Mitsubishi Electric MELSEC-L LD75D, User Manual

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CHAPTER 3 SPECIFICATIONS AND FUNCTIONS
3
3.
4 Spec
ificat
ions
o
f I
nput
/O
ut
put
I
n
te
rf
aces wit
h Ex
te
rn
al
Devices
Drive unit READY
(READY)
1A11 1B11 2A11 2B11
• This signal turns ON when the drive unit is normal and can accept the feed pulse.
• The LD75 checks the drive unit READY signal, and outputs the OPR request if the
system is not in the READY state.
• When the drive unit is inoperable, such as if an error occurs in the drive unit's control
power supply, this signal will turn OFF.
• If this signal is turned OFF during positioning, the system will stop. The system will not
start even if this signal is turned ON again.
• When this signal turns OFF, the OPR complete signal will also turn OFF.
Drive unit READY common
(RDYCOM)
1A12 1B12 2A12 2B12 • Common for drive unit READY signal.
Deviation counter clear
(CLEAR)
1A13 1B13 2A13 2B13
• This signal is output during machine OPR. (Note that it is not output during the count
method 2).)
(Example) When machine OPR is carried out in the stopper 2) method.
• The output time of the deviation counter clear signal is set in "[Pr.55] Deviation counter
clear signal output time".
• Use the drive unit that can reset the droop pulse amount in the internal deviation
counter when the LD75 turns this signal ON.
(Note) The deviation counter clear is a signal output by the LD75 during machine OPR. It
cannot be output randomly by the user.
Deviation counter clear
common (CLRCOM)
1A14 1B14 2A14 2B14 • Common for deviation counter clear signal
Signal name
Pin No.
Signal details (Negative logic is selected by external I/O signal logic selection)
AX1 AX2 AX3 AX4
OFF
ON
OFF
ON CLEAR
OPR speed
Creep speed
Near-point dog
Zero signal
Time
Speed
After feed pulse output stops
Stopper
Pr.46
Pr.47
Pr.55 Deviation counter
clear signal output time