One button blind control

All easy

Hi all, came to this tread quite late.

elero is having a relay that can be hooked up directly to the c-bus relay, only one C-bus output relay required to be simply programmed in "bell press" mode.
The relay works this way:

Activating the c-bus relay the elero relay goes through the sequence of:

up - stop - down - stop - up - .....

So no delay time, no worry about interlocking etc.
The only downturn:
The elero relay doesn't know the position of the motor.
So if the motor has been run up (elero relay is still in "up" direction, motor is switched off by it's internal limit switch) the user needs to press the button 2 times. One switches the relay to stop position, the other will start running the blind down. (But I assume it to be the same for a number of solutions suggestions above)

If someone is interested, just send me a private message for more info or price.

 

Roller-shutter (blind) controls.

Been absent from the forums for a while, couldn't help but butt in on this one.

Recently installed a number of electric roller shutters here. NON-intelligent ones, just 4 wires - earth, neutral, "up" and "down". Usually wired with a 3-position switch for manual operation.

I've put a 12 VF relay module in, with 2 outputs per shutter. Bad lad that I am, I didn't use changeover relays but I do have no "all-on" or area enabled.

I have a "shutters" screen on the B&W c-touch, which has (for each shutter) UP, DOWN and SHADE settings. (large up and down arrows, and a square in between like a "stop"). An indicator DOT shows current position of each.

In each room, a SINGLE key on the existing NEOs is a shutter "UP"/"DOWN" select.

I used a scenes with timers, the "UP" forces OFF the "DOWN" relay, and drives the blind up for 30 seconds (long enough for the blind to get up), and "DOWN" does the opposite. "Partial" makes the assumption the blind is down (I was going to code logic to do it, but in our house it's not necessary, and I don't yet have a PAC), and is just like an "UP" but with only a short drive time to put the blind into its non-locked mode where it lets through about 10% light between the slats.

The NEO simply turns ON or OFF a variable that triggers the UP or DOWN scenes, so all the indicators (and the touch-screen) displays all display the correct shutter position.

Couldn't see any need for a "stop" in our situation as we've never wanted the shutters in anything other than the 3 positions described.

 

To: RossWheeler

Hi,

just a few notes on above post. Not sure how the exact setup is done, there might be no problem, but the following should be observed as well:

- What happens if a C-bus relay gets stuck?
No electrical interlocking, therefore this event will damage the motor... Hope that never happens.
Workaround could be just a cheap switchover relay to achieve the electrical interlocking (obviously only needed on one direction).
Fitting 12 of these is still cheaper than replacing a motor...

- Is there a switchover delay?
Let's say the customer runs the shutter up, than decides otherwise and presses the down button (or a timer event kicks in). If there is no delay time between up and down, the motor(s) will be damaged in the long run.

- On power failure: Are these relays going trough a check routine? (Activating the relays to check their status/ function)
If so, power would be on on both directions of the motor, motor will be damaged.
Make sure to switch off this feature in C-bus for these relais!


Hope this avoids some damaged motors out there