Allen-Bradley 857 - Page 19

Rockwell Automation Publication 857-QS001B-EN-P - April 2017 19
Mounting and Wiring Instructions Chapter 2
Table 8 - Terminal X8 Model 857-3C8
Table 9 - Terminal X6
Available only when arc flash option is selected.
No: Symbol Description
1 DI21 Trip relay 14
2 DI22 Trip relay 14
3 COM1 Trip relay 13
4 DI23 Trip relay 13
5 DI24 Trip relay 12
6 COM2 Trip relay 12
7 DI25 Trip relay 11
8 DI26 Trip relay 11
9 COM3 Trip relay 10
10 DI27 Trip relay 10
11 DI28 Trip relay 9
12 COM4 Trip relay 9
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
No: Symbol Description
1BI External arc light input
2 BO Arc light output
3 COM Common connector of arc light I/O
4 S1>+ Arc sensor 1, positive connector
(1)
(1) Arc sensor itself is polarity free.
5 S1>– Arc sensor 1, negative connector
(1)
6 S2>+ Arc sensor 2, positive connector
(1)
7 S2>– Arc sensor 2, negative connector
(1)