Mitsubishi Electronics QD75P, QD75D user manual List of input/output signal details

3SPECIFICATIONS AND FUNCTIONS

3.4.3 List of input/output signal details

MELSEC-Q

The details of each QD75 external device connection connector are shown below:

Signal name		Pin No.				Signal details
	AX1	AX2	AX3	AX4	(Negative logic is selected by external I/O signal logic selection)
					• Input the pulse signal from the manual pulse generator A phase and B
Manual pulse generator A					phase.
phase	1A19		—		• If the A phase leads the B phase, the positioning address will increase at the
Manual pulse generator B	1A20				rising and falling edges of each phase.
phase					• If the B phase leads the A phase, the positioning address will decrease at the
					rising and falling edges of each phase.
					[When increased]		[When decreased]
Manual pulse generator A					A phase		A phase
common	1B19		—
Manual pulse generator B	1B20				B phase		B phase
common
					Positioning+1+1+1+1+1+1+1+1		Positioning -1 -1 -1 -1 -1 -1 -1 -1
					address		address
Zero signal (+24V)	1A8	1B8	2A8	2B8	• Input the zero signal for machine OPR.
					Use the pulse encoder's zero signal and so on.
					• Also use this signal when the machine OPR method is the stopper method
Zero signal (+5V)	1A9	1B9	2A9	2B9	and the OPR complete is input from an external source.
					• The zero signal is detected at turning from OFF to ON.
Zero signal common	1A10	1B10	2A10	2B10	• Common for zero signal (+5V) and zero signal (+24V).
Pulse output F (+) <CW+>	1A15	1B15	2A15	2B15
Pulse output F (–) <CW–>	1A16	1B16	2A16	2B16	• Output the positioning pulses and pulse sign for the differential driver output
Pulse output R (+) <CCW+>	1A17	1B17	2A17	2B17	system compatible drive unit.
Pulse output R (–)					(QD75D	only)
<CCW–>	1A18	1B18	2A18	2B18
Pulse output F	1A15	1B15	2A15	2B15
<CW>
Pulse output F common	1A16	1B16	2A16	2B16	• Output the positioning pulses and pulse sign for the open collector output
<CWCOM>					system compatible drive unit.
Pulse output R	1A17	1B17	2A17	2B17
					(QD75P	only)
<CCW>
Pulse output R common	1A18	1B18	2A18	2B18
<CCWCOM>

					• This signal is input from the limit switch installed at the upper limit position of
					the stroke.
Upper limit signal	1A1	1B1	2A1	2B1	• Positioning will stop when this signal turns OFF.
					• When OPR retry function is valid, this will be the upper limit for finding the
					near-point dog signal.
					• This signal is input from the limit switch installed at the lower limit position of
					the stroke.
Lower limit signal	1A2	1B2	2A2	2B2	• Positioning will stop when this signal turns OFF.
					• When OPR retry function is valid, this will be the lower limit for finding the
					near-point dog signal.
Near-point dog signal	1A3	1B3	2A3	2B3	• This signal is used for detecting the near-point dog during OPR.
					• The near-point dog signal is detected at turning from OFF to ON.

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