DCA
Page 11
Figure 7.
DCA in an Explosion-proof Enclosure Terminal Locations
Figure 8.
DCA with DI Option in an Explosion-proof Enclosure Terminal Locations
7
8
9
10
11
12
6
5
4
3
2
1
`
GND
+DC — AC
–DC — ACC
UNC — UPPER RELAY
NORMALLY CLOSED
COM — COMMON
UNO — UPPER RELAY
NORMALLY OPEN
LOWER RELAY
NORMALLY OPEN — LNO
COMMON — COM
LOWER RELAY
NORMALLY CLOSED — LNC
CURRENT OR VOLTAGE
+INPUT — +IN
CURRENT OR VOLTAGE
-INPUT — -IN
OPTION — +TX FOR TRANSMITTER
EXCITATION, +REF FOR DEVIATION ALARM
7
8
9
10
11
12
6
5
4
3
2
1
GND
+DC — AC
–DC — ACC
UNC — UPPER RELAY
NORMALLY CLOSED
COM — COMMON
UNO — UPPER RELAY
NORMALLY OPEN
LOWER RELAY
NORMALLY OPEN — LNO
COMMON — COM
LOWER RELAY
NORMALLY CLOSED — LNC
CURRENT OR VOLTAGE
-INPUT — -IN
UPPER ALARM CURRENT OR
VINPUT — +IN UPP
LOWER ALARM CURRENT OR
VOLTAGE -INPUT — +IN LOW
