Detailed Description Of The Signals; Position Control Mode - Mitsubishi Electric Melservo MR-J3-A Instruction Manual

3. SIGNALS AND WIRING

3.6 Detailed description of the signals

3.6.1 Position control mode

(1) Pulse train input
(a) Input pulse waveform selection
Command pulses may be input in any of three different forms, for which positive or negative logic can
be chosen. Set the command pulse train form in parameter No. PA13. Refer to section 5.1.10 for
details.
(b) Connections and waveforms
1) Open collector system
Connect as shown below:
The explanation assumes that the input waveform has been set to the negative logic and forward and
reverse rotation pulse trains (parameter No. PA13 has been set to 0010). Their relationships with
transistor ON/OFF are as follows:
Forward rotation
pulse train
(transistor)
Reverse rotation
pulse train
(transistor)
24VDC
(OFF) (ON) (OFF) (ON)
(OFF)
Forward rotation command
3 - 37
Servo amplifier
OPC
DOCOM
Approx.
1.2k
PP
Approx.
1.2k
NP
SD
(OFF)
(ON) (OFF) (ON) (OFF) (ON)
Reverse rotation command