YASKAWA SGDA series User Manual

INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Displaycont.
364
Display and Outputs
Digital Operator
Di l
d
Alarm Output
g
p
Display and
Alarm
Name
Alarm Code Output
Alarm Output
Al
arm
N
ame
ALO1 ALO2 ALO3
p
A.F3
Power loss error
OFF ON OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
Status When Alarm Occurred
A
At power ON
During servomotor
operation
B
Cause Remedy
A Time between turning power OFF and back
ON was shorter than the power holding
time.
After turning power OFF, wait more than
the power holding time (6 to 15 s,
according to type) before turning the power
back ON.
B If any of the following power supply
conditions are met during motor operation:
• Complete power failure : half cycle of sup-
ply frequency
• Voltage drop: full cycle of supply frequency
Note Because of detector lag and detector
margin, power loss of 30 to 55 ms
does not cause an alarm.
Check the power supply.
Terms
• Complete power failure=Power failure
where voltage drops to zero.
• Voltage drop=Power failure where voltage
drops, but not to zero.
Display and Outputs
Digital Operator
Di l
d
Alarm Output
g
p
Display and
Alarm
Name
Alarm Code Output
Alarm Output
Al
arm
N
ame
ALO1 ALO2 ALO3
p
CPF00
Digital operator
transmission
error 1
Not specified
Note This alarm is not stored in alarm trace-back function memory.
Status When Alarm Occurred
A
,
B
,
C
,
D
At power ON. Digital op-
erator connected before
Servopack power turned
ON.
Digital operator con-
nected to Servopack
while power turned ON.
A
,
B
,
C
,
D
Cause Remedy
A Cable defective or poor contact between
digital operator and Servopack.
• Check connector connections.
• Replace cable.
B Malfunction due to external noise Separate digital operator and cable from
noise source.
C Digital operator defective Replace digital operator.
D Servopack defective Replace Servopack.
6

YASKAWA SGDA series Specifications

General

Brand	YASKAWA
Model	SGDA series
Category	Servo Drives
Language	English