Mitsubishi Electronics QD75P, QD75D user manual Setting the dwell time during an OPR retry

12 CONTROL SUB FUNCTIONS

MELSEC-Q

(3)Setting the dwell time during an OPR retry

The OPR retry function can perform such function as the dwell time using

"

Pr.57

Dwell time at OPR retry" when the reverse run operation is carried

out due to detection by the limit signal for upper and lower limits and when the machine OPR is executed after the near point dog is turned OFF to stop the operation.

"Pr.57

Dwell time during OPR" is validated when the operation stops at

the "A" and "B" positions in the following drawing. (The dwell time is the same value at both positions "A" and "B".)

		Pr. 44 OPR direction	Stop by limit
Machine OPR
			signal detection
executed again
B	OP		A
		Machine OPR start
Stop by near-point
dog OFF		Reverse run operation
		after limit signal detection
Near-point dog		Limit signal OFF

Zero signal

Fig. 12.3 Setting the dwell time during an OPR retry

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