37 
 
Line driver pulse wiring method   
 PLC, CNC, SCM    servo driver 
HP-
HP+
GND
120Ω
2KΩ
2KΩ
HD-
HD+
2KΩ
2KΩ
10KΩ
10KΩ
10KΩ
10KΩ
GND
 
 
Note: In order to resist interference, twisted-pair shielding wire must be used. 
 
Note: 
(1) The power supply voltage range of P- / P+ 24V and D- / D+ 24V is 18V ~ 25V. The power 
supply voltage range of P- / P+ 5V and D- / D+ 5V is 3.3V ~ 5V. If it is lower than 18V / 3.3V, there 
may be abnormal pulse and direction. 
(2) Servo pulse input port is ON for 10mA. 
(3) If the controller is Xinje PLC, the rated current of the pulse output port is 50mA. According to 
this data, it can be judged that one pulse theoretically can drive at most five servos. It is recommended 
not to exceed 3. 
3.2.2 SI input signal 
Please use a relay or an open collector transistor circuit to connect. When using relay connection, 
please select the relay for small current. If the relay is not small current, it will cause bad contact. 
Multifunctional input signal terminal 
Defaulted assignment of input terminals 
P-OT/forward run 
prohibition 
N-OT/reverse run 
prohibition 
 
Open collector (power supply is 24V) 
              Relay type (power supply is 24V) 
Upper device                            servo driver 
SI
+24V
+
COM2
Y2
0V
+24V
R=3.3KΩ
Upper device                            servo driver 
R=3.3KΩ
+24V
0V
Y2
COM2
+
+24V
SI
Note: SI10 terminal is high-speed input port, and SI1-SI9 are low-speed input ports. 
 
3.2.3 SO output signal 
Multifunctional output terminal 
 
Note: 
(1)  It  is  suggested 
to  add  the 
differential 
isolation  board  of 
Xinje; 
(2) CW/CCW pulse 
input  frequency  is 
2M  at  most,  and 
AB  phase  pulse 
frequency  is  2M  at 
most.