Mitsubishi Electric Q173DSCPU Programming Manual page 251

APPENDICES
Control mode
Command generation axis
Error
code
901
(7) System errors (900 to 999)
These are errors detected at the power-on.
The error codes, causes, processing and corrective actions are shown in Table
1.9.
Table 1.9 System error (900 to 999) list
• The motor travel value while the
power is off exceeded the
"System setting mode-allowable
travel value during power off" set
in the system settings at the
turning on of the servo amplifier.
Error cause
processing
Further
operation is
possible.
APP - 22
Error
Corrective action
• Check the position.
• Check the battery of servo
amplifier.