Misbehaving C-Bus Shutter relays?

Discussion in 'C-Bus Wired Hardware' started by Deano, Mar 4, 2013.

  1. Deano

    Deano

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    Hey everyone

    Have some recent C-Bus shutter relays which seem to be misbehaving.
    Have programmed a Saturn switch to provide 1-button toggle control for a blind. I'm findind that on changing direction of a moving blind, the shutter relay will revert to its previous state without any interaction from the user.

    Eg. Blind Closing. Push button to stop, push again to raise, then a few seconds later whilst the blind is travelling upwards to open, the shutter relay automatically changes direction and sends the blind downwards again. The more times you change direction the more it seems to happen, as if C-Bus is buffering commands?? Fail-safe delay is 30secs-ish.
    Also wondering if the change-over delay would affect anything.

    Have seen this on a couple of projects now and was wondering if anyone else had seen something similar? Have programmed a tonne of these previously and haven't remembered seeing this beforeI.

    Any tips, fixes, settings etc. would be much appreciated.
     
    Deano, Mar 4, 2013
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  2. Deano

    NickD Moderator

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    It sounds as if it might be a state correction happening. This happens when two output units disagree on the state of a group, then last input unit to set that group will jump in and sort it out. With the shutter relays, the single button operation uses level translation mode and a level of 98% though, so I would expect if this were happening that the result would always be that it opens.

    Do you have any other output units (dimmers, relays, or logic channels in either of those) programmed to use the same group address as the shutter relays?

    The only other thing I can suggest is to download the Diagnostic Utility (or if you have a CTouch - look at the log) to see what's going on on the bus when this is happening (ie if something is telling it do do this, or if there are lots of retries etc).

    Nick
     
    Last edited by a moderator: Mar 5, 2013
    NickD, Mar 5, 2013
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