Specifications

3
3.WIRING
3– 21
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
Servo amplifier
PP
PG
NP
NG
Forward rotation pulse train
(transistor)
Reverse rotation pulse train
(transistor)
(OFF) (OFF) (OFF)(ON) (ON)
(ON) (ON) (ON)(OFF) (OFF)(OFF)
Servo amplifier
VDD
DC24V
OPC
Approx. 1.2kΩ
Approx. 1kΩ
PP
NP
SD
SG
Forward rotation
pulse train
Reverse rotation
pulse train
PP
PG
NP
NG
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.