Sanyo Denki SANMOTION 3E S, Instruction Manual, Page: 305 / 488

8.3 Trouble shooting when alarm activated
8-34
8
Maintenance
■
Alarm Code C1 (Over-speed)
 Motor rotation speed reaches 120 % of the highest speed limit
Status at the time of alarm
Cause
1 2 3 4 5
Issued when command is entered after
Servo ON.
✔ ✔
Issued when the servo motor is started. ✔ ✔ ✔
Issued other than operating and starting
the motor.
✔ ✔
 Corrective actions
Cause Investigation and corrective actions
1
■ Defect in internal circuit of servo
amplifier.
■
Replace the servo amplifier.
2
■
Defect in internal circuit of motor
encoder.
■
Replace the servo motor.
3
■
Excessive
overshoot
while starting.
■
Adjust the servo parameters.
■ Loose the slope of acceleration /
deceleration command.
■ Reduce the load inertia moment, or
change motor capacity.
4
■
Wiring of U/V/W
–
phase between servo
amplifier and motor is wrong.
■
Check the wiring conditions and correct it
if improper.
5
■
Wiring of A and B phase of incremental
encoder is wrong.
■
Check the wiring conditions and correct it
if improper.
■
Alarm Code C2 (Velocity Control Error)

Torque command and acceleration direction are not matching
Status at the time of alarm
Cause
1 2 3 4
Issued while due to input of Servo ON. ✔ ✔
Issued when command has entered.
✔ ✔ ✔
Issued while starting and stopping the
servo motor.
✔
 Corrective actions
Cause Investigation and corrective actions
1
■
Wiring of U/V/W
–
phase between servo
amplifier and motor is wrong.
■
Check the wiring conditions and correct it
if improper.
2
■ Wiring of A and B phase of incremental
encoder is wrong.
■ Check the wiring conditions and correct it
if improper.
3
■
The servo motor is vibrating (oscillating).
■
Adjust the servo parameters so that
servo motor will not vibrate (oscillate).
4
■ Excessive overshoot and undershoot.
■
Adjust the servo parameters to reduce
overshoot and undershoot.
■
Loose the slope of acceleration /
deceleration command.
■
Change the Index 0x20FF-2 "Velocity
Control Alarm (ALM_C2) Detection
[VCALM]" to "0x00: Disabled".
* Velocity control error alarm is set to "00:Disabled" as default because the alarm may be detected
if it is available in case of accel/decel with large load inertia or vertical application. If its detection
is needed, consult our representatives.