
ACCULINK 3172 and 3174 E1 DSU/CSU
D-14
March 1999
3170-A2-GB20-30
Power Input Connector
The input power connector leads are shown in
Table D-9.
Table D-9
DC Power Connector
Signal
Pin Number
– 48 Vdc Return
1, 2
– 48 Vdc A
6
– 48 Vdc B
5
+24 Vdc
5
+24 Vdc Return
4
Chassis Ground
3
Optional DC Power Cable
The power cable is a 14.5-foot, 18 AWG stranded
cable. The connector is terminated at one end with a
6-position connector. The other end of the cable is
terminated with a bare wire that should be connected to a
dc power source. Figure D-8 shows the wire colors. The
power source can be either a single source of +24 Vdc or
up to two sources of – 48 Vdc (A and B). You cannot
c24 Vdc and – 48 Vdc to the same unit. See the
installation instructions in Chapter 2,
Installation
.
Figure D-8. DC Power Cable