Mitsubishi Electric MELSEC-L LD75D, User Manual

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74
3.4.3
List of input/output signal details
The details of each LD75 external device connection connector are shown below:
Signal name
Pin No.
Signal details (Negative logic is selected by external I/O signal logic selection)
AX1 AX2 AX3 AX4
Manual pulse generator A-
phase
(PULSER A+)
Manual pulse generator B-
phase
(PULSER B+)
1A19
1A20

• Input the pulse signal from the manual pulse generator A phase and B phase.
• If the A phase leads the B phase, the positioning address will increase at the rising and
falling edges of each phase.
• If the B phase leads the A phase, the positioning address will decrease at the rising and
falling edges of each phase.
Manual pulse generator A
common
(PULSER A-)
Manual pulse generator B
common
(PULSER B-)
1B19
1B20

Zero signal (+24V) (PG024) 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 and the
OPR complete is input from an external source.
• The zero signal is detected at turning from OFF to ON.
Zero signal (+5V) (PG05) 1A9 1B9 2A9 2B9
Zero signal common
(PG0COM)
1A10 1B10 2A10 2B10 • Common for zero signal (+5V) and zero signal (+24V).
Pulse output F (+) (PULSE
F+)
Pulse output F (-) (PULSE
F-)
1A15
1A16 1B15
1B16 2A15
2A16 2B15
2B16
• Output the positioning pulses and pulse sign for the differential driver output system
compatible drive unit. (LD75D  only)
Pulse output R (+) (PULSE
R+)
Pulse output R (-) (PULSE
R-)
1A17
1A18 1B17
1B18 2A17
2A18 2B17
2B18
Pulse output F (PULSE F)
Pulse output F common
(PULSE COM)
1A15
1A16 1B15
1B16 2A15
2A16 2B15
2B16
• Output the positioning pulses and pulse sign for the open collector output system
compatible drive unit. (LD75P  only)
Pulse output R (PULSE R)
Pulse output R common
(PULSE COM)
1A17
1A18 1B17
1B18 2A17
2A18 2B17
2B18
Upper limit signal (FLS) 1A1 1B1 2A1 2B1
• This signal is input from the limit switch installed at the upper limit position of the stroke.
• 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.
Lower limit signal (RLS) 1A2 1B2 2A2 2B2
• This signal is input from the limit switch installed at the lower limit position of the stroke.
• 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
(DOG)
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.
Stop signal (STOP) 1A4 1B4 2A4 2B4
• Input this signal to stop positioning.
• When this signal turns ON, the LD75 will stop the positioning being executed. After that,
even if this signal is turned from ON to OFF, the system will not start.
External command signal
(CHG)
1A5 1B5 2A5 2B5
• Input a control switching signal during speed-position or position-speed switching
control.
• Use this signal as the input signal of positioning start, speed change request, and skip
request from an external source. Set the function to use this signal in "[Pr.42] External
command function selection".
Common (COM)
1A6
1A7 1B6
1B7 2A6
2A7 2B6
2B7
• Common for upper/lower limit, near-point dog, stop, and external command signals.
+1+1+1+1+1+1+1+1 -1 -1- 1 -1 -1 -1 -1 -1
B phase
A phase A phase
B phase
Positioning
address
Positioning
address
[When increased] [When decreased]