Mitsubishi Electric Q Series Programming Manual page 477

APPENDICES
Table 1.11 Absolute position system error (1200 to 1299) list
Control mode
Error
code
1201
1202
1203
1204
(3) Absolute position system errors (1200 to 1299)
These errors are detected at the absolute positioning system.
The error codes, causes, processing and corrective actions are shown in Table
1.11.
• A sum check error occurred with the backup data
in the controller at the turning on servo amplifier
power supply.
• Home position return was not performed.
• CPU module battery error.
• Home position return started but did not complete
normally.
• A communication error between the servo
amplifier and encoder occurred at the turning on
servo amplifier power supply.
• The amount of change in encoder current value is
excessive during operation.
A continual check is performed (both of servo ON
and OFF states) after the servo amplifier power
has been turned ON.
• The following expression holds: "Encoder current
value [PLS] feedback current value [PLS]
(encoder effective bit number)" during operation.
A continual check is performed (both of servo ON
and OFF states) after the servo amplifier power
has been turned on.
Error cause
APP - 22
Error
Corrective action
processing
• Check the battery and execute
a home position return.
Home
position
return
request ON
Home • Check the motor and encoder
position cables and execute a home
return position return again.
request
ON, servo
error [2016]
set.
• Check the motor and encoder
cables.
Home
position
return
request ON