GE Industrial Solutions Entellisys System User Manual - Manual (Page 133)

Discrete inputs/outputs 133
10
10.1.1.8 Cable
Discrete I/O boards connect with terminal blocks by a 68-pin SCSI cable. The cable is shielded
and provides one-to-one connection. Discrete I/O boards include four common connections in
addition to the 64 I/O points provided. Entellisys system requires as many cables as there are
boards installed in two CPUs. The recommended cable is CBCC166035 from Black Box. No
off-the-shelf cable could fulfill length and shielding requirements, and GE has an arrangement
with Black Box to make a special 11 ft. shielded cable.
Figure 10-5 illustrates the correct way to connect discrete I/O boards with terminal blocks.
Figure 10-5 Connecting CPU with terminal blocks
10.1.1.9 Power supply
Input and output relays in the discrete I/O subsystems require +5V control power. This power is
supplied by +5Vdc general-purpose power supply. The recommended power supply is SWS50-5
manufactured by Lambda Americas.
TERMINAL BLOCK 0
TERMINAL BLOCK 1
CCPU
1. CONNECT HD68 CABLE TO PMC CONNECTOR ON CCPU
CABLE 0
2. CONNECT OTHER END OF CABLE TO TERMINAL BLOCK
3.CONNECT HD68 TO PMC CONNECTOR ON CCPU
FOR ADDITIONAL 64 POINTS
CABLE 1
FOR ADDITIONAL 64 POINTS
4. CONNECT OTHER END OF CABLE TO TERMINAL BLOCK
P
C
1
M
C
M
O
P
C
0
M