IES-VE User Forum

Hey guys,

I'm a student (rookie) using VE for my thesis study into DSF's. I want to use a sensor in each room to dim the lighting.

I have placed sensors in each room and having read the guide, I developed the formula of RAMP(e1,0,1,320,0.2) for dimming at 320lux down towards 20%.

My query is do I replace 'e1' with 'e2' for the second room (with the second sensor) or does it remain as 'e1', and the one is referring to the first sensor in the selected room? I am thinking it remains as 'e1' as an error occurs when I try to replace it with 'e2'.

Cheers for the help.

Sensor e2 is not available in the software so you need to use e1.

If you want to control lighting based on lux levels in a particular space then you can reference the room number using e1(Room number).

Here is where it gets confusing though as the number you reference in the formula needs to be the room number in ModelIT+1. This is because room numbers in ModelIT start at zero.

So ramp(e1(5), 5, 1.0, 50, 0.2) would be reading the illuminance from zone number 4 in ModelIT.

Thanks for confirming that.

The only issue I have now is that I have four buildings each with 240 rooms (24 rooms/floor, 10 floors). Having to make a new daily and weekly profile referencing each sensor is an extremely lengthy process. Is there any method (shortcut) of doing this quickly?

If not I'll just have a single reference floor per building.