Sanyo Denki SANMOTION 3E S, Instruction Manual, Page: 285 / 488

8.3 Trouble shooting when alarm activated
8-14
8
Maintenance
■
Alarm code 41 (Overload 1)
 Excessive effective torque
Status at the time of alarm
Cause
1 2 3 4 5 6 7 8 9
Issued at input of servo ON. ✔ ✔ ✔
After command input, issued without rotating the
motor.
✔ ✔ ✔ ✔ ✔
After command input, brief motor rotation
✔ ✔ ✔ ✔ ✔
 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
■
Effective torque exceeds the rated
torque.
■ Monitor the load status using the Index
0x2108 Effective torque monitor [TRMS],
and check if effective torque exceeds the
rated value. Or, calculate the motor
effective torque from load conditions and
operation conditions. If the effective
torque is excessive, check the operation
or load condition, or replace to the
capacity of the large motor.
4
■ Defect in servo motor and servo amplifier
combination.
■
Check if the motor in use matches with
the recommended type, and replace if it
is improper.
5
■ Holding brake of servo motor has not
released.
■
Check that the wiring and voltage of the
holding brake are correct; if not, correct
it. If the above are OK, replace the servo
motor.
6
■
Wiring of U/V/W
–
phase between servo
amplifier and motor is wrong.
■ Check the wiring conditions and correct it
if improper.
7
■ One or all connections of U/V/W -phase
wiring of servo amplifier / motor is
disconnected.
■ Check the wiring conditions and correct it
if improper.
8
■
Application collided to something.
■
Check the operating conditions and limit
switch.
9
■
Motor encoder resolution setting does
not match with the servo motor.
■ Set correct value depending on actual
motor encoder to the Index 0x20FF-1
"Encoder resolution code".
* In case of the alarm caused by conditions in #3 (above), there is a risk of burning out the servo
motor if OFF and ON of control power supply is repeated. Wait for longer than 30 min for cooling
purposes after power shut OFF, and resume operations.