4. STARTUP
4 - 14
No. Start-up
sequence
Fault
Investigation Possible
cause
Reference
4 Gain
adjustment Rotation ripples (speed
fluctuations) are large
at low speed.
Make gain adjustment in the
following procedure.
1. Increase the auto tuning
response level.
2. Repeat acceleration and
deceleration three times to
complete auto tuning.
Gain adjustment fault
Chapter
6
Large load inertia
moment causes the
servo motor shaft to
oscillate side to side.
If the servo motor may be driven
with safety, repeat acceleration
and deceleration three times to
complete auto tuning.
Gain adjustment fault
Chapter
6
4.4 Startup in torque control mode
Make a startup in accordance with section 4.1. This section provides the methods specific to the torque
control mode.
4.4.1 Power on and off procedures
(1) Power-on
Switch power on in the following procedure. Always follow this procedure at power-on.
1) Switch off SON (Servo-on).
2) Make sure that RS1 (Forward rotation selection) and RS2 (Reverse rotation selection) are off.
3) Turn on the power.
Data is displayed in 2 s after "U" (Analog torque command) is displayed.
(2) Power-off
1) Switch off RS1 (Forward rotation selection) or RS2 (Reverse rotation selection).
2) Switch off SON (Servo-on).
3) Shut off the power.
4.4.2 Stop
Turn off SON (Servo-on) after the servo motor has stopped, and then switch the power off.
If any of the following situations occurs, the servo amplifier suspends the running of the servo motor and
brings it to a stop. Refer to section 3.10 for the servo motor with an electromagnetic brake.
Operation/command Stopping
condition
Switch off SON (Servo-on).
The base circuit is shut off and the servo motor coasts.
Alarm occurrence
The servo motor decelerates to a stop with the command. With some alarms,
however, the dynamic brake operates to bring the servo motor to a stop. (Refer to
chapter 8.)
EM2 (Forced stop 2) off
This stops the servo motor with the dynamic brake. [AL. E6 Servo forced stop
warning] occurs. EM2 has the same function as EM1 in the torque control mode.
Refer to section 3.5 for EM1.
Simultaneous on or off of RS1 (Forward
rotation selection) and RS2 (Reverse rotation
selection)
The servo motor coasts.
Summary of Contents for MR-JE-_A
Page 9: ...A 8 MEMO ...
Page 15: ...6 MEMO ...
Page 29: ...1 FUNCTIONS AND CONFIGURATION 1 14 MEMO ...
Page 139: ...4 STARTUP 4 38 MEMO ...
Page 187: ...5 PARAMETERS 5 48 MEMO ...
Page 221: ...6 NORMAL GAIN ADJUSTMENT 6 34 MEMO ...
Page 259: ...8 TROUBLESHOOTING 8 8 MEMO ...
Page 265: ...9 DIMENSIONS 9 6 MEMO ...
Page 273: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 339: ...12 COMMUNICATION FUNCTION MITSUBISHI ELECTRIC GENERAL PURPOSE AC SERVO PROTOCOL 12 34 MEMO ...