YASKAWA SGDS Sigma III Series User Manual page 301

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