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Connecting the Alarm Relays
1. The illustration below shows the wiring for the alarm
relays from UIT1 (dashed lines) to UIT2. TB-X's are the
field terminals. Refer to the panel wiring for location of the
field terminals.
2. Connect the Relay Driver Output signals to the relays
shown in the illustration below.
Backside of UIT
RS-485 PORTS
FIELD
REMOTE
1
2
3
4
5
6
WH
BK
S
WH
BK
S
BK
WH
5
4
3
2
SH
9
8
7
Field Port
6 | nVent.com
FAIL SAFE RELAY OUTPUTS
RELAY 1
RELAY 2
1
2
3
4
5
6
7
8
9
BK
WH
12
11
14
1
5
4
3
2
1
6
SH
9
8
7
6
Remote Port
A2
A1
8
7
6
5
4
3
2
1
Door Mounted
AC INPUT
RELAY 3
10
11
1
2
3
14
12
12
11
11
L
N
14
14
Power Supply
Lambda
12 Vdc @ 4.5 Amps
DSP60-12
A2
A1
A2
A1
Vout Adj.
TB-X
TB-X
TB-X
TB-X
TB-X
TB-X
13
AR
To Alarm Lamp/Switch
Neutral
Line
Mounted on Panel Door
Fuse
–
–
+
+
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