Page 2 P/N 48674D
© 2002 Detection Systems, Inc. All rights reserved.
OD850 Installation Instructions
NOTE:
This detector features a Fresnel lens to focus infrared
energy onto a sensor and an offset Look Down lens that
adds a Look Down Zone. The coverage pattern of these
lenses is shown in Figure 1.
•
The surface must be solid and vibration-free.
•
Mounting height range is 7 to 9 feet (2.1 to 2.7 m). Recommended
mounting height is 7 feet ( 2.1 m).
NOTE:
Mounting height recommendations are based on level
surfaces. If the terrain is not level, adjust the mounting
height and detector angle to provide the best coverage.
Refer to the coverage patterns and Section 8.0.
•
Choose from the available mounting methods:
4.1 surface mount using a single-gang electrical box
4.2 surface mount without an electrical box
4.3 pole mount
4.4 bracket mount using an optional bracket
NOTE:
The Mounting Plate has a waterproof label (Figure 3j)
which must not be removed. When mounting, simply drive
the mounting screws through the label or punch through
the label as needed for wiring.
4.1
Surface Mount Using a Single-Gang Electrical Box
•
Install a single-gang electrical box at the desired detector
location.
•
Attach the mounting plate (Figure 2a) to the single-gang box with
appropriate screws.
4.2
Surface Mount Without an Electrical Box
•
Select an appropriate location.
•
Using the Mounting Plate as a template, mark the location of the
mounting screws and the wire run (see 5.0 Wiring).
•
Attach the Mounting Plate (Figure 3b) to the wall with appropriate
screws.
4.3
Pole Mount Using the Supplied Bracket
NOTE:
Do not mount to fence posts that may sway in the wind.
•
Attach the supplied Pole Bracket to the Mounting Plate (Figure
2b) using appropriate screws and mounting holes.
•
Use hose clamps (two recommended; not supplied) large
enough to fit around the pole to fasten the detector mounting
plate to the pole.
4.4
Surface Mount Using the Supplied Bracket or an
Optional Bracket
•
Follow the instructions that come with the bracket to attach the
bracket to the surface in an appropriate location.
•
If using the supplied B335 Swivel Mount Bracket, connect the
bracket to the Mounting Plate as indicated in Figure 2c.
•
If using the optional B328 Swivel Mount Bracket, connect the
bracket to the Mounting Plate as indicated in Figure 2d.
•
If using the optional B338 Ceiling Mount, connect the bracket to
the Mounting Plate as indicated in Figure 2e.
5.0 Wiring
WARNING: Only apply power after all connections have been
made and inspected.
•
Connect wiring per the following Terminal Descriptions (Figure
3e):
5.1
Terminal Descriptions
• 1 (-) & 2 (+): Input Power (12 VDC). Use no smaller than #22
AWG (0.8 mm) wire pair.
• 3 (NC), 4 (C): Alarm Relay Contacts. Form "A" (Normally Closed,
supervised) alarm contact opens on alarm. Contacts rated
125 mA max., 25 VDC max.
• 5 & 6: Normally Closed Tamper Contacts, rated 125 mA max.,
25 VDC max.
• 7 (NC), 8 (C) & 9 (NO): Timed Alarm Relay Contacts. One
Normally Closed and one Normally Open contact with a
Common. Contacts rated 125 mA max., 25 VDC max.
NOTE:
Do not connect any terminal to any power supply providing
more than 25 VDC.
6.0 Settings and Adjustments
6.1
DIP Switches
The DIP Switches (Figure 3h) are used to specify a number of
settings as follows:
6.2 LED Disable (SW0; Factory Setting ON)
This switch setting determines whether or not the LED will light
during alarm situations. This switch should be ON (LED enabled)
during walk testing, but may be OFF (LED disabled) during normal
detector operation to save power.
The following chart lists the conditions indicated by the LED:
LED Indicator
Condition
Steady
PIR alarm
Green
Flashing
Microwave alarm
Steady
Dual Alarm (both technologies)
Red
Flashing
Power-up
6.3 PIR Sensitivity (SW1; Factory Setting ON)
The detector features two user-selectable PIR Sensitivity settings
as follows:
•
Standard Sensitivity: Recommended setting for maximum false
alarm immunity. Tolerates environment extremes on this setting.
•
Intermediate Sensitivity: Recommended setting for any location
where an intruder is expected to cover only a small portion of the
protected area. Tolerates normal environments on this setting.
This setting will improve your intruder catch performance.
The appropriate switch settings for these sensitivities are:
SW1
PIR Sensitivity
OFF
Intermediate
ON
Standard
6.4 Timed Relay Outputs (SW2 & SW3; Factory Setting both OFF)
The detector has a Form "C," unsupervised, timed relay contact that
transfers one second after an alarm and follows a user-selectable
timer. The time will expire at the set time after the last alarm (it
resets on each new alarm). For information on wiring this contact,
see 5.0 Wiring. To select the Relay Activation Time, set the
switches as follows:
SW3
SW4
Relay Activation Time
OFF
OFF
2 seconds
ON
OFF
1 minute
OFF
ON
5 minutes
ON
ON
10 minutes
6.5 AND/OR Mode (SW4; Factory Setting ON)
This setting specifies whether the detector alarms in the AND
mode (when both technologies simultaneously sense an alarm
condition) or in the OR mode (when either the PIR or Microwave
