Hello,
Working on a turn on and we are having some odd behavior with a couple of circuits of Lutron Hi Lume 3-wire ballasts dimming fluorescent fixtures.
A single cove has four circuits of these ballasts. Two circuits operate correctly, two circuits pulse from their set level to full every 6 seconds (except every 10th pulse, which is a 12 second interval). This happens throughout the dimming range from 1%-99%.
This problem is intermittent, it seems that the ballasts need to warm up for 20 minutes or so before they will exhibit these symptoms. Both circuits pulse in unison.
SR48 with a CEM3. All four circuits are dimmed with a D20F. The two problematic circuits share a signal distro card.
We have installed a new signal distro card, no change.
We have changed the SCR off time from 500 to 750 and 1000, no change either time.
The electricians isolated ballasts in the circuit with several different ballasts, no change.
The electricians metered the circuit at the lug, with the load attached, and we see jumps of 6-12 volts. The only source of control is sACN from Paradigm.
Our next thought is that the dimming wire for each circuit could be crossed (Fixture A wire to circuit B, fixture B wire to circuit A)
Any thoughts?
