3.2 Alarm Occurrence Timing Chart - Mitsubishi Electric Melservo-J4 MR-J4-DU*B4-RJ100 Series Instruction Manual

3.2
Alarm occurrence timing chart
CAUTION
• When an alarm has occurred, remove its cause, make sure that the operation signal is not being inputted, ensure safety, and reset the alarm before
restarting operation.
When SSCNET III/H communication is shut off, the servo motor stops with the dynamic brake.
In the torque control mode, the forced stop deceleration function is unavailable.
This section describes MR-J4-DU_B4-RJ100 drive units only. For MR-CV55K4_power regeneration converter
units, refer to section 3.3 in "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) Instruction Manual".
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.
Timing charts in this section show that an alarm occurs in any axis in the four axis of the parallel drive system.
Servo system
controller
SSCNET III/H
Encoder master servo amplifier
Power
regeneration Drive
converter unit 1 unit 1
Alarm non-occurrence axis
3 SIGNALS AND WIRING
26

3.2 Alarm occurrence timing chart

Alarm occurrence
Encoder slave servo amplifier 1
Power
regeneration Drive
converter unit 2 unit 2
Alarm occurrence axis
Servo motor
Encoder slave servo amplifier 2
Power
regeneration Drive
converter unit 3 unit 3
Alarm non-occurrence axis
Encoder slave servo amplifier 3
Power
regeneration Drive
converter unit 4 unit 4
Alarm non-occurrence axis