ALARM CODES
MH-Series Positioner Manual with MotoMount
C-2
MOTO
MAN
A.81
Absolute Encoder Backup Error - All the power supplies for the absolute encoder have
failed and position data was cleared.
A.82
Encoder Checksum Error - The checksum results of encoder memory is abnormal.
A.83
Absolute Encoder Battery Error - Battery voltage for the absolute encoder has dropped.
A.84
Absolute Encoder Data Error - Received absolute data is abnormal.
A.85
Absolute Encoder Overspeed - The encoder was rotating at high speed when the power
was turned ON.
A.86
Encoder Overheat - The internal temperature of the encoder is too high.
A.91
“Overload - Warning that occurs before alarms A.71 and A.72. If the warning is ignored
and operation continues, a regenerative overload alarm may result.”
A.92
“Regnerative Overload - Warning that occurs before alarm A.32. If the warning is ignored
and operation continues, an overload alarm may result.”
A.93
“Low Battery - Low battery alarm, can only occur with absolute encoders.”
A.94
Data set up warning. Invalid or out of range data.
A.95
Invalid command warning. Wrong command issued for current control state.
A.9F
NS600 alarm. See Sigma II Indexer User’s Manual for further details.
A.b1
Reference Speed Input Read Error - The A/D converter for reference speed input is faulty.
A.b2
Reference Torque Input Read Error - The A/D converter for reference torque input is faulty.
A.bF
System Alarm - A system error occurred in the servo amplifier.
A.C1
Servo Overrun Detected - The servomotor ran out of control.
A.C2
Encoder output phase error. Applicable to linear scale only.
A.C5
Linear motor pole sensor position detection error.
A.C8
Absolute Encoder Clear Error and Multi-Turn Limit Setting Error - The multi-turn for the
absolute encoder was not property cleared or set.
A.C9
Encoder Communications Error - Communications between servo amplifier and encoder
is not possible.
A.CA
Encoder Parameter Error - Encoder parameters are faulty.
A.Cb
Encoder Echoback Error - Contents of communications with the encoder is incorrect.
A.CC
Multi-Turn Limit Disagreement - Different multi-turn limits have been set in the encoder
and servo amplifier.
A.d0
Position Error Pulse Overflow - Position error pulse exceeded parameter (Pn505).
A.d1
Full-Closed loop (FC100): PC encoder and motor encoder pulses discrepancy too large.
Check Pn206.
A.EA
Amplifier does not respond at power on or after reset.
Table C-1 Alarm Identification
Panel
Display
Alarm Detail