Sanyo Denki SANMOTION 3E S, Instruction Manual, Page: 296 / 488

8. Maintenance
8-25
[Use of EN2 with motor encoder in the semi-closed system]
Status at the time of alarm
Cause
1 2 3 4
Issued when control power is turned ON.
✔ ✔ ✔ ✔
Issued during operation. ✔ ✔ ✔
 Corrective actions
Cause Investigation and corrective actions
1
■ For
motor encoder wiring:

Improper wiring.
 Connector is removed.
 Loose connection.
 Encoder cable is too long.

Encoder cable is too thin.
■
Check the wiring conditions and correct it
if improper.
■
Confirm that the encoder power supply
voltage at the motor side is above 4.75 V,
correct it if improper.
2
■
Servo amplifier and motor encoder are
not combined properly.
■
Replace with servo motor equipped with
proper encoder.
3
■
Defect in internal circuit of servo
amplifier.
■
Replace the servo amplifier.
4
■ Defect in internal circuit of motor
encoder.
■ Replace the servo motor.
[Use of EN2 with external encoder]
Status at the time of alarm
Cause
1 2 3 4
Issued when control power is turned ON.
✔ ✔ ✔ ✔
Issued during operation. ✔ ✔ ✔
 Corrective actions
Cause Investigation and corrective actions
1
■
For external encoder wiring,
 Improper wiring.
 Connector is removed.
 Loose connection.
 Encoder cable is too long.
 Encoder cable is too thin.
■
Check the wiring conditions and correct it
if improper.
■
Confirm that the power supply voltage for
the external encoder is above 4.75 V,
and correct it if improper.
2
■ Turn-on timing of external encoder power
is delayed.
■
Confirm that the power supply voltage for
the external encoder soon after turning
on control power, and bring forward the
timing of turning on the power for
external encoder if it is not established.
3
■ Defect in internal circuit of servo
amplifier.
■
Replace the servo amplifier.
4
■
Defect in internal circuit of motor
encoder.
■
Replace the servo motor.