YASKAWA SGD7S-1R9D Product Manual page 518

15.2 Alarm Displays
15.2.2 Troubleshooting Alarms
Alarm Code:
Alarm Name
F50 hex:
Servomotor Main
Circuit Cable Dis-
connection
(The Servomotor
did not operate or
power was not
supplied to the
Servomotor even
though the Servo
ON command
(Enable Operation
command) was
input when the
Servomotor was
ready to receive
it.)
*3
FL-1 :
System Alarm
*3
FL-2 :
System Alarm
*3
FL-3 :
System Alarm
*3
FL-4 :
System Alarm
*3
FL-5 :
System Alarm
CPF00:
Digital Operator
Communications
Error 1
CPF01:
Digital Operator
Communications
Error 2
*1.
Detection Conditions
• Rotary Servomotor
If either of the following conditions is detected, an alarm will occur.
Pn533 [min
Maximum motor speed [min
• Linear Servomotor
If either of the following conditions is detected, an alarm will occur.
*2.
Refer to the catalog for details.
*3.
These alarms are not stored in the alarm history. They are only displayed on the panel display.
15-38
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.
Encoder resolution
]  1
-1
6 10
5
Encoder resolution
] 
-1
Approx. 3.66  10
Pn585 [mm/s]

Linear encoder pitch [m]
Pn385 [100 mm/s]

Linear encoder pitch [m]
Confirmation
–
Check the wiring.
–
Check the connector
contact.
–
–
–
1
12
Resolution of Serial Converter Unit
10
Resolution of Serial Converter Unit
Approx. 6.10 10
5
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.
1
1
Reference
–
page 4-19
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