Mitsubishi Electric MELSERVO MR-J2-A Product Specifications And Installation Manual page 106

3.WIRING
a. Open collector system
The explanation assumes that the input waveform has been set to the negative logic and
forward and reverse rotation pulse trains (parameter No.21 has been set to 0010). The
waveforms in the table on the preceding page are voltage waveforms of PP and NP based
on SG. Their relationships with transistor ON/OFF are as follows:
b. Differential line driver system
The explanation assumes that the input waveform has been set to the negative logic and
forward and reverse rotation pulse trains (parameter No.21 has been set to 0010). In the
differential line driver system, the waveforms in the table on the preceding page are as
follows. The waveforms of PP, PG, NP and NG are waveforms based on the ground of the
differential line driver.
Servo amplifier
VDD
OPC
PP
NP
SG
SD
Forward rotation pulse train
(OFF)
(transistor)
Reverse rotation pulse train
(transistor)
Servo amplifier
PP
PG
NP
NG
Forward rotation
pulse train
PP
PG
Reverse rotation
pulse train
NP
NG
3– 21
DC24V
Approx. 1.2kΩ
Approx. 1kΩ
(ON) (OFF) (ON) (OFF)
(OFF) (ON) (OFF) (ON) (OFF) (ON)
3