Rockwell Automation 1775-MX_S4A,D17756.3.1 User Manual PLC-3 BACKUP CONC(OR.DU1 - Manual (Page 26)

Installing a Backup System
Chapter 2
2-11
Selecting a Backup Cable
Choose a backup cable for the switchover method desired. Table 2.C lists
the choices. See Figure 2.9 through Figure 2.11 for wiring information.
Table 2.C
Backup Cables
Switchover Method: Backup Cable:
Automatic switchover with no switchback 1775ĆCBA
Automatic switchover with controllable switchback 1775ĆCBB 1
1775ĆCM 2
Manual switchover 1775ĆCBB
1. Use for scanner backup configuration.
2. Use for MX backup configuration.
Figure 2.9
Backup Cable Wiring for Scanner Backup with Automatic Switchover
with No Switchback (Cat. No. 1775ĆCBA)
1
3
2
4
5
6
1
3
2
4
5
6
1775ĆCBA
BACKUP CABLE
SCANNER #1
BACKUP
CONNECTOR
SCANNER #1
BACKUP
CONNECTOR
PRIMARY
PROCESSOR
BACKUP
PROCESSOR
SHIELD
10976ĆI