, LED alarm indication and other faults indication functions;
Two kinds of fieldbus communication technology, which are used for centralized alarm and display
instrument, test signal generator, insulation fault locator and upper computer management
software communications, and can monitor the operation status of IT system in real time.
Events logging function, which can record alarm occurrence time and fault type and is convenient
for operation personnel to analyze the operation conditions of system and promptly eliminate
the faults;
2.3 ASG150 test signal generator
The CAN bus technology is used to exchange data with other equipment.
When the monitored IT system has an insulation fault, it can initiate and generate the fault
location signal to the system, and realize fault locating function with the help of fault
locator;
Functions of L1, L2 disconnection detection, and can display the results through the luminous
LED.
2.4 AIL150-4/AIL150-8 insulation fault locator
The CAN bus technology is used to exchange data with other equipment.
Cooperate with ASG150 test signal generator to realize fault locating function, in which the
AIL150-4 can locate the insulation faults of 4 circuits and AIL150-8 can locate the insulation
faults of 8 circuits. The positioned circuit is indicated by the LED indicator.
2.5 Function features of AID150 centralized alarm and display instrument
Remotely monitor the real-time operation conditions of up to 16 pieces of systems, and the main
interface intuitively displays whether the access system communication is intact;
The insulation resistance alarm value, load current alarm value and transformer temperature
alarm value of each system insulation monitoring instrument can be set up remotely, and the
insulation monitor self-test can be activated remotely.
When there are insulation faults, overload, excessive temperature rise of the voltage
transformer or wiring faults in any of the monitored system, centralized alarm and display
instrument can provide corresponding sound and light alarm function, and can manually eliminate
the alarm sound.
5
Events logging function, which is convenient for operation personnel to analyze the operation
conditions of system and promptly eliminate the faults, and can save maximum of 20 newest
records;
2.6 Function features of HDR-60-24 power supply instrument
AC 220V input, DC 24V output, with max output power of 60W;
Used for the DC 24V power supply for AIM-M200 medical intelligent insulation monitoring
instrument, ASG150 test signal generator, AIL150 series insulation fault locator, AID150
centralized alarm and display instrument and other instruments.
2.7 Function features of AKH-0.66P26 current transformer
The maximum measurable current is 60A, and the transformation change ratio is 2000:1;
Work with the AIM-M200 insulation monitoring instrument to measure the load current of isolation
transformer.
3 Reference standard
◆ IEC 60364-7-710: 2002 Building electrical installations section 7-710: Requirements for special
installations or locations----medical locations;
◆ IEC 61557-8-2014 Electrical safety of low voltage distribution system below AC 1000V and DC
1500V, Test, measurement or monitoring equipment for protection test section 8: Insulation
monitoring device for IT systems;
◆ IEC 61557-9-2014 Electrical safety of low voltage distribution system below AC 1000V and DC
1500V, Test, measurement or monitoring equipment for protection test section 9: insulation fault
positioning equipment for IT systems;
◆ JGJ 16-2008 Code for electrical design of civil buildings;
◆ IEC61558-1: 2009 Safety of power transformers, power supplies, reactors and similar products
section 1: General requirements and tests;
◆ IEC61558-2-15: 2011 Safety of power transformers, power supplies and similar products section
16: Special requirements for isolation transformers for power supply in medical locations.
6
4 Technical parameters
4.1 Technical parameters of AITR series medical isolation transformer
Refer to Table 2.
Table 2 Technical Parameters of AITR Series of Medical Isolation Transformer
Type AITR10000 AITR8000 AITR6300 AITR5000 AITR3150
Insulation
class
H H H H H
Protection
class
IP00 IP00 IP00 IP00 IP00
Power /Voltage /Current
Rated power 10000VA 8000VA 6300VA 5000VA 3150VA
Rated frequency 50-60Hz 50-60Hz 50-60Hz 50-60Hz 50-60Hz
Rated input
voltage
AC230V AC230V AC230V AC230V AC230V
Rated input
current
45.3A 36A 28.5A 22.5 14.2A
Rated output
voltage
AC230V/115V AC230V/115V AC230V/115V AC230V/115V AC230V/115V
Rated output
current
43.5A 34.7A 27.4A 21.7 13.7A
Inrush current <12In <12In <12In <12In <12In
Leakage current <200μA <200μA <200μA <200μA <200μA
No load input
current
1.359A 1.08A 0.855A 0.675A 0.426A
No load output
voltage
235V±3% 235V±3% 235V±3% 235V±3% 235V±3%
Short circuit
voltage
<6.9V <6.9V <6.9V <6.9V <7.5V
General parameters
Fuse wire 80A 63A 50A 35A 25A
Primary winding
resistance
<55mΩ <64mΩ <80mΩ <131 mΩ <245mΩ
Secondary
winding
resistance
<45mΩ <64mΩ <80mΩ <116 mΩ <228mΩ
Iron loss <150W <105W <107W <77W <55W
Copper loss <230W <200W <170W <125W <120W
Efficiency >96% >96% >96% >96% >95%
7
Maximum ambient
temperature
<40℃ <40℃ <40℃ <40℃ <40℃
No-load
temperature
rise
<36℃ <33℃ <31℃ <26℃ <22℃
Full load
temperature
rise
<65℃ <76℃ <67℃ <62℃ <55℃
Noise grade <40dB <40dB <40dB <40dB <40dB
4.2 Technical parameters of AIM-M200 medical intelligent insulation monitoring instrument
Refer to Table 3.
Table 3 Technical Parameters of AIM-M200 Medical Intelligent Insulation Monitoring
AUX Power Voltage DC 18…36V
Temperature
monitoring
Thermal
resistor
2 Pt100
Power
consumption
≤3W Measuring
range
-50…+200℃
Insulatio
n
monitorin
g
Resistance
measuring range
15…999kΩ Alarm value
range
0…+200℃
Response value 50…999kΩ
Alarm
output
Output mode 2 Relays
Relative
uncertainty
±10%,±10K Contact
rating
AC 250V/3A
DC 30V/3A
Response time
≤3s
Environment
Operating
temperature
-10…+55℃
Permissible
system leakage
capacitance Ce
≤5uF
Transport
temperature
-25…+70℃
Measuring
voltage Um
≤12V Storage
temperature
-25…+70℃
Measuring
current Im
≤50uA Relative
humidity
5%-95%，No
condensation
Impedance Zi ≥200kΩ Altitude ≤2500m
Internal DC ≥240kΩ IP degree IP30
8
resistance Ri
Permissible
extraneous DC
voltage Ufg
≤DC280V
Rated impulse voltage /
pollution degree
4KV/Ⅲ
Load
current
monitorin
g
Measuring Value 2.1…50A EMC/EMR IEC 61326-2-4
Alarm Value 5…50A
Communication protocol
CAN，customize
Measuring accuracy ±5% RS485，Modbus-RTU
4.3 Technical parameters of ASG150, AIL150-4/AIL150-8 test signal generator
Refer to Table 4.
Table 4 Technical Parameters of ASG150, AIL150-4/AIL150-8 Test Signal Generator
Item
Technical parameters
ASG150 AIL150-4/AIL150-8
Auxiliary
power supply
Voltage DC 24V DC 18…36V
Maximum power
consumption
≤2VA
Monitored
system
Rated voltage 0…242 VAC
Rated frequency 45… 60Hz
Locating current <1mA r.m.s. —
Fault locating
Maximum circuit
— Four circuits, eight
circuits
Response time — ≤5s
Communication
Mode CAN communication
Protocol Self-defined protocol
4.4 Technical parameters of AID150 centralized alarm and display instrument
Refer to Table 5.
Table 5 Technical Parameters of AID150 Centralized Alarm and Display Instrument
Type
Parameters
AID150
AUX POWER
Voltage DC 24V
Power consumption ≤0.6W
Insulation Resistance Display Range 0…999kΩ
Insulation alarm range 50…999kΩ
9
Transformer Output Current Display Percentage
Current alarm range 14A、18A、22A、28A、35A、45A
Temperature alarm range 0…+200℃
Alarm mode Sound and light alarm
Alarm type Insulation fault, overload, and over temperature
Communication mode RS485,MODBUS-RTU
Display mode LCD liquid crystal display，128*64 dot array
4.5 Technical parameters of HDR-60-24 power supply instrument
Refer to Table 6.
Table 6 Technical Parameters of HDR-60-24 Power Supply Device
Type Input Output
Installation
method
HDR-60-24 100-240VAC 1.8A 24VDC 2.5A
35mm track
installation
4.6 Technical parameters of AKH-0.66P26 current transformer
Refer to Table 7.
Table 7 Technical Parameters of AKH-0.66P26 Current Transformer
Input current
0.05A～50A Frequency
range
0.02-10 kHZ
Output current 0.025～25 mA Loading
resistance
<200Ω
Temperature
coefficient
100 ppm/℃ Transient
current (1s)
200A
Phase
displacement
10 Installation Fixed with 4×10 screws
Operating
temperature
-35～+70℃
Secondary
wiring
Single core >0.75mm2,
Maximum
length of 1 meter
Storage
temperature
-40～+75℃ Single core twisted pair,
0.75mm2
, Maximum length of
10 meters
Secondary
resistance range
95～120Ω Isolation
pressure
5000Vac
Accuracy 0.5% Linearity 0.5%
10
5 Installation and wiring
5.1 Shape and mounting hole size
5.1.1 External dimensions of AITR series medical isolation transformer (unit: mm)
Shape structure and size of AITR series medical isolation transformer are shown as below and in
Table 9 (unit: mm)
External dimensions of AITR series medical isolation transformer
Table 9 External Dimensions of AITR Series Medical Isolation Transformer
Type Capacity (VA) A(mm) B(mm) C(mm) D(mm) E(mm) F(mm) Total weight
(kg) (mm) (mm)
(kg)
AITR10000 10000 280 275 427 240 190 φ11 92
AITR8000 8000 280 265 427 240 190 φ11 90
AITR6300 6300 280 255 427 240 175 φ11 75
AITR5000 5000 280 255 427 240 175 φ11 73
AITR3150 3150 280 225 427 240 175 φ11 53
5.1.2 External dimensions of AIM-M200 medical intelligent insulation monitoring instrument (unit:
mm)
Acrel
AIM-M200
On
Comm
Insulation
Overtemp
Test Menu
Medical Intelligent Insulation Monitor
Overload
1 2 4 5 8 9 11 12
13 14 15 16 17 18 19 20 21 22 23 24
24V G L1 L2 I0 T0 T1
FE KE A B COM1 H L COM2 J1 J2
I1
Front view Side view
11
5.1.3 External dimensions of ASG150 test signal generator (unit: mm)
On Comm
I1 I2 Fault
Acrel
ASG150
Test Signal Generator
www.acrel.cn
8 9
H L
14
PE
1 5
24V L1
2
G
7
L2
Front view Side view
5.1.4 External dimensions of AIL150-4/AIL150-8 insulation fault locator (unit: mm)
Acrel
AIL150-4
On Comm
L1
L2
L3
L4
L1 L2 L3 L4
Front view Side view
Note: AIL150-4 and AIL150-8 these two types take the same product shell, so their external
dimensions are exactly the same.
5.1.5 External dimensions of AID150 centralized alarm and display instrument (unit: mm)
Acrel
On Comm
AID150
Test
Mute Menu
12
Front view Side view Hole size
5.1.6 External dimensions of HDR-60-24 power module (unit: mm)
Front view Side view
5.1.7 External dimensions of AKH-0.66P26 current transformer (unit: mm)
φ 2.3
I
Front view Bottom view
5.2 Installation method
Medical IT system insulation monitoring and fault locating instrument seven pieces of products
are preferably installed in the distribution cabinet (isolation power cabinet) except for the AID150
centralized alarm and display instrument. The isolation transformer is installed in the bottom of
the distribution cabinet fixed with matching bolts, and the cooling fan should be installed. The
instrument and the circuit breaker are installed on the upper panel. If the isolation transformer
is installed separately, it is not suitable to put it too far away from the AIM-M200 insulation
monitor. If the AID150 centralized alarm and display instrument is used in the operation room, it
can be embedded in the wall and installed in the operating room next to the intelligence panel,
so that the medical staff can view conveniently. If it is used in ICU/CCU and other intensive care
units, it should be installed in the nurses station, so that the duty nurses can view. AID150 external
wirings include two 24V power cords and a RS485 communication line of two-core shielded twisted
pair, which are all drawn from the isolation power cabinet. Pay attention to reserve pipelines during
13
construction.
5.2.1 Installation mode of AIM-M200 medical intelligent insulation monitoring instrument
AIM-M200 insulation monitor adopts the installation method of the guide rail, and the fixation
mode is the clip buckle type, as shown in the following figure:
5.2.2 Installation mode of ASG150 test signal generator
The ASG150 adopts the installation method of the guide rail, and the fixation mode is the clip
buckle type, which can be installed on the same guide rail as AIM-M200 insulation monitor.
5.2.3 Installation mode of HDR-60-24 power module
The HDR-60-24 power module adopts the installation method of the guide rail, and the fixation
mode is the clip buckle type, which can also be installed on the same guide rail as AIM-M200 insulation
monitor.
5.2.4 Installation mode of AIL150-4/AIL150-8 insulation fault locator
AIL150-4/AIL150-8 adopts the installation method of the guide rail, and the fixation mode is
the clip buckle type, as shown in the following figure:
Since each branch of IT system must pass through each transformer of the AIL150 and then connects
to the load, the AIL150 should be near the output terminal of each branch during the installation
to facilitate the wiring.
5.2.5 Installation mode of AID150 centralized alarm and display instrument
1) If you choose to embed the wall for installation, the installation diagram is as follows:
35mm guide rail
Clip buckel
14 1.Product shape 2.Size of wall
openings
3.Insert the shell
into the wall
5.Fixed LCD board
and Shell
4.Connect to the
LCD board through
the terminal
Attention：
As our products
are constantly
updated, this
drawing is for
reference only
until it has been
confirmed by the
relevant
personnel.
Acrel
Run Comm Error Alarm
AID150
TEST
MENU
During the decoration, firstly the AID150 shell should be embedded in the wall to be fixed and be
close to the knockouts of the pipeline, so that the wires (two power cords + a two-core shielded
twisted pair) can be drawn to the front cover, and then fix the cover on the shell with screws.
2）If you choose to install AID150 by opening the cabinet door, the installation diagram is as
follows:
15 AID150 shape Separate the product
body from the cassette
Install the cassette on
the door panel
Hole size of door
panel
Screw Clasp
Fix the panel to
the cassette
Screw
Attention：
As our products
are constantly
updated, this
drawing is for
reference only
until it has
been confirmed
by the relevant
personnel.
5.3 Wiring method
5.3.1 Wiring mode of AITR series medical isolation transformer
The input terminals at the transformer terminal blocks are labeled with “PM”, in which two
terminals 0 and 230 are connected to the input 220V single-phase AC. The output terminals are labeled
with “SEC”, in which the output voltage of two terminals 0 and 230 is AC 220V and is connected
to external field load. The S terminal is connected to the PE bus bar on the spot (or the equipotential
terminal line). Two ST terminals are temperature sensor interfaces, which are respectively connected
to the No.11 and 12 terminals of AIM-M200 insulation monitoring instrument.
Figure 2 AITR series medical isolation transformer terminal blocks diagram
16
Note: The wirings of input and output terminals of the isolation transformer should select the copper
wires matching the line diameter based on the isolation transformer rated input and output current
(refer to tables in section 5.4). S terminal wiring can select 2×4mm2
yellow-green wire. The wiring
of two ST terminals can select 2×1.5mm2
shielded twisted pairs, and the wiring should not be too
long.
5.3.2 Wiring mode of AIM-M200
Upper row terminals: 24V, G for the auxiliary power supply, and L1, L2 are connected to the monitored
IT system (which can be connected can be connected with U1 and U2 in parallel, and then connected
to the two output terminals of isolation transformer). I0, I1 for the current transformer signal
input, and T0, T1 as the temperature sensor signal input.
Lower row terminals: KE, FE are the functional grounding wires, which should be connected to the
on-site equipotential terminals by two independent wires. A and B for RS485 communication terminals,
H and L for CAN communication terminal blocks (which are used for the communication connections
with ASG150 test signal generator, AIL150 series insulation fault locator and AID150 centralized
alarm and display instrument), J1 for over-temperature alarm output (for control of cooling fan),
and J2 for fault alarm relay output.
Note:
注
1)
为用于CT二次侧短接的试验端子
：
is used for the test terminals of CT secondary side short connection.
17
2) The wirings connecting the No.1 and 2 terminals of the insulation monitoring instrument to the
24V power supply can select 2×1.5mm2 copper wires, and the L1 and L2 terminals corresponding to
the No.4 and 5 can select 2×1.5mm2 multistrand copper wires, and the FE and KE terminals
corresponding to the No.13 and 14 can select 2×4mm2 yellow-green wires (grounding wires). J1, J2
relay output are the dry nodes, which need additional power supply during the control of external
load. For example, J1 controls AC 220V cooling fan, then the AC 220V power supply is needed, and
the wiring line type should be determined according to the load current.
3) The transformer signal wires corresponding to the No.8, 9 terminals, the temperature signal wires
corresponding to the No.11, 12 terminals, the RS485 communication wires corresponding to the No.15,
16 terminals, as well as the CAN communication wires corresponding to the No.18, 19 terminals line
can select 2×1.5mm2
shielded twisted pairs, and the COM port for communication is not connected.
5.3.3 Wiring mode of ASG150 test signal generator
Upper terminal (1-7): 24V and G are auxiliary power supply, L1 and L2 are connected with monitored
it system (parallel connection can be made to output terminal of isolation transformer); lower
terminal (8-14): PE is connected to equipotential terminal block on site, h and L are can
communication terminals (used to connect with aim-m200 insulation monitor and ail150 insulation
fault locator communication terminals).
8 9
ASG150
14
1 2 5 7
Note: Please refer to the wire type selected by aim-m200 insulation monitor for relevant wire
type selection.
5.3.4 Wiring mode of AIL150-4/AIL150-8 insulation fault locator
Upper row terminals (1-2): 24V, G are auxiliary power supply. Lower-row terminals (21-24,28): H,
L are CAN communication terminals (used for communication terminals connection with medical
intelligent insulation monitor, centralized alarm and display instrument, and test signal
18
generator).
Lower-row terminals (23,24,28): F1, F2,F3 are used for the loop expansion function of insulation
fault locator. When the number of circuits needed to located is beyond 8 in one set of IT system,
you can simultaneously use three (and three at most) AIL150 series insulation fault locators. When
expanding the second insulation fault locator, the wiring of terminals F1 and F2 needs to be short
circuited; when expanding the third insulation fault locator, the wiring of terminals F1 and F3
should be short circuited. After short circuit connection, the number of branches located by the
second fault locator becomes 9-12 (AIL150-4), or 9-16 (AIL150-8); the number of branches located
by the third fault locator becomes 17-20 (AIL150-4), or 17-24 (AIL150-8).
In order to ensure the normal operation of CAN communication, the CAN interface of each
instrument needs to be connected by a hand in hand approach, at the same time, the head and end
of the communication bus wire should be connected with a 120Ω matching resistor. The AIL150 series
insulation fault locator can connect the built-in matching resistors to the bus wire in parallel
through the dial code switch. When the CAN communications of each instrument are connected hand
in hand, the AIL150 can be placed on the head or end of the CAN bus wire, and the two dial code
switches should be dialed to position 1 (that means the top), thus the 120Ω matching resistors
can be added to ensure smooth communication. If the AIL150 is at the end of the CAN bus wire, the
two dial code switches should be dialed to the position 0 (that means the bottom) to disconnect
the matching resistors.
Note: The relevant wiring type selection can refer to the above AIM-M200 insulation monitor
selected wire type. The COM port for communication does not connect to the outside.
5.3.5 Wiring mode of AID150 centralized alarm and display instrument
A and B terminals are connected with A and B in the lower terminal of AIM-M200. The terminals of
the power supply correspond to the positive pole and ground of the 24V DC power supply respectively.
The wiring diagram is shown in the following figure.
Auxiliary power supply RS485 communication
The 24V power supply can be connected by multiple copper wires of 2 x 1.5mm2, and the RS485
communication terminal can be connected by shielded twisted pair of 2 x 1.5mm2.
19
5.4.1Typical wiring diagram
Note:
1) The connection line diameter of the input and output of the isolation transformer should match
the rated current of the isolation transformer, or it can be selected according to the following
table:
Isolation transformer type Selected line diameter
AITR3150 3×4mm2
AITR5000/AITR6300 3×6mm2
AITR8000/AITR10000 3×10mm2
2) The auxiliary power supply (instrument working power) for AIM-M200 insulation monitoring
instrument (corresponding terminals: No.1, 2), ASG150 test signal generator (corresponding
terminals: No.8, 9), AIL150 insulation fault locator (corresponding terminals: No.1, 2), and AID150
centralized alarm and display (corresponding terminals: 24V, G) are all DC 24V, which is supplied
by the HDR-60-24 DC power module (24V output terminals: No.3, 4). Considering that the switching
power supply may interfere with the IT system, the AC 220V (corresponding terminals: No.1, 2) input
by DC power module is introduced by the input terminal of the isolation transformer and is connected
with the fuse protector of 6 A.
3) The relay output control of the No.21 and 22 terminals of the AIM-M200 insulation monitor is
20
a dry node, which needs an additional fan power supply when used for the fan control. When multiple
transformers are centrally installed in one isolation power cabinet, multiple fans should be
connected in a parallel mode controlled by multiple insulation monitors, that is, every one
insulation monitor can start or stop all fans.
4) AKH-0.66P26 only needs to pass through one of the L1, L2 two wires of the isolation transformer
secondary side output terminal, but can not pass through the two wires simultaneously. The output
is connected with the 2×1.5mm2 wire to the No.8, 9 terminals of AIM-M200, which is not allowed for
grounding.
5) In order to reliably monitor the grounding insulation of the isolation power system, the No.4,
5 terminals of AIM-M200 insulation monitor should be reliably connected to IT system (which can
be connected in parallel to the output terminal of the isolation transformer) with 2×1.5mm2
multicore copper wires, and the No.13, 14 terminals should be respectively connected to the on-site
equipotential terminals (or the grounding terminals in the isolation power cabinet) with two
independent 4mm2
yellow-green grounding wires.
6) In order to realize reliable fault location, the No.5, 7 terminals of ASG150 test signal generator
should be reliably connected to the IT system (which can be connected to the output terminal of
the isolation transformer) with 2×1.5mm2 multi-core copper wires, and the No.14 terminal should
be connected to the on-site equipotential terminals (or the grounding terminals in the isolation
power cabinet) with one 4mm2
yellow-green grounding wire. The two load distribution wires (excluding
PE wire) of each branch of the isolation power system should together pass through each transformer
of the AIL150 series fault locator in a top-down method, and then are connected to the terminal
load.
7) The CAN communication line between AIM-M200 (terminals 18 and 19), ASG150 (terminals 8 and 9)
and AIL150 (terminals 21 and 22) can be connected by 2 × 1.5mm2 shielded twisted pair. When wiring,
the method of hand-in-hand (that is, after the communication line of the previous table is connected
to the communication terminal of this table, it is led out from the terminal of this table and
connected to the communication terminal of the following table). The head and end of the CAN bus
One matching resistor shall be connected in parallel between the two communication terminals of.
The recommended resistance value attached with the goods is 120 Ω. Terminals 13 and 14 of AIM-M200
are RS485 communication terminals, which are used to communicate with AID150.
5.5 Considerations
(1) Medical IT system insulation monitoring and fault locating seven pieces of products should
be centrally installed in the isolation power cabinet except for AID150. If the field space is too
limited to apply the isolation power cabinet, the isolation transformer can be installed separately,
21
but should not be too far away from the insulation monitor and the field load.
(2) The installation of wiring should strictly follow the wiring diagrams, which should preferably
use the pressure connection with the needle-type fittings, and then insert into the corresponding
terminal of the instrument and tighten the screws to avoid the abnormal work conditions of instrument
caused by loose connection.
(3) The grounding wire of the instrument and the transformer shall be reliably connected with the
equipotential terminals in the field. When applying the isolation power cabinet, it should be
connected to the grounding terminals in the isolation power supply cabinet, and then to the
equipotential terminals in the field.
(4) The current input of AIM-M200 medical intelligent insulation monitoring instrument should use
a matching AKH-0.66P26 type current transformer. It is recommended to use pressure connection with
U-type indenters during wiring operation, and then connect to the CT terminal. Do not directly use
the bare head connection, for the considerations of reliable connection and easy disassembly. Before
removing the wiring, the CT primary circuits must be cut off or the secondary circuits must be short
connection.
（5）Note that AIM-M200 Medical Intelligent Insulation Monitor can not be connected in parallel
with other similar systems (such as residual current monitor).
(6) Special reminder:
Any isolation transformer will have an impact current when it starts up, and too large impact current
may cause the circuit breaker at primary side of the transformer difficult to disconnect or shut
down. Therefore, for medical IT systems composed of medical isolation transformers and insulation
monitoring products, in the selection of inlet circuit breaker of the isolation transformer, it
is recommended to choose the circuit breakers only with short circuit protection but without overload
protection according to GB requirements. If choosing the circuit breaker with overload protection,
the circuit breaker should conform to the C and D tripping curves of GB14048.2-2008, and the rated
current of the circuit breaker should be determined according to the capacity of the isolation
transformer as follows: 10kVA-63A, 8kVA-50A, 6.3kVA-40A, 5kVA-40A, 3.15kVA-20A.
If the circuit breaker selection is not in accordance with the above requirements, the company
shall not be liable for any medical malpractice caused by the closure difficulty of the circuit
breaker or the disconnection of the circuit breaker during operation.
22
6 Programming and application
6.1 Panel description
Acrel
AIM-M200
On
Comm
Insulation
Overtemp
Test Menu
Medical Intelligent Insulation Monitor
Overload
1 2 4 5 8 9 11 12
13 14 15 16 17 18 19 20 21 22 23 24
24V G L1 L2 I0 T0 T1
FE KE A B COM1 H L COM2 J1 J2
I1
AIM-M200 medical intelligent insulation monitoring instrument panel
6.2 LED indicator instructions
6.2.1 LED indicator instructions of AIM-M200 medical intelligent insulation monitoring instrument
Indicator Instructions
On
When the instrument operation is normal, the indicator light flashes,
with the flashing frequency of about one time per second.
Comm
Indicate the status of device communication, when there is data
communication, the indicator light flashes.
Insulation
When the insulation resistance exceeds the alarm value, or when the LL/FK
is disconnected, the indicator light flashes to alarm.
Overload
When load current exceeds the total load current of transformer, the
indicator light flashes to alarm.
Overtemp
When testing transformer temperature exceeds the alarm value, or when
the temperature sensor wiring is disconnected, the indicator light
flashes to alarm.
6.2.2 LED indicator instructions of ASG150 test signal generator
23
Indicator status Instructions
On
When the instrument operation is normal, the indicator light
flashes, with the flashing frequency of about one time per second.
Comm
Indicate the status of device communication, when there is data
communication, the indicator light flashes.
L1 In case of ground fault on L1, "L1" light is on
L2 In case of ground fault on L2, "L2" light is on
Fault
When L1 and L2 disconnection fault occurs to the device, "Fault"
light is on
6.2.3 LED indicator instructions of AIL150-4/AIL150-8 insulation fault locator
Indicator status Instructions
On
When the instrument operation is normal, the indicator light
flashes, with the flashing frequency of about one time per second.
Comm
Indicate the status of device communication, when there is data
communication, the indicator light flashes.
L1…L8 Indicate the circuits of the insulation fault
6.2.4 LED indicator instructions of AID150 centralized alarm and display instrument
Indicator status Instructions
On
When the device is in normal operation, the indicator flashes, and the
flickering frequency is about once a second.
Comm
Indicate the status of device communication, when there is data
communication, the indicator light flashes.
Fault
When AIM series monitor detect disconnection failure, indicator
flashes alarm
Alarm
When AIM-M series monitor exceed threshold alarm, indicator flashing
alarm
24
6.3 Button function descriptions
6.3.1 Button function descriptions of AIM-M200 medical intelligent insulation monitoring instrument
AIM-M200 has four buttons in total, namely the “Setting and Enter” shared button, “” Up button,
“”Down button, and “Self-test” button.
Buttons Button function
Setting and Enter
shared button
In non-programming mode, press this button to enter the programming
mode;
In programming mode, used as the Enter button.
Up button,
Down button
In non-programming mode, used to view the fault records, the version
signal, or to register addresses to AID150. In programming mode, used
to increase or decrease the values and digits, or to change the
protection action status
Self-test button. In operation state, used to start the self-test function of
instrument. In other state, used as return function.
6.3.2 Button function descriptions of AID150 centralized alarm and display instrument
The centralized alarm and display instrument has five buttons in total, namely the “Eliminate sound
button”, “Menu and Enter” shared button, “” Up button, “”Down button, and “Self-test”
button.
Key Functions
Eliminate sound button When there is alarm, press this button to eliminate the alarm
sound.
Up button,
Down button
In programming mode, used to increase or decrease the
single-digit.
Self-test button In non-programming mode, used to start the self-test function of
instrument. In other state, used as return function.
Menu and Enter shared
button
In non-programming mode, press this button to enter the
programming mode;
In programming mode, used as the Enter button.
6.4 Button operation descriptions
6.4.1 Button operation of AIM-M200 medical intelligent insulation monitoring instrument in RUN mode
(1) Enter RUN the operation mode. The mode of the default entry is RUN mode, after the LCD displays
the software version number, if you do not do other button operation, the system goes into RUN mode
25
and starts operation. The main interface shows the insulation resistance value, temperature value,
current value, load rate and current system time.
(2) View the alarm records. In the main interface, press "Down button" to enter the "Fault records
query" interface, and press "enter" button to confirm, then you can turn the pages through "Down
button" or "Up button" to query each fault record in sequence. The first record is the most recent
record, and the tenth is the oldest record.
(3) View software version information. In the main interface, you can see the version information
of the software by pressing the "Down button" twice consecutively.
(4) Register address (CAN communication address) to AID150. When AIM-M200 and AID150 are used
together, if AIM-M200 does not successfully register address to AID150, the manual registration
is required. In the main interface, press the "Down button" three times consecutively, entering
into the AID150 address registration interface, and press Enter button to achieve address
registration. After the registration, it will automatically return to the main interface. If the
registration is successful, the CAN communication indicator light starts flashing, indicating that
communication is normal.
(5) Instrument self-test. In the main interface, press the "Self-test" button, then the monitor
will start the Self-test program, simulating the overload fault, insulation fault and
over-temperature fault to test whether the detection and judgment function of the instrument to
the main faults is normal. If the monitor can detect the above three kinds of faults, it indicates
that the instrument function is normal.
6.4.2 Button operation of AIM-M200 medical insulation monitor in programming mode
(1) Enter the programming mode
Under normal operation conditions, press the "Setting" button to enter into the code input page
of the programming mode. Change the password size by pressing "Up button" or "Down button", and
press "Enter" button after entering the correct password to enter the programming mode.
(2) Exit programming mode
In the programming mode, press the "TEST" key to enter the save confirmation menu, select [Y] or
[N] through the "UP" or "DOWN" key, and then press the "ENTER" key to exit the programming mode.
If [Y] is selected before exit, the parameter settings will be saved; if [N] is selected, the
parameters will not be saved.
(3) System password setting
In programming mode, select [Other Settings] by "Up button" or "Down button", and press "Enter"
button to enter other settings item, then make the password number part reverse video by "Up button"
or "Down button", and press "Enter" button to confirm the modification. At this time you can change
the password value by "Up button" or "Down button", and press "Enter" button to confirm after
modification, then press "Self-test" button to save and exit programming mode. Examples of
operations are as follows:
ENTER
UP/DOWN
Input Password
0000
2012-10-10 12:28:43
R>999 KΩ T=023℃
I = 0.0 A (00%)
Press
MENU
Input Password
0001
Set Comms Set Alarm
Set Clock Set Misc.
Set Comms Set Alarm UP/DOWN
Set Clock Set Misc.
Password: 0001 LCD: 00
B. Light: On Clear:N
Enter
26
(4) Alarm parameter setting
Alarm parameters are used to set the parameters of system insulation alarm, current overload alarm
and transformer temperature alarm, which are similar to the steps of "system password setting".
The following only provides examples for setting insulation alarm value, current overload alarm
value and temperature alarm value.The insulation alarm value is set to 50kΩ, and the current alarm
value is set to 14A and the temperature alarm value is set to 70℃. The procedure is as follows:
(5) Communication settings
Communication settings include RS485 communication settings and CAN communication settings.
2012-10-10 12:29:43
R>999 KΩ T=023℃
I = 0.0 A (00%)
Password: 0001 LCD: 00
B. Light: On Clear:N
UP/DOWN
Password: 0002 LCD: 00
B. Light: On Clear:N
ENTER Password: 0002 LCD: 00
B. Light: On Clear:N
Set Comms Set Alarm
Set Clock Set Misc.
Save Setting？ UP/DOWN
Y N
UP/DOWN
Save Setting？
Y N
ENTER
TEST
ENTER
Set Comms Set Alarm ENTER
Set Clock Set Misc.
Res :040kΩ Curr:035A
Temp:060℃
UP/DOWN Res :050kΩ Curr:035A
Temp:060℃
Res :050kΩ Curr:035A
Temp:060℃
ENTER
Res : 050kΩ Curr: 035A UP/DOWN
Temp:060℃
ENTER Res : 050kΩ Curr: 035A
Temp:060℃
Res : 050kΩ Curr: 014A
Temp:060℃
UP/DOWN
ENTER Res : 050kΩ Curr: 014A
Temp:060℃
UP/DOWN Res :050kΩ Curr:014A
Temp:060℃
Res :050kΩ Curr:014A
Temp:060℃
ENTER
Res :050kΩ Curr:014A UP/DOWN
Temp:070℃
TEST
save/quit
2012-10-10 12:29:43
R>999 KΩ T=023℃
I = 0.0 A (00%)
27
The RS485 Communication settings include settings of the communication address and communication
baud rate, and CAN communication settings mean to set the communication address, which can also
set whether the instrument is supporting the use of fault locator. The RS485 communication address
is set to 005, and the primary baud is set to 9600bps. The CAN communication address is set to 003,
with a fault locator. Examples of programming are as follows:
(6) Other parameter settings.
The settings for other parameters include contrast settings, backlight time settings, and
clearing fault records, which are similar to the setting methods of system password settings. Here
is no more descriptions.
6.4.3 Button operation of centralized alarm and display instrument
6.4.3.1 AID150
1) Description of the Operating Interface
After the system is powered on, if there is no fault alarm, AID150 shows the normal operation
interface as shown in the following figure. The black boxes in the figure indicate that the
corresponding address serial number is connected to the instrument communication, and the black
boxes indicate that there is no instrument connection, or that the communication is not connected.
2012-10-10 12:29:43
R>999 KΩ T=023℃
I = 0.0 A (00%)
SetComms Set Alarm
Set Clock Set Misc.
ENTER 485 Ad:001 Baud:4800
CAN Ad:001 LOCAT:NO
ENTER 485 Ad:001 Baud:4800
CAN Ad:001 LOCAT:NO
UP/DOWN
485 Ad:005 Baud:4800
CAN Ad:001 LOCAT:NO
485 Ad:005 Baud:4800 ENTER
CAN Ad:001 LOCAT:NO
485 Ad:005 Baud:4800 UP/DOWN
CAN Ad:001 LOCAT:NO
ENTER
485 Ad:005 Baud:4800
CAN Ad:001 LOCAT:NO
UP/DOWN 485 Ad:005 Baud:9600
CAN Ad:001 LOCAT:NO
ENTER 485 Ad:005 Baud:9600
CAN Ad:001 LOCAT:NO
UP/DOWN
485 Ad:005 Baud:9600
CAN Ad:001 LOCAT:NO
ENTER 485 Ad:005 Baud:9600
CAN Ad:001 LOCAT:NO
UP/DOWN 485 Ad:005 Baud:9600
CAN Ad:003 LOCAT:NO
ENTER
485 Ad:005 Baud:9600
CAN Ad:003 LOCAT:NO
UP/DOWN 485 Ad:005 Baud:9600
CAN Ad:003 LOCAT:NO
ENTER 485 Ad:005 Baud:9600
CAN Ad:003 LOCAT:NO
UP/DOWN
485 Ad:005 Baud:9600
CAN Ad:003 LOCAT:YES
ENTER 485 Ad:005 Baud:9600
CAN Ad:003 LOCAT:YES
TEST
save/quit
28
When the insulation monitor or residual current monitor detects the fault, AID150 displays the
corresponding alarm interface and sends out the corresponding sound and light alarm.
System normal
2015-07-02 12:30:45
--------------------
-- --
System fault(01/02)
Fault type:Insu
BRK OL OT
Loc.:ICU Bed:04
System fault(02/02)
L1:OK L2:OK
L3:OK L4:ORC
Loc.:OR Room:06
Normal system fault indication（AIM-M200） fault indication（AIM-R100）
2）Fault record viewing interface operations and descriptions
--------------------
Check fault
Press Enter>>>
--------------------
-------NO.01--------
Loc.:ICU Bed:04
Type:insulation
2015-07-02 12:30:45 Time:15-01-01 16:32
--------------------
-- --
Press up and
down key Press Enter
-------NO.03--------
Press Erasure to return
System normal
Slave addr.:00
Type:No record
Time:00-00-00 00:00
Press up and down key
3) Programming Interface Operation and Explanation
The operation method and process are shown in the following flow chart.
29
Slave Comm
Clear Firmware
Password Time
Save param settings?
Y N
Press Up and Down to select YES or NO
Press Enter to confirm
2015-07-02 12:30:45
Password
Time set
NO. of slaves: 16
--------------------
Baud rate: 9600
--------------------
Insulation
Load
Temperature
35A
50KΩ
70℃
01 02 03 04 05 06 07
08 09 10 11 12 13 14
15 16
-----Slave addr.-----
--------02--------
Alarm and displayer
--------------------
--------------------
Fault record cleared!
--------------------
--------------------
RC loop no.
Alarm value
---------01---------
10mA
ALL
Clear SOE ?
Y N
--------------------
--------------------
--------------------
--------------------
--------------------
--------------------
--------------------
--------------------
--------------------
--------------------
NO.:483 Ver.:V1.06
--------------------
0000
-------------------- 2015-07-02 12:30:45
--------------------
-- --
Press Up and Down to
select the Time and
press Enter to confirm.
Press Up and Down to set password, press
Erasure to save or exit
Alarm delay 99S
System normal Press MENU
Press Erasure to return
Input password: Press Up and Down to input password
Press Enter to confirm
Press Enter to confirm
Press Enter and Up and Down to set time,
press Erasure to save or exit
Press Up and Down to
select the Comm and
press Enter to confirm.
Press Up and Down to
select Firmware and
press Enter to confirm.
Press Erasure to return
Press Up and Down to
select the Clear and
press Enter to confirm.
Press Erasure to return
Press Up and Down to
select the Slave and
press Enter to confirm.
Press Up and
Down to select
and press Enter
to confirm.
Press Up and
Down to select
and press Enter
to confirm.
Press Up and Down to select
and press Enter to confirm.
Press Enter and Up and Down to set parameter,
press Erasure to save or exit
Press Enter and Up and Down to set parameters,
press Erasure to save or exit
Save param settings
YES NO
--------------------
--------------------
--------------------
--------------------
Press Up and Down to
select the Comm and
press Enter to confirm.
Press Enter and Up and Down to set parameters,
press Erasure to save or exit
Language: Chn
0001
Location： ICU
Loop: 01 Bed Num:004
System voltage: 220V
Press Enter and Up and Down to set parameters, ---Slave Addr. 01---
press Erasure to save or exit
Press Up and Down to
select Location and
press Enter to confirm.
30
7 Communication protocol
7.1 Modbus-RTU communication protocol
7.1.1 Introduction
In seven pieces of products, the communication between the AIM-M200 insulation monitor and the
upper computer uses the Modbus-RTU communication protocol. The Modbus protocol particularly defines
the check code, the data sequences and so on, which are the necessary contents of the specific data
exchange. The Modbus protocol uses a master-slave responsive connection (half-duplex) on a
communication line, which means the signal on a single communication line is transmitted in two
opposite directions. Firstly, the signal from the main computer is addressed to a unique terminal
device (slave computer), and then the answering signal emitted from the terminal device is
transmitted to the host in the opposite direction.
The Modbus protocol only permits communication between hosts (PC, PLC, etc.) and terminal
devices, without allowing the data interchange between independent terminal devices. So that
terminal devices do not occupy communication lines when they are initialized and are limited to
in response to the query signals arriving at the computer.
7.1.2 Introduction to the function code
7.1.2.1 Function code 03H or 04H: Read the registers
This function allows the user to acquire the data collected and recorded by equipment and the system
parameters. The number of data requested by hosts has no limit, but cannot exceed the defined address
range.
The following example shows how to read a measured insulation resistance value from No.01 slave
computer, with the address of the insulation resistance value of 0008H.
The host computer
sends
Send
message
The slave computer
returns
Return
message
Address code 01H Address code 01H
Function code 03H Function code 03H
Start
address
High
byte
00H Bytes 02H
Low byte 08H
Register
data
High
byte
00H
Number of
register
High
byte
00H
Low
byte
50H
31
s
Low byte 01H
CRC check
code
High
byte
21H
CRC check
code
High
byte
74H
Low
byte
75H
Low byte 0CH
7.1.2.2 Function code 10H: Write the registers
The function code 10H allows the user to change the contents of multiple registers, which can write
the time and date in this meter. The host can write up to 16 (32 bytes) data at a time.
The following example shows a preset address of 01 with an installation date and time of 12:00,
Friday, December 1st, 2009, in which the Monday to Sunday are replaced with number 1 to 7.
The host computer sends
Send
message
The slave computer
returns
Return
message
Address code 01H Address code 01H
Function code 10H Function code 10H
Start address
High
byte
00H
Start
address
High
byte
00H
Low
byte
04H
Low
byte
04H
Number of
registers
High
byte
00H Number of
register
s
High
byte
00H
Low
byte
03H
Low
byte
03H
Bytes 06H
CRC check
code
High
byte
31H
0004H
Data to be
written
High
byte
09H
Low
byte
C9H
Low
byte
0CH
0005H
Data to be
written
High
byte
01H
Low
byte
05H
0006H High 0CH
32
Data to be
written
byte
Low
byte
00H
CRC check
code
High
byte
53H
Low
byte
3FH
7.1.3 Parameter address table in medical intelligent insulation monitoring instrument
No. Address Parameter
Read-write
property
Value range
Data
type
1
0000H Protecting
passwords
R/W 0001-9999 (Default value is
0001)
Word
2
0001H high
byte
RS485
Communication
address
R/W 1~247 (Default value is 1)
Word
0001H low
byte
RS485
Communication BPS
R/W 1~4 ： 4800 、 9600 、
19200bps(Default value is 2)
3
0002H high
byte
CAN address R/W 1-110 (Default value is 1)
0002H low Word
byte
There is fault
location device or
not
R/W 1：yes，0：no (Default value is
0)
4
0003H high
byte
LCD contrast ratio R/W 0-63 (Default value is 0)
Word
0003H low
byte
Backlight timeout R/W 0: Normally open，1-99（Unit is
Min）
5
0004H high
byte
Year R/W 1-99
Word
0004H low
byte
Month R/W 1-12
6
0005H high
byte
Day R/W 1-31
Word
33
0005H low
byte
Week R/W 1-7
7
0006H high
byte
Hour R/W 0-23
Word
0006H low
byte
Minute R/W 0-59
8
0007H high
byte
Second R/W 0-59
Word
0007H low
byte
Reserve R
9
0008H Insulation
resistance
R/W 10-999（Unit is KΩ）
Word
10 0009H Load current R/W 0-500（Unit is 0.1A） Word
11
000AH Transformer
temperature
R/W 40-140(Unit is℃)
Word
12
000BH high
byte
Fault circuit 1-8
Word
000BH low
byte
Fault type R Bit0:1 Insulation resistance
fault
Bit1:1 Overload fault
Bit2:1 Transformer overheat
fault
Bit3:1 L1 or L2 disconnection
fault
Bit4:1 PE or KE disconnection
fault
Bit5:1 Temperature sensor
disconnection fault
Bit6:1 Current transformer
disconnection fault (preset)
Bit7:1 Device fault
13-
16
000CH-000FH Preset
17 0010H Insulation R 10-999（Unit is kΩ）(Default Word
34
resistance set
value
value is 50)
18
0011H Load current set
value
R 0-50(Unit is A) (Default value
is 35)
Word
19
0012H Transformer
temperature set
value
R 0-200(Unit is ℃ ) (Default
value is 70) Word
20-
23
0013H-0016H Preset
24
0017H high
byte
Preset R
Word
0017H low
byte
Event control
parameters
The storage event record
number of next event
25
0018H high
byte
Event
record 1
Reserv
e
R
Word
0018H low
byte
STA1 R Event 1 content
26
0019H high
byte
Year1 R Event 1 time -year
Word
0019 low
byte
Moth1 R Event 1 time -month
27
001AH high
byte
Day1 R Event 1 time -day
Word
001AH low
byte
Hour1 R Event 1 time -hour
28
001BH high
byte
Minute
1
R Event 1 time -minute
Word
001BH low
byte
Second
1
R Event 1 time -second
29-
64
001CH-003FH
The rules and formats of the remaining 9 event records in this part of space
are the same with event 1.
7.2 CAN communication description
7.2.1 Introduction
Among the seven pieces of products, the aim-m200 insulation monitor, ail150 series fault locator
35
and asg150 test signal generator form a can communication subsystem. Their address is the same
address, and they are distinguished by identification. The communication rate is 400kbps.
7.2.2 Agreement
Frame
start
Arbitratio
n segment
Control
segment
Data segment
CRC
segment
ACK
segment
Frame end
When the data frame reaches the terminal device, it enters the addressable device through a simple
“port”. The device removes the envelope "envelope" (data header) of the data frame and reads the
data. If there is no data, the task requested by the data is executed. Then, if the returned data
is available, the data generated by itself is packed in the “envelope”, and the data frames are
returned to the sender.
7.2.2.1 Data frame format
7.2.2.2 Frame start
Represent a segment that a frame starts, with dominant of a bit.
The bus wire has two kinds of electrical levels which are “dominant” and “recessive”. When
executing the line “and” on the bus wire, the logical value of the dominant level is “0”, and
the logical value of the recessive level is “0”. “Dominant” has the meaning of “priority”,
as long as there is a unit outputting dominant level, the bus wire is the dominant level.
“Recessive” has the meaning of “containment”, only when the output of all units is the recessive
level, the bus wire is the recessive level.
7.2.2.3 Arbitration segment
The segment representing the data precedence.
The data frames stipulated in the CAN communication protocol have two formats, which are standard
format and extended format, and the arbitration segments of the two formats are different. Acrel
AIM-M200 insulation monitors uses the standard format, of which the arbitration segment has 11 bits.
It is sent in turn from ID28 to ID18, and prohibits the high 7 bits are all recessive.
7.2.2.4 Control segment
The control segment consists of 6 bits, representing the number of bytes in the data segment,
and the composition of the standard format and the extended format is different.
The Acrel AIM-M200 insulation monitor uses the standard format, consisting of a IDE bit, a
36
reserved bit, and 4 bits of data-length-code DLC.
Note that the bytes of data must be 0-8 bytes, but the receiver does not consider the case of
9-15 as an error.
7.2.2.5 Data segment
Data segment can contain data of 0-8 bytes, starting with the MSB (Most significant bit).
7.2.2.6 CRC 段
7.2.2.6 CRC segment
The CRC segment is the frame that examines the frame transmission error, consisting of 15-bit
CRC sequences and 1-bit CRC delimiter (the bit used for separation).
CRC sequence is the CRC value generated by the polynomial, and the calculation range of CRC
includes frame start, arbitration segment, control segment and data segment. The receiver calculates
the CRC with the same algorithm and makes comparisons. If any inconsistencies, it will notify the
error.
7.2.2.7 ACK segment
The ACK segment is used to confirm that the reception is normal, consisting of two bits that
are an ACK slot (ACK Slot) and an ACK delimiter.
An ACK is sent in the unit(the sending unit does not send an ACK) which can receive the normal
message and belongs to one of all receiving units that are neither in the bus shutdown nor in
hibernation. A normal message means a message that does not contain a stuff error, a formal error
or a CRC error.
7.2.2.8 Frame end
The frame end is a segment representing the end of the frame, consisting of 7 recessive bits.
7.2.3 Communication application
In communication, a data frame can be divided into multiple segments with different functions.
Except for the data segment, the meaning of the other segments has been explained in the previous
section, so this section will not explain in detail, and only describes the information of data
segment.
The data bits of the example given in this section are hexadecimal. Data segment takes the format
of the command (function code) + data.
37
7.2.3.1 Startup command
01 01
Description: When the AIM-M200 insulation monitoring instrument monitors the insulation faults
in the isolated power system, it will issue a startup command to initiate the AIL150-4/8 fault locator.
After receiving this command, the AIL150-4/8 fault locator begins the insulation fault locating.
7.2.3.2 Fault location results return command
04 01
Description: After the AIL150-4 insulation fault locating is completed, the locating results
are sent to the AIM-M200 medical intelligent insulation monitoring instrument.
Other commands will not be repeated here.
7.3 Instrument CAN communication connection and address settings
As shown in 7.2.1, each set of AIM-M200, ASG150 and AIL150 serve as a subsystem formally, while
in practical application, the CAN communication connection and address settings should be conducted
in the following ways.
1) Connect with shielded twisted pair according to the following figure. Note each of the two
terminals of the CAN bus wire should be added a matched resistance of 120Ω.
2) When setting CAN address, in, it is only needed to set the CAN address of AIM-M200 to any
value between 1 to 110 after the 4 meters are on a unified power, then save the value and the CAN
address of ASG150, AIL150 can be simultaneously set the same with address of AIM-M200. In the
confirmation of saving the AIM-M200 CAN address, note whether the communication lights of ASG150
and AIL150 are flashing several times. If flashing, the address settings are normal, otherwise,
it is needed to check the communication wiring and confirm that the wiring is intact and then reset.
38
8 Typical applications
8.1 Applications of insulation monitoring and fault locating seven pieces of products in ICU/CCU
Note: The grounding bat in the isolated power supply cabinet should be connected reliably with the
equipotential terminals in the field.
9 Powerup and debugging instructions
9.1 Wiring check
For each set of IT system, the wiring check should be conducted before powerup, mainly checking
whether there is wrong, missed or short connection. The examination can be conducted sequentially
in the following order according to the wiring diagrams shown in section 5.4 of this manual:
1) Check if each seven-piece suite forms a separate IT distribution system, and ensure that the
current, resistance, and temperature signal wirings of each insulation monitor are connected to
the same isolation transformer and IT system composed of it.
2) Check whether the L and N input terminals of each set of the HDR-60-24 power supply module are
connected to the 0 and 230V terminals of primary side of the isolated transformer. Whether the +V
and -V of its 24V output terminal is respectively connected with the No.1(24V) and 2(G) terminals
of AIM-M200, No.1(24V) and 2(G) terminals of ASG150, No.1(24V) and 2 (G) terminals of AIL150-4(or-8),
No.24V and G terminals of AID150, and the positive and negative poles are all correctly connected.
3) Check whether the No.8(I0) and 9(I1) terminals of AIM-M200 in each system are reliably connected
to the terminals of the transformer AKH-0.66P26 socketed to the secondary side of the corresponding
39
isolation transformer, and are not grounded. The transformer only passes one of the two lines of
the output terminals of the isolation transformer.
4) Check whether the No.11(T0) and 12 (T1) terminals of AIM-M200 in each system are reliably connected
to the two ST terminals of the isolation transformer.
5) Check whether the No.4 (L1), 5 (L2) terminals of AIM-M200 and No.5 (L1), 7 (L2) terminals of
ASG150 in each of the systems are reliably connected to the two lines of the IT system (that is
the secondary side of the isolation transformer).
6) Check whether the No.13 (FE), 14 (KE) terminals of AIM-M200 in each system are respectively
connected to the on-site equipotential terminals through wires, in the meanwhile the S terminals
of isolation transformer and the No.1 (PE) terminals of ASG150 are reliably connected to the
equipotential terminals.
7) Check whether the No.18 (H), 19 (L) terminals of AIM-M200 meter CAN communication in each system
are respectively connected to the No.8 (H), 9 (L) terminals of ASG150, No.21 (h), 22 (L) terminals
of AIL150-4 (or-8), and the CAH, CAL terminals of AID150 in the way of hand in hand, which are reliable
connections with the positive and negative poles correct.
8) If each isolation transformer has a cooling fan, check whether the cooling fan power supply control
is connected to the No.20, 21 terminals of AIM-M200 in this system.
9) Finally check the two load power lines of each branch in the IT system, and check whether the
two lines pass through the transformer on the AIL-4 (or-8) meter panel by a top-down approach.
9.2 Common faults and eliminations
Make sure the wirings are correct and power on the system. Then check whether each meter is
abnormal, and whether there is a fault alarm in AIM-M200. For common problems, the causes can be
determined and the faults can be eliminated according to the phenomenon of each instrument and the
fault types:
Equipment
name
Fault phenomenon Possible causes and troubleshooting
AIM-M200
insulation
monitoring
Liquid crystal
display：LL
disconnection fault,
No.4 and 5 terminals of AIM-M200 are not reliably
connected to the two lines of the output terminal of the
isolation transformer. Check the wirings and make sure
40
instrument and the insulation
indicator is lit.
they are reliably connected.
Liquid crystal
display：FK
disconnection fault,
and the insulation
indicator is lit.
No.13 and 14 terminals of AIM-M200 are not reliably
connected to the equipotential terminals. Check the
wirings and make sure they are reliably connected.
Liquid crystal
display：TC
disconnection fault,
and the overheat
indicator is lit.
No.11 and 12 terminals of AIM-M200 are not reliably
connected to the two ST terminals of the isolation
transformer. Check the wirings and make sure they are
reliably connected.
Liquid crystal
display: insulation
fault, and the
insulation indicator
is lit.
At least one of the two lines in the IT system at the
secondary side of the isolation transformer has a
grounding fault, after elimination it can be restored to
normal.
The instrument is not
lit.
The 24V power supply of AIM-M200 is not connected well.
Check the wirings of No.1 and 2 terminals and make sure
they are reliably connected.
HDR-60-24
power
supply
module
Powerup indicator is
not lit.
Check whether the wirings of 220V power input are normal
and whether the voltage between the two terminals is
within the allowable input range.
ASG150 test
signal
generator
The instrument is not
lit.
The 24V power supply is not connected well. Check the
wirings of No.1 and 2 terminals and rewire.
Test indicator is
red.
No.5 and 7 terminals are not reliably connected to the
secondary side of the isolation transformer. Rewire until
the indicator turns green after powerup.
AIL150-4/-8
fault
locator
The instrument is not
lit.
The 24V power supply is not connected well. Check the
wirings of No.1 and 2 terminals and rewire.
Unable to locate the
insulation fault
1) The communication line with other instruments in the
system is not connected well. Troubleshoot the
communication line and confirm whether the matching
41
resistors are well connected.
2) The CAN address is not set up properly. Disconnect the
CAN bus of other connected system instruments, and
reset CAN address through its corresponding
insulation monitoring instrument.
3) Instrument problem, which is needed to return to the
factory to be solved.
AID150
centralized
alarm and
display
instrument
The instrument is not
lit.
The 24V power supply is not connected well. Check the
wirings of 24V and G terminals and rewire.
Communication
indicator does not
flash
1) communication parameters are not set properly, check
communication parameters (address, baud rate).
2) The communication line with other instruments in the
system is not connected well. Troubleshoot the
communication line and confirm whether the matching
resistors are well connected.
Note: If the above faults occur, interrupt the power to troubleshoot, and adjust the wirings
until everything is normal.
9.3 Settings and debugging
1) After the system is powered on, set the AIM-M200 load current alarm value according to the capacity
of the isolation transformer. The corresponding relations between alarm current and isolation
transformer capacity are: 45A---10kVA, 35A---8kVA, 28A---6.3kVA, 14A---3.15kVA. After you set up,
follow the process step by step to exit and save the setting parameters. The default alarm current
value of the instrument is 35A, if the matching transformer is 8kVA, then this parameter does not
need to be set.
2) Open the AIM-M200 fault locating function. Enter the AIM-M200 communication settings menu and
set the LOCAT item to YES, then quit and save to start this function.
3) Address settings. To ensure the realization of fault location function, it is necessary to set
the can communication address of aim-m200, and set the can communication address of asg150 and ail150
through this operation. Before setting, make sure that the CAN bus wiring of aim-m200, asg150, ail150
and other products in the same it system is correct, and a 120 Ω matching resistance is added at
the end (the resistance must be added, otherwise communication may not be possible). You can also
connect the ail150 to the head or end of the CAN bus, and turn all its dial switches to the "1"
position). Power on the system, enter the communication setting menu of aim-m200, set the can
42
communication address, press enter to confirm, press self check to return and save. If the
communication indicators of asg150 and ail150 flash during the saving process, the can communication
address of asg150 and ail150 is also set successfully. The number of addresses is recommended to
start at 1.
43
Headquarters: Acrel Co., LTD.
Address: No.253 Yulv Road Jiading District, Shanghai,China
TEL.: 0086-21-69158338 0086-21-69156052 0086-21-59156392 0086-21-69156971
Fax: 0086-21-69158303
Web-site：www.acrel-electric.com
E-Mail: ACREL008@vip.163.com
Postcode: 201801
Manufacturer: Jiangsu Acrel Electric Appliance Manufacturing Co., LTD.
Address: No.5 Dongmeng Road,Dongmeng Industrial Park, Nanzha Street, Jiangyin City,Jiangsu
Province,China
TEL/Fax: 0086-510-86179970
Web-site：www.jsacrel.com
E-Mail: JY-ACREL001@vip.163.com
Postcode: 214405
