Sfty Obsrvation: Fb Speed Err; Door Signal: Input Mismatch; No Speed Observation Mode In Door Open; Speed Obsv: Para Incompatible - Mitsubishi Electric M800 Series Manual

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

Sfty obsrvation: FB speed err

Details
Actual rotation speed of the motor is exceeding the speed that has been set with speed monitoring parameter
during the speed monitoring mode.
The name of the axis with an error is displayed.
Remedy
Correct the speed observation parameter and the sequence program.
Restart the NC.
Y20

Door signal: Input mismatch

Details
Door state signals on the NC side and the drive side do not match. It may be caused by the followings:
Cable disconnection
Damaged door switch
Damaged NC or servo drive unit
Remedy
Check the cable.
Check the door switch.
Restart the NC.
Y20

No speed observation mode in door open

Details
The door open state was detected when the speed monitoring mode was invalid.
The causes may be same as the ones for 0005 (Door signal: Input mismatch). Also the sequence program may
not be correct.
Remedy
Correct the sequence program.
Restart the NC.
Y20

Speed obsv: Para incompatible

Details
Two speed monitoring parameters are not matched at the rising edge of the "speed monitor mode" signal.
The name of the axis with an error is displayed.
Remedy
Correct the relevant parameters so that the two speed monitoring parameters match.
Restart the NC.
0004
0005
0006
0007
73
(Axis name)
Door No.
Door No.
(Axis name)
IB-1501279-H