4 SAFETY MONITORING FUNCTIONS
Safety Monitoring Functions 4-53
(b) When the motors fail to decelerate within monitoring time with SS2 enabled
Time is measured after the SS2 command is enabled. If the motors fail to stop by the time the SS2
deceleration monitoring time elapses, error H2281 occurs and STO shuts off the driving power. The
operation sequence is shown below:
Fig. 4-39: When the motors fail to decelerate within monitoring time with SS2 enabled
(c) When the SS2 command is disabled before the motors stop with SS2 enabled
Once the SS2 command is enabled, the SS2 monitoring cannot be canceled until the SOS monitoring state
becomes active (the deceleration and stop operation cannot be canceled). After the SOS state becomes
active, the SS2 monitoring is canceled.
Fig. 4-40: When the SS2 command is disabled before the motors stop with SS2 enabled
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