dormakaba 1856 HT SD, 1856 SFT SD Installation Instructions
08220880
03-2020
1800 Closer
12
Wiring
24V AC/DC with remote detectors: The step down transformer is not used in this connection. Perform wiring
connections as illustrated below. Additional units are wired in the same manner as unit #2. Installations using
a combination of SD-2 modules with and without remote area detectors can be wired accordingly by
substituting the wiring diagram section from unit #1, #2, or #3 in step 4.11 instead of unit #1, #2, or #3
shown below with remote detector. The vertical dashed lines indicate where one diagram would be
exchanged for another.
NOTE: Input voltage must match detector voltage. Detector voltage 24V AC/DC.
SD-2
1
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 input
4.4 Power supply 24 V AC/DC with remote detectors
Fig.13
4.5 ON/OFF switch (optional)
Fig.14
1.
Wire ON/OFF switch as shown above.
2.
Push button will cut power to the hold open
solenoid and the door will close.
3.
Pushing button a second time will engage
power to the hold open solenoid allowing the
door to be held open.
4.
The push button is accessible by inserting a
small cylindrical object thru the hole small
hole in end cap.
#6
#9
Main solenoid
Optional
ON/OFF
switch
Remote
Detector
Remote
Detector
Remote
Detector
#3
#14
#3
#14
#3
#14
