Servopack - YASKAWA SGM Series User Manual

12.2.2 SERVOPACK

J Troubleshooting Using MECHATROLINK Communication Data
Alarm Code
(Alarm/Warning History)
"10"
Overcurrent
"40"
Overvoltage Overvoltage
"51"
Overspeed
"D0"
Overflow
"71"
Instantaneous overload
Table 12.6 shows examples of troubleshooting problems with MECHATROLINK commu-
nications data (alarm code).
Table 12.6 Troubleshooting with MECHATROLINK Communications Data
Status When Lit
Lit at power ON
Lit at power ON and servo ON Current feedback circuit or power
Lit during driving
Lit at power ON after turning
the power OFF
SERVOPACK operates when it
is reset after a while.
Lit with normal running or de-
celeration
Lit with high-speed Servomo-
tor rotation after reference in-
put
No feedback pulse after mov-
ing reference input
Overflow during high-speed
running
Normal running by overflow
with large move reference in- g
put t
Lit during driving
Operation resumes after turn-
ing power OFF and ON.
Cause
Circuit board (1PWB) defective
transistor defective.
Dynamic brake circuit.
Ambient temperature exceeds 55 _C. Reduce the ambient tempera-
2
GD load too large.
Circuit board (1PWB) defective.
Servomotor wiring incorrect.
Encoder wiring incorrect.
S Servomotor wiring incorrect
S Encoder wiring incorrect
Control board (1PWB) defective
S Servomotor wiring incorrect
S Encoder wiring incorrect
Control board (1PWB) defective
SERVOPACK adjustment incorrect
Load capacity too large
Feed speed too large
Load greatly exceeds the rated torque
from several seconds to tens seconds.
12 -5
12.2 Troubleshooting
Remedy
Replace SERVOPACK.
Replace SERVOPACK.
ture to below 55 _C.
Check the load moment of in-
ertia on the motor shaft.
Replace SERVOPACK.
S Check and correct Servo-
motor wiring.
S Check to see if the Phase-A,
-B and -C pulses are correct p
at 2CN, and repair (discon-
nection, short, no power
supply, defective circuit
board.) if necessary.
Replace SERVOPACK.
S Check and correct Servo-
motor wiring.
S Check to see if the Phase-A,
-B and -C pulses are correct
at 2CN, and repair (discon-
nection, short, no power
supply, defective circuit
board.) if necessary.
Replace SERVOPACK.
Increase speed loop gain
(Cn-0004).
Review the load. (overload or
load moment of inertia)
Decrease the feed speed.
Review the load. (overload)
12