DCA
Page 9
Figure 5.
Terminals Labeling, the PC DCA in the SMR
INTERNAL RACK SLOT
AND CONNECTOR
MOUNTING
FLANGES
PC DC A
1
15
7
LNO - LOWER RELAY NORMALLY OPEN
4
LNC - LOWER RELAY NORMALLY CLOSED
2
5
3
+IN — CURRENT OR V INPUT
10
-IN — CURRENT OR VOLTAGE - INPUT
13
1
15
COM - COMMON
UNC - UPPER RELAY NORMALLY CLOSED
COM - COMMON
UNO - UPPER RELAY NORMALLY OPEN
ONE TERMINAL
STRIP PER
CARD POSITION
NOTES :
Power is not applied to each PC connector strip, but to the rack terminal strip.
Power is supplied to the PC DCA at its pins 8 (
-
DC) and 9 (
+
DC).
Rack is shown with protective covers removed.
1.
2.
SMR
PC DCA
COMPONENT SIDE
-DC
+DC
GND
ONE POWER
CONNECTION
PER RACK
OPTION — +TX, +REF
