5504 Change over relay question

Hi

I have some Silent Gliss curtain rails connected to a couple of 5504's. These have three wires which connecting the common to either of the other two would close/open the curtains, so the 5504 seemed perfect.

But since setting them up they have become extremely unreliable in that they seemed to ignore the connection every few days. Pull the plug out and push it back and it would see the connection and move accordingly.

I have spoken with a technician who knows these tracks extremely well and he suggested that the changeover is happening so fast that the motor is seeing both open and close connected at the same time. So he came up with a solution with a couple of capacitors to slow down the swapping and over the past week this has been 100% reliable.

So my question is before I go out and purchase more capacitors etc to make permanent solutions for all by motors, is there a simpler method with the unit itself, have had a look for something similar to the L5501 shutter relay's delay feature but could not see anything.

Thanks
Phil

 

There is no mechanism to slow down the transition from one of the relays positions to the other, so the change-over from N/O to N/C happens in a fraction of a second regardless.

The Shutter Relay units are specifically targetted at this sort of thing, so they do the job better, however I gather that since you're talking about installing capacitors and the like you'd rather not spend more on another product.

If you've got some spare relay channels in your install it would be possible to connect the common connection from your blind motors through this, and then on to the change-over relay. You could then program the system so that the conventional relay opens, the change-over relay switches position, and then the regular relay closes again. This is best done in logic so you'd need to have a logic engine capable unit in your install too.