Setting Method [A]; Timing Chart [G] [Wg] - Mitsubishi Electric MELSERVO-J5 Series User Manual

Setting method [A]

Set [Pr. PA04.3 Forced stop deceleration function selection] to enable/disable the forced stop deceleration function. Setting
[Pr. PA04.3 Forced stop deceleration function selection] to "2" (Forced stop deceleration function enabled) operates the
forced stop deceleration function when EM2 (Forced stop 2) is turned off. In addition, set the level of ZSP (Zero speed
detection) and the amount of time to reach 0 [r/min] or [mm/s] from the rated speed by using [Pr. PC17 Zero speed] and [Pr.
PC51 Deceleration time constant at forced stop].
Servo Symbol
parameter
PA04.3 *AOP1
PC17 ZSP
PC51 RSBR

Timing chart [G] [WG]

When EM2 (Forced stop 2) is turned off, the servo motor decelerates in accordance with the value of [Pr. PC24 Deceleration
time constant at forced stop]. Once the servo motor speed becomes below [Pr. PC07 Zero speed] after completion of the
deceleration command, the base circuit will be shut off and the dynamic brake will activate.
ON
EM2 (Forced stop 2)
OFF
Rated speed
Servo motor speed
0 r/min
Base circuit
ON
(Energy supply to the
OFF
servo motor)
MBR
ON
(Electromagnetic brake
OFF
interlock)
Name
Forced stop deceleration function
selection
Zero speed
Deceleration time constant at
forced stop
(Enabled)
Normal
operation
Command
Deceleration time
[Pr. PC24]
(Enabled)
Outline
Set "Forced stop deceleration function" to enabled/disabled.
0: Forced stop deceleration function disabled (EM1 is used)
2: Forced stop deceleration function enabled (EM2 is used) (initial value)
Set the level of ZSP (Zero speed detection).
Initial value: 50 [r/min], [mm/s]
Set the deceleration time constant at forced stop.
Initial value: 100 [ms]
Dynamic brake
Forced stop +
deceleration electromagnetic brake
Zero speed ([Pr. PC07])
3.15 Forced stop deceleration function
3 BASIC FUNCTION
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