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4. STARTUP
4 - 7
(5) 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
Servo system
controller
Servo-off command The base circuit is shut off and the servo motor coasts.
Ready-off command
The base circuit is shut off and the dynamic brake operates to
bring the servo motor to a stop.
Forced stop command
The servo motor decelerates to a stop with the command. [AL.
E7 Controller forced stop warning] occurs.
Servo amplifier
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 section 8. (Note))
EM2 (Forced stop 2) off
The servo motor decelerates to a stop with the command. [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.
STO (STO1, STO2) off
The base circuit is shut off and the dynamic brake operates to
bring the servo motor to a stop.
Note. Only a list of alarms and warnings is listed in chapter 8. Refer to "MELSERVO-J4 Servo Amplifier
Instruction Manual (Troubleshooting)" for details of alarms and warnings.