dormakaba 1856 HT SD, 1856 SFT SD Installation Instructions
08220880
03-2020
1800 Closer
11
Wiring
120 VAC, 50/60 HZ: Connect the 120 VAC incoming voltage wires to the primary wires of the transformer.
Connect the secondary transformer wires to terminals #3 and #14 of the detector module. This connection is
not polarity dependent.
Secondary
Transformer
Wires
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
Primary
Transformer
Wires
120VAC
Power
Input
Step
Down
Transformer
24V AC/DC: The step down transformer is not used in this connection. Connect 24V AC/DC power to
terminals #3 and #14 on the detectors. These connections are not polarity dependent. If the unit is
connected to a second unit, connect terminal #3 of the first unit to terminal #3 of the second unit and
connect terminal #14 of the first unit to terminal #14 of the second unit. Continue this process for any
subsequent units to be powered from the same power supply.
SD-2
SD-2
SD-2
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
13
12
1
8
2
9
10
3
4
5
6
7
15
14
11
(3)
(2)
(1)
24 VAC/DC
power supply
+
-
SD-2
4.2 Power supply 120 VAC, 50/60 HZ
4.3 Power supply 24 V AC/DC
Fig.11
Fig.12
#3
#14
#3
#14
#3
#14
#3
#14
