Note: SI2 terminal signal can be switched only if it is a constant ON signal. 
 
Q9: What is the connection mode between PLC and servo? 
1. NPN low-level output PLC: Y0 pulse connects P-, Y1 direction connects D-, +24V connects P+24, 
D+24. (Xinje PLC as an example) 
PNP high-level output PLC: Q0.0 pulse connects P+24, Q0.2 direction connects D+24, 0V connects P-, 
D-. (Siemens PLC as an example) as follows: 
 
 
 
 
Q10: What is the external connection method and parameter setting of regenerative resistance? 
There are P+, D, C terminals on the servo interface. There are short connectors between P+  and C 
(using built-in resistor). When the built-in resistor specifications are insufficient, the external resistor 
should be replaced. The specifications of the external regenerative resistor please refer to chapter 1.4.1. 
(1)  P+,  D,  C  interface  model:  Remove  the  short  joint  between  P+,  D,  and  connect  the  external 
regenerative resistance to P+, C. 
(2) P+, PB interface model: connect external regenerative resistance to P+, PB. 
(3) Version number parameter U2-07 < 3700, set P0-24 = 1, P0-25 = power value, P0-26 = resistance 
value. 
(4) Version number parameter U2-07 ≥ 3700, P0-24 need not be set, P0-25 = power value, P0-26 = 
resistance value. 
Note: Before 3700 version, P0-24 should be set. Value 0 is for built-in resistance and value 1 is for 
external resistance. 
 
Q11: The service life of tank chain? 
The bending resistance is 5 million times and the bending radius is 50 mm.