Yaskawa SGDS Sigma III Servo Amplifier User Manual
Page 299
10 Inspection, Maintenance, and Troubleshooting
10.1.4 Troubleshooting of Alarm and Warning
10-10
A.320
Regenerative
Overload
Occurred when the
control power
supply was turned
ON.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Occurred when the
main circuit power
supply was turned
ON
The power supply voltage is 270 V or more.
Correct the input voltage.
Occurred during
normal operation
(large increase of
regenerative resistor
temperature)
The regenerative energy is excessive.
Select a proper regenerative resistance capacity, or
reconsider the load and operation conditions.
The regenerating state continued.
Occurred during
normal operation
(small increase of
regenerative resistor
temperature)
The setting of parameter Pn600 is smaller than the
external regenerative resistor’s capacity.
Correct the set value of parameter Pn600.
A SERVOPACK fault occurred.
Replace the SERVOPACK.
Occurred at
servomotor
deceleration
The regenerative energy is excessive.
Select a proper regenerative resistance capacity, or
reconsider the load and operation conditions.
A.330
Main Circuit
Wiring Error
Occurred when the
control power
supply was turned
ON.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Occurred when the
main circuit power
supply was turned
ON.
In the DC power input mode, AC power is supplied
through L1 and L2 or L1, L2, and L3.
For AC power input, Pn001.2=0.
For DC power input, Pn001.2=1.
In the AC power input mode, DC power is supplied
through B1/ and terminals.
Pn600 is set to 0 if the regenerative resistance is
disconnected.
Set Pn600 to 0.
A.400
Overvoltage
Occurred when the
control power
supply was turned
ON.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Occurred when the
main circuit power
supply was turned
ON.
The AC power voltage is 290 V or more.
The AC power voltage must be within the
specified range.
A SERVOPACK fault occurred.
Replace the SERVOPACK.
Occurred during
normal operation.
Check the AC power voltage (check if there is no
excessive voltage change.)
The AC power voltage must be within the
specified range.
The motor speed is high and load moment of inertia
is excessive, resulting in insufficient regenerative
capacity.
Check the load moment of inertia and minus load
specifications. Reconsider the load and operation
conditions.
A SERVOPACK fault occurred.
Replace the SERVOPACK.
Occurred at
servomotor
deceleration.
The motor speed is high, and the load moment of
inertia is excessive.
Reconsider the load and operation conditions.
Table 10.3 Alarm Display and Troubleshooting (Cont’d)
Alarm
Display
Alarm Name
Situation at Alarm
Occurrence
Cause
Corrective Actions