List Of Input Signal Details - Mitsubishi Electric MELSEC-QD75MH1 User Manual

3 SPECIFICATIONS AND FUNCTIONS

3.4.3 List of input signal details

Signal name
Manual pulse generator A
phase
Manual pulse generator B
phase
Manual pulse generator A
common
Manual pulse generator B
common
Upper limit signal
Lower limit signal
Near-point dog signal
Stop signal
External command signal/
switching signal
Common
Forced stop input signal
Forced stop input signal
common
Manual pulse generator power
supply (+ 5VDC)
Manual pulse generator power
supply (GND)
The details of each QD75MH external device connection connector are shown below:
Pin No.
AX1 AX2 AX3 AX4
1A19
—
1A20
1B19
—
1B20
1A1 1B1 2A1 2B1
1A2 1B2 2A2 2B2
1A3 1B3 2A3 2B3
1A4 1B4 2A4 2B4
1A5 1B5 2A5 2B5
1A6 1B6 2A6 2B6
1A7 1B7 2A7 2B7
1A8 —
1B8 —
1A15
—
1B15
1A14
—
1B14
(Negative logic is selected by external input signal logic selection)
• 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.
[When increased]
A phase
B phase
Positioning
+1+1+1+1+1+1+1+1
address
• 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.
• 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.
• This signal is used for detecting the near-point dog during OPR.
• The near-point dog OFF
• The near-point dog ON
• Input this signal to stop positioning.
• When this signal turns ON, the QD75MH will stop the positioning being
executed.
After that, even if this signal is turned from ON to OFF, the system will not
start.
• 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 device.
Set the function to use this signal in "
selection".
• Common for upper/lower limit, near-point dog, stop, and external command
signal/switching signals.
• This signal is input when batch forced stop is available for all axes of servo
amplifier.
• When this signal turns OFF, the QD75MH will be the forced stop.
• Power supply for manual pulse generator. (+ 5VDC)
• Power supply for manual pulse generator. (GND)
3 - 20
Signal details
[When decreased]
A phase
B phase
Positioning
-1 -1 -1 -1 -1 -1 -1 -1
address
ON is detected at the rising edge.
OFF is detected at the falling edge.
Pr.42
External command function
MELSEC-Q