Excell 120S User Manual page 56

EXCELL PRECISION CO., LTD
 Equivalent Circuits
Input
VS
IN 1 ~ IN 8 and COM 1. Input signal - Open  OFF, Short  ON.

 Warning: Don't use external power (AC or DC) to connect to the input terminals.
Output
Vs
040112XX
120S
EX2002
inside
Ic 5mA
IN 0 ~ IN 7
COM 1
120S
EX2002
inside
Vex(30 Vmax)
Vex
Spark killer
OUT 0~7
30 mA max
COM2
Vex
Photo-coupler
55
Relay
Diode
Load
Varistor
Load
DC/IN
AC/IN
ZSME400000004