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4. SAFETY OBSERVATION FUNCTION
(b) Stop with forced stop deceleration
Refer to section 3.6 of "MR-J4-_B_(-RJ) Servo Amplifier Instruction Manual" or section 3.7 of "MR-
J4-_A_(-RJ) Servo Amplifier Instruction Manual" for operation of forced stop deceleration.
When the SS1 function operates, the motor will decelerate according to [Pr. PC24 Forced stop
deceleration time constant]. When the deceleration command is completed and the servo motor
speed is decreased to the setting of [Pr. PC07 Zero speed] or less, the base circuit will be shut off
and the dynamic brake will be activated after the delay time specified with [Pr. PC02 Electromagnetic
brake sequence output] has passed. When SS1/SS2 monitoring deceleration time is shorter than
actual deceleration time to a stop, the STO function operates during the deceleration.
Servo motor speed
SS1C
(SS1 command)
MBR
(Electromagnetic
brake interlock)
Base circuit
(Energy supply to
the servo motor)
STOS
(STO output)
0 r/min
ON (disabled)
OFF (enabled)
ON (disabled)
OFF (enabled)
ON
OFF
ON
OFF (shut-off)
4 - 25
SS1 in progress
deceleration
Stop with dynamic brake
to a stop
SS1/SS2 monitoring
deceleration time
Model speed command 0 and equal
to or less than zero speed
Electromagnetic brake sequence output
STO status
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