Videolarm pfdw75tf2n 用户指南
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Figure 3
MountInG tHE HousInG
1. Mount the housing assembly to the mounting bracket and
housing coupling. A safety cable is included to temporarily hold it
while making wiring connections. Loop the safety cable over one
of the set screws on the coupling and make the appropriate con-
nections using the (2) screw-down connectors supplied.
housing coupling. A safety cable is included to temporarily hold it
while making wiring connections. Loop the safety cable over one
of the set screws on the coupling and make the appropriate con-
nections using the (2) screw-down connectors supplied.
2. Undo the safety cable, twist the housing onto the housing coupling,
and secure all (3) setscrews provided on the coupling (Figure 3).
and secure all (3) setscrews provided on the coupling (Figure 3).
Wiring color code
Power and control Inputs
(outside of housing)
1 Camera Power (24 VAC) Red
2 Camera Power (24 VAC) Orange
3 Accessory Power (24 VAC) Yellow
4 Accessory Power (24 VAC) Green
2 Camera Power (24 VAC) Orange
3 Accessory Power (24 VAC) Yellow
4 Accessory Power (24 VAC) Green
1 RS-485RXA Blue
2 RS-485RXB Violet
3 RS-485TXA Gray
4 RS-485TXB White
2 RS-485RXB Violet
3 RS-485TXA Gray
4 RS-485TXB White
1 Camera Power (24 VAC) Red
2 Camera Power (24 VAC) Orange
3 RS-485RXA Blue
4 RS-485RXB Violet
5 RS-485TXA Gray
6 RS-485TXB White
OPTIONAL LOW PRESSURE ALARM WIRING
7 Low Pressure Alarm White/Black
8 Alarm Ground White/Red
2 Camera Power (24 VAC) Orange
3 RS-485RXA Blue
4 RS-485RXB Violet
5 RS-485TXA Gray
6 RS-485TXB White
OPTIONAL LOW PRESSURE ALARM WIRING
7 Low Pressure Alarm White/Black
8 Alarm Ground White/Red
POWER
CONTROL
POWER AND CONTROL LEADS
Power and control outputs
(Inside of housing)
3. Clean the inside of the dome, with the text-wipe provided. Reat-
tach the housing dome and secure the (3) captive screws. do not
overtighten the screws
tach the housing dome and secure the (3) captive screws. do not
overtighten the screws
. Tighten only to the point at which the
gap between the ring and the housing top closes.
4. Clean the outside of the dome.
Set screws
notE:
Control wires are feed through wires only, and are not
labeled as a point of reference.
cALIBrAtInG unIts WItH LoW PrEssurE sEnsors
The Low Pressure alarm uses and absolute pressure sensor and
must be calibrated to the local altitude. To calibrate you must; power
up the unit. The green LED located in the center of the camera
bracket will turn on. After 30 seconds the LED will begin to blink. At
that time momentarily press the red push button switch located next
to the LED. LED will turn off indicating unit is calibrated. Calibration
is now complete. Unit will store this base value and does not need to
be recalibrated. To recalibrate repeat the above procedure.
must be calibrated to the local altitude. To calibrate you must; power
up the unit. The green LED located in the center of the camera
bracket will turn on. After 30 seconds the LED will begin to blink. At
that time momentarily press the red push button switch located next
to the LED. LED will turn off indicating unit is calibrated. Calibration
is now complete. Unit will store this base value and does not need to
be recalibrated. To recalibrate repeat the above procedure.
Alarm sensor contact is open when pressurized and closed when the
enclosure is no pressurized.
enclosure is no pressurized.
Sensor will activate (open) at .5psi. and (close) at 1 psi.
Push button switch
Green LED
Plastic Cover