Troubleshooting Of Alarm And Warning - YASKAWA E-II Series User Manual

10.1.5 Troubleshooting of Alarm and Warning

When an error occurs in servodrive, an alarm display such as A.
A.9 appears on the panel operator. However, the display "A.--" is not an alarm. Refer to the following sec-
tions to identify the cause of an alarm and the action to be taken.
Contact your Yaskawa representative if the problem cannot be solved by the described corrective action.
(1) Alarm Display and Troubleshooting
Alarm Situation at Alarm
Alarm Name
Display
A.02
Parameter Occurred when the
Breakdown control power sup-
ply was turned ON.
(The EEPROM
data storing the
parameter is
incorrect.)
A.03 Main Circuit
Occurred when the
Encoder Error control power sup-
ply was turned ON
or during operation
A.04
Parameter Occurred when the
Setting Error control power sup-
ply was turned ON.
(The parameter
setting was out
of the allowable
setting range.)
A.05
Combination Occurred when the
control power sup-
Error
ply was turned ON.
(The SERVO-
PACK and ser-
vomotor
capacities do not
correspond.)
A.09
Dividing Ratio Occurred when the
control power sup-
Setting Error
ply was turned ON.
A.0A
Encoder Model Occurred when the
Unmatched control power sup-
ply was turned ON.
A.10
Overcurrent Occurred when the
(An overcurrent control power sup-
ply was turned ON.
flowed through
the IGBT) or
Heat Sink
Overheated
Occurred when the
main circuit power
supply was turned
ON or while the ser-
vomotor was run-
ning.
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Table 10.5 Alarm Display and Troubleshooting
Occurrence
The power supply was turned OFF while changing
the parameter setting.
The power supply was turned OFF while an alarm
was being written.
The number of times that parameters were written
exceeded the limit. For example, the parameter was
changed every scan through the host controller.
The SERVOPACK EEPROM and the related circuit
are faulty.
A SERVOPACK fault occurred.
The incorrect parameter was being loaded. (The
incorrect value was rejected as an error at the digital
operator.)
The SERVOPACK EEPROM and the related circuit
are faulty.
The SERVOPACK and servomotor capacities do not
correspond to each other.
Servomotor capacity / SERVOPACK capacity ≤ 1/4
or servomotor capacity / SERVOPACK capacity ≥ 4
The parameter that is written in the encoder is incor-
rect.
A SERVOPACK fault occurred.
At Pn207.2 = 1, the setting of dividing ratio (Pn212)
is not acceptable (out of fixed increments), or
exceeds the value for the connected encoder resolu-
tion.
The SERVOPACK EEPROM and the related circuit
are faulty.
The connected serial encoder is not supported by Σ-
II series servo drives.
A SERVOPACK fault occurred.
The overload alarm has been reset by turning OFF
the power too many times.
The connection is faulty between the SERVOPACK
board and the thermostat switch.
The SERVOPACK fault occurred.
The connection between grounding and U, V, or W
is incorrect.
The grounding line has contact with other terminals.
A short circuit occurred between the grounding and
U, V, or W of the servomotor cable.
A short circuit occurred between phases U, V, and W
of the servomotor.
A short circuit occurred between the grounding and
U, V, or W of the SERVOPACK.
A SERVOPACK fault occurred (current feedback
circuit, power transistor or board fault).
and CPF
Cause
Set Fn005 to initialize the parameter and input the
parameter again.
Replace the SERVOPACK.
(Recheck the parameter writing method.)
Replace the SERVOPACK.
Replace the SERVOPACK.
Set Fn005 to initialize the parameter.
Replace the SERVOPACK.
Select the proper combination of SERVOPACK
and servomotor capacities.
Replace the servomotor.
Replace the SERVOPACK.
Correct the setting of Pn212, and turn OFF the
control power and turn it ON again.
Replace the SERVOPACK.
Replace the servomotor with Σ-II series SERVO-
PACK supported model.
Replace the SERVOPACK.
Change the method to reset the alarm.
Replace the SERVOPACK.
Check and then correct the wiring.
Repair or replace the servomotor main circuit
cable.
Replace the SERVOPACK.
10.1 Troubleshooting
or warning display such as
Corrective Actions
10
10-7