3 BASIC FUNCTION
3.15 Forced stop deceleration function
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3
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].
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.
Servo
parameter
Symbol
Name
Outline
PA04.3
*AOP1
Forced stop deceleration function
selection
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)
PC17
ZSP
Zero speed
Set the level of ZSP (Zero speed detection).
Initial value: 50 [r/min], [mm/s]
PC51
RSBR
Deceleration time constant at
forced stop
Set the deceleration time constant at forced stop.
Initial value: 100 [ms]
ON
OFF
ON
OFF
0 r/min
[Pr. PC24]
ON
OFF
EM2 (Forced stop 2)
(Enabled)
Dynamic brake
+
electromagnetic brake
Normal
operation
Forced stop
deceleration
Rated speed
Servo motor speed
Command
Zero speed ([Pr. PC07])
Deceleration time
Base circuit
(Energy supply to the
servo motor)
(Enabled)
MBR
(Electromagnetic brake
interlock)