MOTOMAN C-1 MH-Series Positioner Manual with MotoMount
APPENDIX C
ALARM CODES
Use Table C-1 to identify NS600 controller alarms. Once the alarm is identified,
refer to the following manuals to resolve it:
• Sigma II User’s Manual - Motoman P/N 147237-1
• Sigma II Indexer User’s Manual - Motoman P/N 147238-1
Table C-1 Alarm Identification
Panel
Display
Alarm Detail
A.xx SGDH Alarm Activation Alarm
A.02 Parameter Breakdown - EEPROM data of servo amplifier is abnormal.
A.03 Main Circuit Encoder Error - Detection data for power circuit is abnormal.
A.04 Parameter Setting Error - The parameter setting is outside the allowable setting range.
A.05 Servomotor and Amplifier combination error - Servo amplifier and servomotor capacities
do not match each other.
A.08 Linear scale pitch setting error.
A.10 Overcurrent or Heat Sink Overheated - An overcurrent flowed through the IGBT. Heat sink
of servo amplifier was overheated.
A.30 Regneration Error Detected - Regenerative circuit or resistor is faulty.
A.32 Regenerative Overload - Regenerative energy exceeds regenerative resistor capacity.
A.33 Wrong input power. Verify Pn001.2 parameter setting (AC or DC)
A.40 Overvoltage - Main circuit DC voltage is excessively high.
A.41 Undervoltage - Main circuit DC voltage is excessively low.
A.51 Overspeed - Rotational speed of the motor is excessively high.
A.71 Overload: High Load - The motor was operating for several seconds to several tens of sec-
onds under a torque largely exceeding ratings.
A.72 Overload: Low Load - The motor was operating continuously under a torque largely
exceeding ratings.
A.73 “Dynamic Brake Overload - When the dynamic brake was applied, rotational energy
exceeded the capacity of dynamic brake resistor.”
A.74 “Overload of Surge Current Limit Resistor - The main circuit power was frequently turned
ON and OFF. (If 10 or more counted in 2 minutes, this error occurs.)”
A.76 Pre-charge contactor failure. Pre-charge contactor failed to close when SVON signal
applied. (22-55kW amplifiers only.)
A.7A Heat Sink Overheated - The heat sink of the servo amplifier overheated.
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