Retro fit timer and PIR

[cdisney]

Hi all

I am in the middle of replacing lights in a warehouse/office to LED panels, LED high bays etc. The client has asked for an area if possible to be on a timer between 7am and 7pm and then a PIR for the rest of time. It is all ran in with singles in lightning trunking.
I know the easiest way would be to put them on a occupancy sensor with daylight function but didn't know if there was a product on the market which would satisfy client?

Any ideas chaps?

Thanks

 

[westward10]

Is this area the warehouse or offices.

 

[cdisney]

Is this area the warehouse or offices.

It is low level in the warehouse

 

[westward10]

Below a mezzanine.

 

[cdisney]

Below a mezzanine.

It is on top of a mezzanine floor

 

[Richard Burns]

I would just install a timer and a PIR sensor (or sensors) in parallel so the timer holds them on for the required time and the PIR sensor works the rest of the time.
But do have a risk assessment in place to ensure the sensor can cover the areas required when necessary.

 

[westward10]

If it is a large area you can put them in parallel for better coverage but beware off their maximum switching capacity. Not sure why you need a separate timer the presence detector should incorporate a timer.

 

[HandySparks]

Might be worth asking why they want that arrangement. Maybe the area isn't much used, so the lights would turn off occasionally. Setting the occupancy sensor timer to maximum might be enough to keep them on.

 

[Toneyz]

why do they want them on all the time between 7am and 7pm ?

 

[cdisney]

why do they want them on all the time between 7am and 7pm ?

No idea was just asked if it was possible. More than likely it is due to them working between those hours in that area.

 

[TomSparkman]

Maybe someone occasionally comes in after hours i.e not between 7am and 7pm. Therefore the PIR would come in to play.
Suppose just a manual override would suffice unless this person is prone to not switching lights off!

 

[Toneyz]

I assume that there is no windows and lights are not dimmable I would just install PIR's

 

[static zap]

Night security watch , cameras ?
(doing his job for him , ish !)
Just PIR , or dual ?