Dwyer instruments, inc – Dwyer OSW-100 User Manual

Page 4

Printed in U.S.A. 9/08

FR# R6-443398-00

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000

www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.

Fax: 219/872-9057

e-mail: [email protected]

OPERATION MODES

The OSW-100 Wall Mount Occupancy Sensor utilizes
several operation modes to eliminate false readings and
conserve energy.

STANDBY

DETECTION

RELAY ON

DELAY

C. 1-MINUITE

WAITING

DETECTION

RELAY OFF

DELAY

(RELAY OUTPUT)

Figure 5

Standby Mode
Before any movement is being sensed, the sensor is in
standby mode.

When the sensor detects occupancy, the LED light turns on
and the sensor switches to Relay On Delay Mode.

Relay On Delay Mode
This adjustable mode allows the user to choose the time
delay before the unit reports that a space is occupied.

The Relay On Delay Mode allows for energy conservation by
bypassing short-term or faulty occupancies. It is followed by
a secondary one minute warning delay.

1-Minute Warning Mode
During this mode, the sensor searches for any movement
for one minute past the Relay On Delay Mode.

If occupancy is detected at any point within that one
minute, the output device is activated and the sensor enters
Relay Off Delay Mode.

If occupancy is not detected in that one-minute time frame,
the sensor enters back into standby mode.

Relay Off Delay Mode
During this mode, the sensor’s output is activated for a
preset period of time.

Once this preset time interval is up, the output device
powers off. However, the relay off delay timer will reset with
each motion detection.

This Relay Off Delay Mode allows for energy conservation
by eliminating unnecessary running of the HVAC system.

Occupancy detection may be affected if the unit is operated
within radio frequency electromagnetic field strength of
approximately 3 volts per meter, but the performance of the
instrument will not be permanently affected.

Storage and Cleaning
The sensor lens is the most delicate part of the Occupancy
Sensor. The lens should be kept clean at all times, care
should be taken when cleaning the lens using only a soft
cloth or cotton swab with water or medical alcohol. Allow
the lens to fully dry before using the sensor. The sensor
should be installed or stored in an area of room temperature
between -4 and 140ºF (-20 to 60ºC).

MAINTENANCE
After final installation of the unit, no routine maintenance is
required. The Model OSW-100 is not field serviceable and
should be returned if repair is needed (field repair should not
be attempted and may void warranty). Be sure to include a
brief description of the problem plus any relevant
application notes. Contact customer service to receive a
return goods authorization number before shipping.

NOTICE

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