18 Rockwell Automation Publication 857-QS001B-EN-P - April 2017
Chapter 2 Mounting and Wiring Instructions
Table 7 - Terminal X8 Model 857-3C7
No: Symbol Description
1 DI21 Digital input 21
2 DI22 Digital input 22
3 COM1 Common potential of digital inputs 21…2
4 DI23 Digital input 23
5 DI24 Digital input 24
6 COM2 Common potential of digital inputs 23…24
7 DI25 Digital input 25
8 DI26 Digital input 26
9 COM3 Common potential of digital inputs 25…26
10 DI27 Digital input 27
11 DI28 Digital input 28
12 COM4 Common potential of digital inputs 27…28
13 T8 Trip relay 8 / Digital input 32
14 T8 Trip relay 8 / Digital input 32
15 T7 Trip relay 7 / Digital input 31
16 T7 Trip relay 7 / Digital input 31
17 T6 Trip relay 6 / Digital input 30
18 T6 Trip relay 6 / Digital input 30
19 T5 Trip relay 5 / Digital input 29
20 T5 Trip relay 5 / Digital input 29
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