Device Setting Illegal; Contactor Operation Abnormal - Mitsubishi Electric M800 Series Manual

M800/M80/E80/C80 Series Alarm/Parameter Manual
4 MCP Alarms (Y)
Y20

Device setting illegal

[M8]
Details
The device set in the parameter "#1353 MC_ct1" (Contactor shutoff output 1 device) does not exist.
The device set in the parameter "#1353 MC_ct1" (Contactor shutoff output 1 device) is used as an output
device in PLC program.
Remedy
In the parameter "#1353 MC_ct1" (Contactor shutoff output 1 device), set the device to which a remote I/
O is connected. Use the device to control the contactor.
Confirm that the devices set by the parameter "#1353 MC_ct1" (Contactor shutoff output 1 device)" are
not used as an output device in PLC program.
Restart the NC.
[C80]
Details
Setting of the contactor shutoff output device parameter is incorrect.
The alarm indicates the parameter of the incorrect setting with the bit.
bit0: #1353 MC_ct1
Remedy
Check the setting of the contactor shutoff output device parameter.
Y20

Contactor operation abnormal

[M8]
Details
Contactor's operation is not following the NC's commands.
Displays the No. of the abnormal contactor for the contactor information.
Remedy
Check and correct "#1353 MC_ct1" (Contactor shutoff output 1 device) setting.
Check the wiring for contactor shutoff.
Check for contactor's welding.
Restart the NC.
[C80]
Details
Contactor does not operate as commanded by the NC.
The alarm indicates the parameter to which the weld detection device of the error contactor is assigned with
the bit.
bit0: #1330 MC_dp1
bit1: #1331 MC_dp2
bit2: #1339 MC_dp3
bit3: #1340 MC_dp4
Remedy
Check the settings of the following parameters.
#1330 MC_dp1
#1331 MC_dp2
#1339 MC_dp3
#1340 MC_dp4
#1353 MC_ct1
#1357 mchkt1
Check the wiring for contactor shutoff.
Check for contactor's welding.
0011
0012
75
Contactor info
Contactor info
IB-1501279-H