YASKAWA SGDA series User Manual

INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6.2.1 Troubleshooting Problems with Alarm Displaycont.
348
Cause Remedy
A Absolute encoder power not supplied from
Servopack.
Use the Servopack power supply for the
absolute encoder.
B Incorrect absolute encoder wiring (PA, PB,
RESET, SEN signal (for speed control),
etc.)
Check and correct the absolute encoder
wiring.
C Absolute encoder malfunctioned
• For speed control (Cn-01 Bit 1 = 0), turn
SEN signal OFF and back ON. (See note)
• For speed control (Cn-01 Bit 1 = 1) or posi-
tion control, turn Servopack power OFF
and back ON.
D Incorrect user constant setting.
Incremental encoder used with Cn-01 Bit E
set to 1.
Set Cn-01 Bit E to 0.
E Absolute encoder defective Replace servomotor.
F Circuit board (1PWB) defective Replace Servopack.
Note Alarm A.00 is reset when the power is turned OFF and back ON. It is not reset by the normal
alarm reset.
NOTE Resetting SEN Signal
When resetting the SEN signal (i.e., turning it OFF and then back ON) for any reason, keep
the SEN signal at the high level for more than 1.3 s before turning it OFF.
SEN signal
OFF
ON = High Level
1.3 s min.
OFF ON
15 ms min.
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.02
User constants
breakdown
OFF OFF OFF OFF
OFF: Output transistor is OFF
ON: Output transistor is ON
Status When Alarm Occurred
At power ON
A
,
B
Cause Remedy
A Power turned OFF during parameter write.
Alarm occurred next power ON.
Replace Servopack.
B Circuit board (1PWB) defective Replace Servopack.
6

YASKAWA SGDA series Specifications

General

Brand	YASKAWA
Model	SGDA series
Category	Servo Drives
Language	English