4. STARTUP
4 - 13
No. Start-up sequence
Fault
Investigation
Possible cause
Reference
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 several times to
complete auto tuning.
Gain adjustment fault
Chapter
6
4
Gain adjustment
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 several 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
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 MELSERVO-JE MR-JE-100A
Page 23: ...1 FUNCTIONS AND CONFIGURATION 1 12 MEMO ...
Page 29: ...2 INSTALLATION 2 6 MEMO ...
Page 91: ...3 SIGNALS AND WIRING 3 62 MEMO ...
Page 171: ...5 PARAMETERS 5 44 MEMO ...
Page 195: ...6 NORMAL GAIN ADJUSTMENT 6 24 MEMO ...
Page 221: ...7 SPECIAL ADJUSTMENT FUNCTIONS 7 26 MEMO ...
Page 249: ...8 TROUBLESHOOTING 8 28 MEMO ...
Page 255: ...9 DIMENSIONS 9 6 MEMO ...
Page 263: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 293: ...11 OPTIONS AND PERIPHERAL EQUIPMENT 11 30 MEMO ...