Legrand OSR300S User Manual

OSR300S

120/277VAC

Dual Relay PIR Wall Switch

Specifications

Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120/277VAC, 50/60Hz

Load Limits for each relay:

@120 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0-800W ballast

@277 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0-1200W ballast

Load Type Compatibility:

Incandescent, fluorescent, magnetic or electronic ballast

Horsepower Rating (each relay) . . . . . . . . . . . . . . . . . . .1/6 HP

Time Delay Adjustment . . . . . . . . . . . . . . . . . . . . .5 to 30 minutes

Walk-Through Mode . . . .3 minutes if no activity after 30 sec.

Test Mode .15 sec. upon initial power up or DIP switch reset

PIR Sensitivity Adjustment . . . . . . . . . . . .Low or High/Automatic

Light Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . .8fc to 180+fc

Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Selectable Audible

Installation Instructions

US Patents: 4,787,722

4,874,962 • 5,124,566

Des 343,386

Syracuse, NY 13221

800.223.4185

UNIT DESCRIPTION AND OPERATION

The OSR300S is a passive infrared wall switch that turns lighting on and off
based on occupancy and ambient light levels. SmartSet™ technology allows the
sensor to be installed without any adjustments and automatically adjusts it to
the usage patterns in the space. Alternate operating modes, selected by DIP
switch settings, can be combined to create the ideal custom control.

The OSR300S contains two relays. Dual buttons on the front of the OSR300S
allow the user to control one or two loads independently. Pressing an ON/OFF
button toggles the state of the corresponding relay, turning the load on if it is
currently off, or off if it is currently on. If no motion is detected during the time
delay that is in effect, the load will turn off.

The OSR300S also contains a light level sensor that, when enabled, operates
on the secondary relay. If adequate daylight is present, the sensor holds the
secondary load off until light levels drop, even when the controlled area is
occupied. Users can override this function by blocking the light coming into the
sensor by placing their hand over the sensor lens until the load comes on. The
load will then remain on until the space is unoccupied.

Turning The Load On

The relays are programmed independently for either Auto On or Manual On.
In either mode, the load can be turned on or off using the ON/OFF button.

Auto On Load turns on and off automatically based on occupancy.

Manual On Occupants must turn on the load by pressing the ON/OFF but-

If the load is turned off manually, automatic-on is reenabled
when no motion is detected for five minutes. This prevents the
load from being turned on after it was deliberately turned off.

ton. The sensor keeps the load on until no motion is detected
for the selected time delay. There is a 30 second reset delay. If
motion is detected during this time, the sensor turns the load
back on automatically. After the reset delay time has elapsed,
the ON/OFF button must be pressed to turn on the load.

Time Delays

The OSR300S holds the load on until no motion is detected for the selected
time delay. You select either SmartSet or a Fixed time delay using DIP switch
settings. The sensor automatically sets the time delay when SmartSet is
enabled; with the fixed time delay settings you select a time delay between
5 to 30 minutes, and whether the Walk-Through mode is included.

Both relays use the same delay, unless a delayed disconnect is enabled for relay
2 using the Delay Relay 2 Disconnect feature. This delayed disconnect feature is
useful in applications where you want both loads to turn off automatically, but
want relay 2 to stay on longer, such as when running an exhaust fan after the
lights have shut off.

Call 800.223.4185 for Technical Support

SmartSet™ Records typical occupancy patterns. Using this history
Time Delays (which is constantly updated), it chooses an optimal

Fixed Time Delay DIP switch selections provide fixed time delays of

Walk-Through Mode Use for rooms that have frequent walk-through traffic

Test Mode To confirm proper operation of the sensor, a short
Time Delay initial time delay of 15 seconds is set as the default

Delay Relay 2 Both relays use the same Time Delay, unless DIP
Disconnect switch #4 is turned on, enabling a delayed disconnect

Sensitivity Adjustment

High/SmartSet™ The OSR300S monitors the controlled environment

Low Fixed sensitivity mode, reduces detection range.

time delay from two minutes (if the space is usually
vacant) up to 30 minutes (if the space gets heavy
usage). SmartSet behavior starts immediately, and is
refined continually as history is collected.

5, 10, 15, 20 or 30 minutes.

(i.e., room that accepts mail deliveries). The OSR300S
turns the load off three minutes after the area is
initially occupied, if no motion is detected after the
first 30 seconds. If motion continues beyond the first
30 seconds, the SmartSet or Fixed time delay applies.

(SmartSet/Test) mode. This Test Mode cancels
automatically after five minutes, or if a fixed time
delay is selected. To reenable the Test Mode for an
additional five minutes, change the time delay from
any fixed amount to the SmartSet/Test setting.

for relay 2. When the delayed disconnect is enabled,
relay 2 turns off 10 minutes after relay 1 and during
Test Mode, relay 2 turns off 10 seconds after relay 1.

and automatically selects the maximum sensitivity
setting that will provide reliable operation without
false detection. This setting is constantly updated.

Alerts

To warn an occupant that the load is about to be turned off, the OSR300S
provides audible alerts.

Audible Alerts Sensor "chirps" twice – at one minute and at

No Alerts No warning is provided.

30 seconds before turn-off. A distinct alert sounds
10 seconds before the lights go off.

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