Dwyer OSC-200 User Manual

Bulletin H-21-OSC

Model OSC-200 Omnidirectional Occupancy Sensor

Specifications - Installation and Operating Instructions

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The Model OSC-200 Omnidirectional Occupancy
Sensor automatically controls a HVAC ventilation system.

A spherical Fresnel lens provides a 360° detection zone
with the use of infrared technology. The integrated dual
delay processor saves energy by eliminating false
activation due to short-term occupancies. The Model
OSC-200 is designed to be ceiling mounted.

INSTALLATION

Do not install where the detector is exposed to direct
sunlight or directly above strong sources of heat.

Do not install in areas that have any obstruction
(plants, large pieces of furniture, curtains, etc.) which
may block the detection.

SPECIFICATIONS
Infrared Sensor: Dual element.
Range: 34.4 ft (10.5 m) Diameter at 13.8 ft (4.2 m) mount

height.

Detectable Speed: 0.33 to 9.8 ft/sec (0.1 to 3.0 m/sec).
Control Output Rating: SPDT, 0.2A at 30 VDC.
Ambient Operating Temperature: -4 to 140°F (-20 to 60°C).
Power Consumption: Standby: 5 mA, Operating: 18 mA.
Mounting Height: 7.9 to 13.8 ft (2.4 to 4.2 m).
Power Requirements: 22 to 26 VAC/DC.
Weight: 2.4 oz (68 g).
Agency Approvals: CE.

DWYER INSTRUMENTS, INC.

Phone: [phone] www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: [phone] e-mail: [e-mail]

MOUNTING

TOP VIEW

SIDE VIEW

360°

TERMINAL
BLOCKS

OFF DELAY

INFRARED SENSOR
(DON’T TOUCH!!)

ON DELAY

CORNER
KNOCKOUT

COVER LOCKING
SCREW

FRESNEL LENS

TAB

KNOCKOUT HOLES
FOR MOUNTING

NC COM NO

FAN COIL CONTROLLER

24 VAC/DC

24V

ON/OFF INPUT

TERMINAL
BLOCKS

OFF DELAY

INFRARED SENSOR
(DON’T TOUCH!!)

COVER LOCKING
SCREW

FRESNEL LENS

KNOCKOUT HOLES
FOR MOUNTING

ON DELAY

CORNER
KNOCKOUT

TAB

The OSC-200 is designed to be recess or surface
mounted to a ceiling.

Step 1: Install Base Unit

• Determine the location of the sensor according to the
detection pattern shown in Figure 1a.

• Remove the cover screw to open the sensor housing
as shown in Figure 1b.

• Remove the circuit board by bending the tab outward
(Figure 1b.)

• Screw the base of the sensor housing to the ceiling
through the knockout holes (Figure 1b.)

Step 2: Wiring

• Feed the cable through one of the corner knockout
holes (Figure 1b.)

• Reinsert the circuit board.

• Turn the screw for each terminal counterclockwise
(Figure 1b.)

• Connect the cable to the corresponding terminals as
shown in Figure 2.

Figure 2

Wiring the Sensor

Figure 1a

Location and Installation of the Sensor

Step 3: Walk Test

Before beginning test, make certain that the On and Off
Delay jumpers (located on the circuit board) are
connected in the “A” positions as shown in Figure 3. If
they are not, follow the procedure under the section titled
On/Off Delay Settings to rearrange the jumpers to location
“A.” Replace the sensor housing and tighten screw.

Figure 1b

Location and Installation of the Sensor

Figure 3