System Sensor DH400 - Page 7

D400-14-00 7 I56-554-05
24 VDC
AUX POWER
SUPPLIED
BY USER
(100mA
SUPPLY)
DH400
DUCT DETECTOR
24 VAC (+10%, –15%)
FULL WAVE RECTIFIED,
UNFILTERED POWER
MAY BE USED
RTS451/RTS451KEY (OPTIONAL)
REMOTE TEST STATION
METHOD #1 — AUX POWER LOCATED AT DUCT DETECTOR
MAGNET
TEST
SWITCH
ALARM
LED (RED)
1
2
4
5
(+)
(–)
(+)
(–)
3
4
6
7
8
2.8 VDC
IN ALARM
(–)
(+)
24 VDC
AUX POWER
SUPPLIED
BY USER
(100mA
SUPPLY)
MAGNET
TEST
SWITCH
ALARM
LED (RED)
1
2
4
5
(+)
(–)
(+)
(–)
3
4
6
7
2.8 VDC
IN ALARM
(–)
(+)
24 VAC (+10%, –15%)
FULL WAVE RECTIFIED,
UNFILTERED POWER
MAY BE USED
RTS451/RTS451KEY (OPTIONAL)
REMOTE TEST STATION
DH400
DUCT DETECTOR
METHOD #2 — AUX POWER LOCATED AT TEST STATION
Figure 7. Wiring diagram for RTS451/RTS451KEY Remote Test Station to 2-wire duct detectors:
A78-2351-00