List Of Input/Output Signal Details - Mitsubishi Electric MELSECQ Series User Manual

3 SPECIFICATIONS AND FUNCTIONS

3.4.3 List of input/output signal details

Signal name
Near-point dog signal
Speed-position switching signal
Common
Zero signal
Zero signal common
External power input (0V)
External power input (+24V)
Pulse output F
Pulse output R
Pulse output common
Deviation counter clear
Deviation counter clear common
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The details of each QD70 external device connection connector are shown below:
Pin No. Symbol
A10 B10
DOG
A9 B9
A12 B12
CHG
A11 B11
A8 B8 COM
A19 B19
PGO
A17 B17
A20 B20
PGO COM • Common for zero signal.
A18 B18
A1 (COM1) 24G
B1 (COM1) +24V
A7 B7
PULSE F
A4 B4
A5 B5
PULSE R
A2 B2
A6 B6 PULSE
A3 B3 COM
A15 B15
CLEAR
A13 B13
A16 B16 CLEAR
A14 B14 COM
search engine
(Negative logic is selected by external I/O signal logic selection)
• This signal is used for detecting the near-point dog during machine OPR
control.
• The near-point dog signal is detected at turning from OFF to ON.
• This signal is input as a control switching signal in speed-position switching
control.
• Common for near-point dog signal and speed-position switching control
signal.
• Input the zero signal for machine OPR control.
Use the pulse encoder's zero signal and so on.
• Also use this signal when the 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.
• These signals are used to input 24VDC power for driving the pulse output
circuit. (Common to all axes)
• This signal is used to output command pulses to the open collector
compatible drive unit.
CW/CCW mode: CW, PULSE/SIGN mode: PULSE
• This signal is used to output command pulses to the open collector
compatible drive unit.
CW/CCW mode: CCW, PULSE/SIGN mode: SIGN
• Common for pulse output F and pulse output R.
• This signal is output during machine OPR control.
(Example) When carry out machine OPR control with stopper 2 .
Speed
OPR speed
OPR. 4
Pr. 6 Bias
speed at star
Near-point dog
Pr. 8
clear signal output time
CLEAR
• The output time of the deviation counter clear signal is set in " Pr. 8 Deviation
counter clear signal output time".
• Use the drive unit that can reset the droop pulse amount in the internal
deviation counter when the QD70 turns this signal ON.
(Note) The deviation counter clear is a signal output by the QD70 during
machine OPR control. It cannot be output randomly.
• Common for deviation counter clear
MELSEC-Q
Signal details
Creep speed
OPR. 5
t
Zero signal
Deviation counter
After feed pulse output stops
Stopper
Time
OFF
ON
OFF
ON
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