Is this possible?
- Thread starter veedee
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Yes, you would presumably need two timers or a two channel timer, but why would you want the PIR to control the light only between 11 and 4 and not other times when it is dark?
Or fit a gjd lighting system , you set an override on and off timer , look at digi zone controller you will need 3 items keypad/ controller , 2 or 4 way mains switcher and a detector ..
I did this some 40 years ago and used a central heating timeswitch, however they they wanted 6-11 on, 11-4, PIR, 4-8 on (using your times). It was very, very easy to wire.
Any 2 channel electronic time switch with individually settable times will do the job with ease.
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And what happens at 4am? Light must shut off until 11pm?
Would it not be acceptable to have the lights running on dusk to dawn PIR with a time switch to have them on 6-11pm?
I know nothing about timer switches but when i googled this image came up
is this what i need?
Screwfix Link
Until 6PM when the light continuously runs till 11PM
is this what i need?
Screwfix Link
The idea is around 4AM the sun is coming up so PIR is no longer needed.
Until 6PM when the light continuously runs till 11PM
Yes, that is what I am after.
I need that PIR motion detection from 11PM till dawn.
Well, not now but even when that is true, if it is daylight the PIR won't work, will it? So you don't need a timer for it.
Ok.
What is?
So, no timer necessary for the PIR?
Reading the last few messages I think there may be some confusion.
If you use a PIR including light sensor (in other words it will only be active during the hours of darkness) that will give dusk to dawn PIR operation.
THEN
a single channel timeswitch can be added to override the PIR for your 6-10pm on period.
Depending on the power load of the lights an immersion heater or central heating timeswitch may do.
EDIT: Thinking further, if you use seperate light sensor and PIR it can be configured with the timeswitch set for say 2-11pm to override the PIR but but the light sensor would prevent the light working until dusk.
Earths not shown for clarity
If you use a PIR including light sensor (in other words it will only be active during the hours of darkness) that will give dusk to dawn PIR operation.
THEN
a single channel timeswitch can be added to override the PIR for your 6-10pm on period.
Depending on the power load of the lights an immersion heater or central heating timeswitch may do.
EDIT: Thinking further, if you use seperate light sensor and PIR it can be configured with the timeswitch set for say 2-11pm to override the PIR but but the light sensor would prevent the light working until dusk.
Earths not shown for clarity
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I have a smart bulb with the option dusk to dawn with an off time settable, but only some of my bulbs will do that, and the feature is not advertised, you only find out when using the app, it comes under biorhythm on my TCP bulbs only. Sure other makes do have the option, but not all.
But then you can't have PIR control as well.
The problem I find with smart bulbs is you don't know what they can do until you buy them and down load the app.
I had something of the same idea a while back and asked a smiliar question here. Advice was for a Steinel 3000 Vario.
Light will come on at dusk and a timer can be set to turn the lamp off at a certain (approximate) time. This would do the job of the light sensor and timer in the diagram by @SUNRAY
The Steinel switches a lamp directly - not sure whether it switches L or N side so it is not a matter of just shorting the output using a PIR - so would need a relay
Light will come on at dusk and a timer can be set to turn the lamp off at a certain (approximate) time. This would do the job of the light sensor and timer in the diagram by @SUNRAY
The Steinel switches a lamp directly - not sure whether it switches L or N side so it is not a matter of just shorting the output using a PIR - so would need a relay
At the present time we don't know much about this installation, other than the times.
For all we know it could be a factory complex with 100 floodlamps or someones landing light.
AFAIA Most PIR and light sensor seperates (certainly every unit I've been aware of the switching device) use a relay and further many of them have had a volt free contact (but not all).
I have encountered neutral switching (especially with buit-in PIR and imports from USA) and the simple answer is usually to reverse L & N and fit a lable to that effect.
For all we know it could be a factory complex with 100 floodlamps or someones landing light.
I wonder if the time requirement is for a commercial reason, such as a chip shop. In which case we may all be barking up the wrong tree.
AFAIA Most PIR and light sensor seperates (certainly every unit I've been aware of the switching device) use a relay and further many of them have had a volt free contact (but not all).
I have encountered neutral switching (especially with buit-in PIR and imports from USA) and the simple answer is usually to reverse L & N and fit a lable to that effect.
It's from Veedee.
I have had a nother look at the instructions as it was a while since I last looked - L' seems to be switched live. I would hazard a guess at relay rather than semiconductor switching
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