LED Spot Light

[Fredo]

I have a new small LED spot light which sits on the floor and shines up into a plant in my livingroom. I plugged the spot light into a ApplianceLinc 2456S3 ver4.9. My ISY turns it on/off without a problem but when turned off, the spot light flashes on/off every 3-4 seconds. Any idea what is causing this?

[LeeG]

Add an additional load to the ApplianceLinc. The small amount of current used for load sensing is enough to cause what you are seeing. A small wall wart, night light, something like that.

[Brian H]

I sure wish the forum would warn of another post as we are posting.

Anyway LeeG beat me again.

So some of this is a duplicate of data.

 

Local Control Sensing Current can frequently cause low current loads like LED and some CFLs to pulse and flicker when the ApplianceLinc is Off.

As a test for this put a small 4 watt incandescent night light on the output with the LED light.

If it stops pulsing. It is the Local Control Sensing Circuit.

Even when the ApplianceLinc has sensing set to Off. The current is still there and just ignored.

 

A 33K Ohm one or more watt resistor can also be used to swamp the sensing current.

 

If it is a hardware revision of 4.0 or higher. It also has a small amount of current through the snubber network, across the open relay contacts. The lower than 4.0 versions didn't have a snubber in them.

[LeeG]

No problem Brian. Better to have multiple responses than none at all. Besides you have some information about using a resister I did not think about. The forum use to show the new post when the Submit button is used requiring a second Submit. Not sure that is working currently. I lost my email alerts when a post is done so there are a few kinks to work out.

[apostolakisl]

I sure wish the forum would warn of another post as we are posting.

Anyway LeeG beat me again.

So some of this is a duplicate of data.

 

Local Control Sensing Current can frequently cause low current loads like LED and some CFLs to pulse and flicker when the ApplianceLinc is Off.

As a test for this put a small 4 watt incandescent night light on the output with the LED light.

If it stops pulsing. It is the Local Control Sensing Circuit.

Even when the ApplianceLinc has sensing set to Off. The current is still there and just ignored.

 

A 33K Ohm one or more watt resistor can also be used to swamp the sensing current.

 

If it is a hardware revision of 4.0 or higher. It also has a small amount of current through the snubber network, across the open relay contacts. The lower than 4.0 versions didn't have a snubber in them.

 

Specifically, how I used the resistor solution is as follows. I used some old christmas tree lights and cut the wire off about 1/4 inch from the passthrough plug. Then I soldered on the resistor and sealed it up with some heat shrink insulation. I made a couple to have around Then you plug that into the lamp linc and then whatever else you want. It pretty much is the closest thing to an invisible cure for this problem without cutting into your actual load device.