Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

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15. MR-J3W-0303BN6 SERVO AMPLIFIER
15 - 20
15.3.5 Alarm occurrence timing chart
CAUTION
When an alarm has occurred, remove its cause, make sure that the operation signal
is not being input, ensure safety, and reset the alarm before restarting operation.
When alarms are occurring in both axes of A and B, shut off the main circuit power
supply. Not doing so may cause a fire when a regenerative transistor malfunctions or
the like may overheat the regenerative resistor.
POINT
If Servo-on (SON) is turned on during the electronic dynamic brake is operating, the
servo-on status will not be enabled until electromagnetic brake is released.
The time constant " " for the electronic dynamic brake will be shorter than that of
normal dynamic brake. Therefore, coasting distance will be longer than that of
normal dynamic brake. For how to set the electronic dynamic brake, refer to
parameter No.PF06 and PF12.
When an alarm occurs in the servo amplifier, the electronic dynamic brake will operate and stop the servo motor.
Shut off the main circuit power supply by the external sequence as soon as an alarm occurs. To deactivate the
alarm, cycle the control circuit power or give the error reset or CPU reset command from the servo system
controller. However, the alarm cannot be deactivated unless its cause is removed.