AIM-M10 Medical Insulation Monitor


● Load and temperature monitoring of isolation transformer


● LED indicators: On, Insulation, Overload, Overtemp


● Alarm relay output


● Test button


● RS485 (MODBUS-RTU) 

  • Description

Technical parameter

AUX Power

Voltage

AC220V±10%

Temperature monitoring

Thermal resistor

2 Pt100

Power consumption

5VA

Measuring range

-50~+200℃

Insulation monitoring

Resistance measuring range

10~999kΩ

Alarm value range

0~+200℃

Response value

50~999kΩ

Alarm

output

Output mode

1 Relays

Relative uncertainty

±10%

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

≥200

Altitude

≤2500m

Internal DC resistance Ri

≥240

IP degree

IP30

Permissible extraneous DC voltage Ufg

≤DC280V

Rated impulse voltage / pollution degree

4KV/Ⅲ

Load current monitoring

Measuring Value

2.1~50A

EMC

IEC 61326-2-4

Alarm Value

5~50A

Communication

RS485Modbus-RTU)

Measuring accuracy

±5%


Dimension

  • Front view
  • Side view

Application

Typical Solution

Wiring and Installation

1,2(FE,KE): Functional earthing
3,4(A,B): RS485 communication port
5,6(+24V,0V): DC power supply output
7,8(J1,J2): Relay output
11,12(L1,L2): IT system connector
15,16(I0,I1): Load current connector
17,18(T0,T1): Temperature sensor connector
The installation size of AKH-0.66P26 is shown in the following figure:

Operation and Display

LED indicator instructions

Indicator light

Instructions

On

When the device is in normal operation, the indicator flashes, and the flickering frequency is about once a second.

Insulation

When the insulation resistance exceeds the alarm setting value, or when FK is disconnected, the indicator flashes to alarm.

Overload

When the system load current exceeds the alarm setting value, the indicator flashes to alarm

Overtemp

When the transformer temperature exceeds the alarm setting value or the temperature sensor wiring is disconnected, the indicator flashes to alarm.


Data settings

First menu

Second menu

Range and description

SET BUS

Addr

1-247

Baud

4800,9600,19200

SET

Temp

0-200

Ie

14,18,22,28,35,45

Ran

50-999

SET TIME

Year-month-day  hour: minute

SET Code

0000-9999

SET Clr

Clear the SOE

VER

Firmware version information

Common problems

Make sure the connection is correct before the system is powered on. For common problems, according to the fault phenomena in the table below, targeted investigation can be carried out.

Fault phenomenon

Possible causes and troubleshooting

LCD display: FK break, Insulation indicator lighting

Terminal 1 and terminal 2 of AIM-M10 are not reliably connected to LEB. Check the connection and make sure it is reliable.

LCD display: TC break, Overtemp indicator lighting.

The terminals 17 and 18 of AIM-M10 are not reliably connected to the two ST terminals of the isolation transformer. Check the connection and make sure it is correct.

LCD display: insulation fault, Insulation indicator lighting

At least one of the L1 and L2 wires in IT system has grounding fault, which can be restored to normal after removal.

The device can't light up.

The working power supply of AIM-M10 is not connected properly. Check the connection of terminals 11 and 12 and make sure it is correct.

Note: All the above faults should be checked by power off, and the wiring should be adjusted until everything is normal.

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