Lights randomly turn off

I have a issue with 2 groups of lights.

All lights are dali fittings 1x28 T5
All are controlled by pir time out is set to 45mins up from 20.

The 2 groups are separate groups on 2 different dali lines.
And different gatways.


The lights will randomly turn off sometimes 2 times a day sometimes 3 it can be a week before it happens then nothing for a few days or the next day then happens.
The above is from the customers observations.
Sometimes they will come back on other times they require an all off to be triggered.
No apparent patterns to it.

I have checked sensors all working
I have checked each dali line both scan fine and the voltage is normal and within the expected range.
I have checked all the cbus power supplies on the network all are within normal range and 0.1v of each other
Network is sitting at 1750ma more than enough.
Yes clock is working and burden enabled.

Side note this network is part of 5
Each has its own bridge and own touch screen.
Each network has its own application

Not sure of what would be causing this as I have checked and tested what comes to mind.
Starting to feel like I may have missed something simple or I may need to look at swapping parts out.

 

You mentioned there are touchscreens on the network(s). Are they CTC (6.4") units? if so, use the logging on the touchscreen to track what's triggering the commands. Used this myself many times when unexplained things happen.

 

Hi,
Also if you have the CTC version of screens they have cmos batteries to keep the date and time current, if its flat they wont keep it correct, sometimes they can readust themselves to other screen times if one or more are flat it could be going all over the place. They can be repaired, an outside possibility is the transmit cct in the touch screens but unlikely if your bus voltage is ok.
All CTCs can still be repaired by me at...
Trevor Callaghan
JEA Technologies
0404887463

 

Unfortunately no all the screens are black and white.
All are working perfectly they sit on there own network (bridge for common lighting applications)
Have asked the customer to keep a log to get an idea if we have a time or another ga switching causing issues.

Had that in the past with a switch that had a group in it that was triggering some logic to set lights to 100%

May be forced to run a old laptop to try and log the event was trying to avoid this as have had mixed results.

 

As this is a C-Bus and Dali system either system could be issuing the Off command.
You could try changing the CBus Group address or Dali Group to something different to establish if the command is C-Bus or Dali related.

 

Update

On a re visit to site I have replaced 2 x ballests ( 1 on each line both unable to open details and not responding to commands)

I have also re grouped the ballests on the dali lines

Have kept the same cbus ga for each just re assigned to the respective dali groups in the gateway.

Fingers crossed this fixes the issue.

I will be back on site in a few weeks will add a new ga for each if the issue is still there to rule that one out.

Is it possible it could be the gateway still tho?