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High protection against ambient light: To prevent the motion detector from switching to Night 
mode is there is brief shadow or Day mode if there is brief light, the Day/Night and Night/Day 
switchover takes place only after 10 seconds. 

Behaviour in case of a mains failure 

Less than 0.2 seconds: the old switching position is restored after mains return. 

0.2 seconds to approx. 2 seconds: when the power returns, the lighting is switched on 
again for the run-on time. 

Longer than 2 seconds: when the power returns, the motion detector carries out a self test 
for approx. 90 seconds. The lighting is switched on during the self test. Then the lighting 
switches off briefly, and then on again for the length of the run-on time.  

In the Continuous on and Continuous off operating modes, the light is switched on or off 
after the self test. 

A power failure of longer than 2 seconds causes the loss of the switch-on brightness and 
the brightness threshold, saved via the Teach function. 

4 Operation 

Switch on the light via extension 

A 2-wire extension or an installation button is connected. 

Press button for less than 0,4 seconds. 
The Light is switched on independently of the brightness for the run-on time. 

If the run-on time setting dial (5) is set to 

M

, Short-time operation, then the light is 

switched on for approx. 0.5 seconds, even if the button is pressed for longer. 

Switch light on with minimum brightness 

Motion detector cover is combined with a dimmer insert.  
A 2-wire extension is connected. 
Light is switched off 

Press button at bottom for longer than 0.4 seconds. 
Light is switched on at minimum brightness and stays at this brightness for as long as 
motion is detected. 

Operate with 2-wire extension 

Motion detector cover is combined with a dimmer insert.  
Light is switched on. 

Press top button for a long time. 
The light gets brighter up to maximum brightness. 

Long press on bottom of button. 
Light gets darker to minimum brightness. 

Manual switch-on is not possible. 

Save switch-on brightness 

The light is switched to this brightness value on each switch-on. In the as-delivered state, the 
switch-on brightness is set to the maximum brightness. 
Motion detector cover is combined with a dimmer insert.  
A 2-wire extension is connected. 

Set light to the required brightness. 

Press the extension for at least 3 seconds. 
For confirmation the lighting switches off briefly and then on again to the saved switch-on 
brightness. 

The saved switch-on brightness is deleted after a power failure. 

Seite 3/10 

22.07.2010 

82540231 
97-82640-201 

BLC 
BLC motion detector comfort 1.1 m 

Summary of Contents for BLC 1784 Series

Page 1: ...ime take into account all circuit breakers that supply dangerous voltage to the device or load Danger of electric shock Device is not suitable for disconnection from supply voltage The load is not ele...

Page 2: ...2 wire or installation button With the dimmer insert it is possible to change the brightness using a 2 wire extension insert Switch on brightness can be saved with the dimmer insert With the dimmer in...

Page 3: ...n on time i If the run on time setting dial 5 is set to M Short time operation then the light is switched on for approx 0 5 seconds even if the button is pressed for longer Switch light on with minimu...

Page 4: ...ith Continuous off switch on via the extension is not possible Setting the Continuous on operating mode o Switch the operating mode switch to the I position The lighting remains permanently switched o...

Page 5: ...6 is then no longer evaluated Additional saving operations overwrite the previous value i A power failure of more than 2 seconds or removing the cover from the insert causes the loss of the saved brig...

Page 6: ...s 5 1 Fitting and electrical connection DANGER Electrical shock when live parts are touched Electrical shocks can be fatal Before carrying out work on the device or load disengage all the correspondin...

Page 7: ...pand the detection area connect a 3 wire extension insert with motion detector cover see instructions for 3 wire extension insert The motion detector of the main unit also evaluated recorded motions o...

Page 8: ...g the detection area or the sensitivity reduced o Measure the detection area If the detection area is too large limit the detection area see Limiting the detection area If the detection area is too sm...

Page 9: ...is used then dimming will take place after the run on time has elapsed and the lighting will switch off after approx 30 seconds If during dimming movement is detected then the motion detector switche...

Page 10: ...the detection area Cause Interference sources in the detection area e g heating ventilation cooling light bulbs Reduce the detection area with a cover panel or reduce the sensitivity with the Sens adj...

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