Base Circuit Shut-Off Delay Time Function - Mitsubishi MR-JE-10B Instruction Manual

3. SIGNALS AND WIRING
(2) Timing chart
When EM2 (Forced stop 2) turns off, the motor will decelerate according to [Pr. PC24 Forced stop
deceleration time constant]. Once the motor speed is below [Pr. PC07 Zero speed] after completion of
the deceleration command, base power is cut and the dynamic brake activates.

3.6.2 Base circuit shut-off delay time function

The base circuit shut-off delay time function is used to prevent a vertical axis from dropping at a forced stop
(EM2 goes off), alarm occurrence, or SSCNET III/H communication shut-off due to delay time of the
electromagnetic brake. Set the time from MBR (Electromagnetic brake interlock) off to base circuit shut-off
with [Pr. PC02].
(1) Timing chart
EM2 (Forced stop 2)
Servo motor speed
0 r/min
Base circuit
(Energy supply to
the servo motor)
MBR
(Electromagnetic
brake interlock)
EM2 (Forced stop 2)
Rated Speed
Servo motor speed
Base circuit
(Energy supply to
the servo motor)
MBR
(Electromagnetic
brake interlock)
ON
OFF (Enabled)
ON
OFF
ON
OFF (Enabled)
ON
OFF (Enabled)
Ordinary
operation
0 r/min
ON
OFF
ON
OFF (Enabled)
When EM2 (Forced stop 2) turns off or an
alarm occurs during driving, the servo
motor will decelerate based on the
deceleration time constant. MBR
(Electromagnetic brake interlock) will turn
off, and then after the delay time set in [Pr.
PC02], the servo amplifier will be base
circuit shut-off status.
[Pr. PC02]
3 - 23
Dynamic brake
Forced stop
Electromagnetic brake
deceleration
Command
Zero speed
([Pr. PC07])
Deceleration time
[Pr. PC24]
+