YASKAWA SGDA series User Manual

INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Displaycont.
350
Cause Remedy
A Wiring grounded between Servopack and
servomotor.
Check and correct wiring.
B Servopack ambient temperature exceeds
55°C
Bring Servopack ambient temperature to
55°C
Note Alarm cannot be reset while power
transistor module temperature ex-
ceeds 90°C.
C Servomotor U, V, or W phase grounded. Replace servomotor.
D
• Circuit board (1PWB) defective
• Power transistor defective
Replace Servopack.
E Current feedback circuit, power transistor,
DB relay, or circuit board defective.
Replace Servopack.
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.31
Position error
pulse overflow
(position control
only)
ON ON OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
Status When Alarm Occurred
A
During servomotor
operation
Overflow during
high-speed opera-
tion
No feedback pulse
returned after refer-
ence pulse input.
Normal operation
but overflow when
large reference in-
put.
At power ON
B
,
F
C
,
D
,
E
F
6

YASKAWA SGDA series Specifications

General

Brand	YASKAWA
Model	SGDA series
Category	Servo Drives
Language	English