Microwave Motion Detector

The PS-RS02 sensor is an active motion detector with adjustable sensitivity, daylight detection and ‘On’ period. The detector emits high-frequency electro-magnetic energy (5.8GHz) and receives the echo from movements in the detection zone. An internal microprocessor then triggers and connects the load to the supply (‘On’ command).

The advantage of Microwave detectors is that movement can be detected at quite long distances (up to 10m) and is possible through thin metal and typical materials used in buildings (office partitions, etc.).

Microwave detectors are ideal for switching lighting loads and can be used for switching lights on or (by using dimming ballasts) from a dimmed level to full output when someone enters an area.

While there is movement in the area, the sensor will hold the load on. The sensor can be adjusted so that when movement stops the load will switch off (or return to dimmed level) after 8 seconds to 12 minutes.

The range is the distance of the circular detection zone produced on the ground in an open area adjacent to where the PS-RS02 sensor is mounted.

Minimum range – (approx. 2m) – is achieved with the sensitivity control turned fully anticlockwise.

Maximum range – (approx. 10m) – is set with the control turned full clockwise.

Note: The above detection distances are based on a person who is between 1.6m/1.7m tall moving at a speed of 1.0 – 1.5m/sec. Detection range will differ depending on the height and stature of a person moving within the detection zone and reduced if detecting movement through building structures (glass, partitions, etc).

Time ‘On’ setting

The luminaire can be set to stay ON for any period of time between approx. 8sec (control turned fully anticlockwise) and a maximum of 12min (control turned fully clockwise).

Any movement detected before the set time has elapsed will re-start the timer therefore holding the lighting on.

Note: After the light switches OFF, it takes approx. 1 sec before the sensor will to start detecting movement again.

Daylight control setting

The light response threshold can be adjusted from approx. 2Lux to 2000Lux. Rotate the control fully anti-clockwise to select dusk-to-dawn operation at about 2 lux. Turn it fully clockwise to select daylight operation at about 2000lux.

Set-up/walk test

Set the Time ‘on’ control to minimum (fully anticlockwise) and the Daylight control to maximum (fully clockwise) to adjust the sensitivity/range. Adjust the Sensitivity control, walk in the required detection area then re-adjust until the area is correctly monitored. Then adjust the daylight control to suit an appropriate ambient light level and finally set the ?on? time

(NB: with fluorescent lamps it is advisable to let them operate for approx. 10minutes from each start).

Note: Adjust the rotational controls with care because the three potentiometers are connected directly to a PCB.

The ‘stops’ built into each of these components can easily be damaged.

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