Sto Function Operation Illegal; Sto Function Illegal At Pwr On; Dual Signal: Parameter Setting Error; Safety Observation: Parameter Memory Error - Mitsubishi Electric M800 Series Manual

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

STO function operation illegal

Details
The drive unit's STO function has failed to work properly.
Remedy
If this alarm has occurred alone, a drive unit failure can be suspected.
If other alarms have been generated at the same time, it is also possible that there is communication problem.
Check the optical cable wiring.
Y20

STO function illegal at pwr ON

Details
The motor power has not been shut down with the STO function when the NC power was turned ON.
Remedy
If this alarm has occurred alone, a drive unit failure can be suspected.
If other alarms have been generated at the same time, it is also possible that there is communication problem.
Check the optical cable wiring.
Y20

Dual signal: parameter setting error

Details
A setting of #2118 SscDrSel, #3071 SscDrSelSp, #2180 S_DIN, or #3140 S_DINSp is not correct.
Remedy
- Correct the parameter setting.
Y20

Safety observation: parameter memory error

Details
The following parameters are not consistent with the check data.
#2180 S_DIN, #3140 S_DINSp
Remedy
Correct the parameter setting.
Restore the backup data, as the parameter or check data may be corrupted.
Y21 Speed obsv signal: Speed over
Details
The speed exceeds the safety speed limit when the "speed monitor mode" signal is ON.
The name of the axis with an error is displayed.
Remedy
Decelerate the speed to reset the warning and start the speed monitor.
Y40 Machine group-based stop
Details
A machine group-based alarm stop has occurred, or the machine group-based PLC interlock signal has been
input.
Remedy
Remove the cause of the stop by alarm.Turn OFF the machine group-based PLC interlock signal.
Y51 Parameter G0tL illegal
Details
The time constant has not been set or exceeded the setting range.
Remedy
Correct "#2004 G0tL (G0 time constant (linear))".
Y51 Parameter G1tL illegal
Details
The time constant has not been set or exceeded the setting range.
Remedy
Correct "#2007 G1tL (G1 time constant (linear))".
IB-1501279-H
0013
0014
0027
0031
0001
0001
0002
76
(Parameter No.)
(Axis name)