YASKAWA SGD7S-***A20****F62 Series Product Manual page 110

5.3 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.F50:
Servomotor Main
Circuit Cable Dis-
connection
(The Servomotor
did not operate or
power was not
supplied to the
Servomotor even
though the
SV_ON (Servo
ON) command
was input when
the Servomotor
was ready to
receive it.)
*5
FL-1 :
System Alarm
*5
FL-2 :
System Alarm
*5
FL-3 :
System Alarm
*5
FL-4 :
System Alarm
*5
FL-5 :
System Alarm
*5
FL-6 :
System Alarm
CPF00:
Digital Operator
Communications
Error 1
CPF01:
Digital Operator
Communications
Error 2
*1.
Refer to the following manual for details.
*2.
Detection Conditions
• Rotary Servomotor
If either of the following conditions is detected, an alarm will occur.
Pn533 [min
Maximum motor speed [min
5-36
Possible Cause
A failure occurred in
the SERVOPACK.
The wiring is not cor-
rect or there is a faulty
contact in the motor
wiring.
A failure occurred in
the SERVOPACK.
There is a faulty con-
tact between the Digi-
tal Operator and the
SERVOPACK.
A malfunction was
caused by noise.
A failure occurred in
the Digital Operator.
A failure occurred in
the SERVOPACK.
Σ-7-Series Σ-7S SERVOPACK with MECHATROLINK-III Communications References Product Manual
(Manual No.: SIEP S800001 28)
Encoder resolution
] 
-1
6 10
5
Encoder resolution
] 
-1
Approx. 3.66  10
Confirmation
–
Check the wiring.
–
Check the connector con-
tact.
–
–
–
Pn20E

Pn210
Pn20E

12 Pn210
Continued from previous page.
Correction
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Make sure that the Servo-
motor is correctly wired.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Disconnect the connec-
tor and insert it again. Or,
replace the cable.
Keep the Digital Operator
or the cable away from
sources of noise.
Disconnect the Digital
Operator and then con-
nect it again. If an alarm
still occurs, the Digital
Operator may be faulty.
Replace the Digital Oper-
ator.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
Refer-
ence
–
*1
–
–
–
–
–