Communication  74 
Communication 
Installing communication options and control 
terminals 
 
  
Item  Description 
1 
Signal input 1 
2 
Signal input 2 
3 
4 
REPO (normally open) 
5 
REPO (normally closed) 
6 
DB-9 communication port 
7 
Redundant signal wiring (for parallel use only) 
8 
Relay output contacts 
9 
Option card bay 1 
10 
Option card bay 2 
 
To install the communication options and control terminals: 
1.  Install the appropriate option card and/or necessary cable(s). 
2.  Connect the cables to the appropriate locations. 
For detailed information, see "Communication options (on page 75)" or "Control terminals (on page 
76)." 
3.  Route and tie the cable(s) out of the way. 
4.  Power up the UPS.