Mitsubishi Electric Q172CPU Programming Manual page 264

APPENDICES
Table 2.2 Drive module error (100 to 1199) list (Continued)
Control mode of virtual servo axis
Error Error
class code
1151
Major
error
1152
1153
Error cause
• Q172EX or encoder hardware error.
• Disconnected encoder cable
• A synchronous encoder set in the
system setting differs from a
synchronous encoder actually
connected.
• Q170ENC is connected to
Q172EX/Q172EX-S1.
• Operating system software
incompatible with the synchronous
encoder Q170ENC is installed to
the Motion CPU.
• Low voltage at Q172EX.
• No battery or disconnected battery
at Q172EX.
APP - 19
Error
Corrective action
processing
• Check (replace) the Q172EX or
Immediate
encoder.
input stop
• Check the encoder cable
• Set a synchronous encoder
actually connected in the
system setting.
Input from
synchro-
• Use Q172EX-S2, Q172EX-S3
nous
to connect Q170ENC.
encoder
does not
accept.
• Change the operating system
software compatible with the
synchronous encoder
Q170ENC.
Operation • Replace the battery.
is
• Replace the battery or check
continued.
(replace) the Q172EX.