19
(3) Check the corresponding wiring of each residual current transformer in the system is connected with I
△
n
at one end and COM terminal at the other end (without positive and negative). Check the wiring of transformer.
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-R100. 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:
Type
Fault
Possible causes and troubleshooting
AIM-R100
residual
current
monitor
LCD display:
disconnection fault, fault
indicator light on
The outgoing line of residual current transformer (or 100Ω
resistance) is not reliably connected to the signal input terminal of
AIM-R100. Check the wiring and ensure the reliable connection.
LCD display: short-
circuit fault, fault
indicator light lights on
If the outgoing line of residual current transformer is short
circuited, check the wiring and ensure its reliable connection.
The meter doesn't work
The 220V power supply of AIM-R100 is not connected well.
Check the wiring of terminals 1 and 2 and ensure its reliable
connection.
ACLP10-
24DC24
power supply
Power on 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.
AID150
centralized
alarm and
display
instrument
The meter doesn't work
The 24V power supply is not connected well. Check the wirings of
24V and G terminals and rewire.
Communication fault
(1) The address setting of AIM-R100 is repeated, or BAUD is not
set to the default 9600.
(2) If the communication line with AIM-R100 in the system is not
well connected, check the communication line and confirm
whether the matching resistance is connected properly.
Note: If the faults occur, interrupt the power to troubleshoot, and adjust the wirings until everything is ok.
9.3 Settings and debugging
(1) When entering the menu settings, products need to input the password. The initial password of all
products is 0001.
(2) After the system is powered on normally, the default alarm current threshold is 10mA. If it needs to be
adjusted, please refer to chapter 6.4 to change the parameter operation.
(3) Communication address setting. In order to realize the centralized monitoring function of multiple sets of
residual current monitors through centralized alarm and display AID150, it is necessary to set the communication
address of AIM-R100 of each residual current monitor in turn, and then connect the communication lines between
