Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 125

• When the forced stop deceleration function is disabled
The operation status is the same as in the following.
Page 114 When the forced stop deceleration function is not enabled
• When network communication shut-off occurs
The dynamic brake may operate depending on the communication shut-off status.
Network communication shut-off occurrence
Servo motor speed
0 r/min
Base circuit
ON
(Energy supply to
the servo motor) OFF
Servo amplifier
display
MBR
ON
(Electromagnetic
OFF
brake interlock)
ON (no alarm)
ALM (Malfunction)
OFF (alarm)
Release
Electromagnetic
brake
Activate
ON
Servo-on command
(from controller)
OFF
ON
Ready-on command
(from controller)
OFF
*1 The model speed command is a speed command generated in the servo amplifier for forced stop deceleration of the servo motor.
■Both main and control circuit power supplies off
Servo motor speed
0 r/min
ON
Base circuit
OFF
MBR
ON
(Electromagnetic *2
brake interlock) OFF
No alarm
Alarm
[AL. 10 Undervoltage]
Alarm
ON
Main circuit
power supply
Control circuit
OFF
*1 Variable according to the operation status.
*2 ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated.
No alarm (d1)
Dynamic brake
Approx. 10 ms
*1
Operation delay time of
the electromagnetic brake
Model speed command 0
and equal to or less than
zero speed
Tb [Pr. PC02 Electromagnetic
brake sequence output]
8D
Dynamic brake
+ Electromagnetic brake
Electromagnetic brake
3.9 Servo motor with an electromagnetic brake
*1
Operation delay time
of the electromagnetic
brake
3 SIGNALS AND WIRING
123
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