Yaskawa FSP Amplifier - Manual (Page 304)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
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9.2.3. Alarm Display Table
A summary of alarm displays and alarm code outputs is given in the
following table.
Alarm Code Output Alarm
Display ALO1 ALO2 ALO3
ALM
Output
Alarm Name Description
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
OFF OFF OFF OFF
Servomotor and
Amplifier
Combination Error Servo amplifier and servomotor
capacities do no match each
other.
A.10** ON OFF OFF OFF
Overcurrent or Heat
Sink Overheated**
An overcurrent flowed through
the IGBT.
Heat sink of servo amplifier was
overheated.
A.30
Regeneration Error
Detected •Regenerative circuit is faulty
•Regenerative resistor is faulty.
A.32
ON ON OFF OFF
Regenerative Overload
Regenerative energy exceeds
regenerative resistor capacity.
A.40 Overvoltage
Main circuit DC voltage is
excessively high.
A.41
OFF OFF ON OFF
Undervoltage
Main circuit DC voltage is
excessively low.
A.51 ON OFF ON OFF 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 seconds 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.
A.7A**
ON ON ON OFF
Heat Sink
Overheated** The heat sink of servo amplifier
overheated.
* These alarms are not reset by the alarm reset signal (/ALM-RST). Eliminate the cause of the alarm and
then turn OFF the power supply to reset the alarms.
** This alarm display appears only within the range of 30 W to 1 kW.
Note:
OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.