timmy
Member
i hadn't thought of a sequencer. the biggest problem with using a sequencer is that the way federal signal wired the lightbar(s) only allows you to feed power to one spot; the distribution after that is hard wired (soldered) under the tray and power goes to both items (lights and motor) at the same time. i would have to re-wire the bar to use a sequencer. a sequencer would be a great idea if you had one BIG power supply and wanted to run several lightbars at the same time off of it. you could start the bars up one at a time and avoid getting all the startup surges at once as the bars came on at the same time.
i tried the approach of paralleling two of my 30amp 12vdc power supplies to run the bar. i still get about a five second delay as the two power supplies work through the surge before the motor starts. my guess is that the bulbs are slowly warming up and at some point the resistance is low enough to let the motor start. with one of the 30amp 12vdc power supplies the lightbar sometimes starts but after a lot longer delay. i tried this with both of the model 22/4 rotar bars i have and got the same result so i don't think i have a component issue with just one bar - they just take a lot of power to get going.
timmy
i tried the approach of paralleling two of my 30amp 12vdc power supplies to run the bar. i still get about a five second delay as the two power supplies work through the surge before the motor starts. my guess is that the bulbs are slowly warming up and at some point the resistance is low enough to let the motor start. with one of the 30amp 12vdc power supplies the lightbar sometimes starts but after a lot longer delay. i tried this with both of the model 22/4 rotar bars i have and got the same result so i don't think i have a component issue with just one bar - they just take a lot of power to get going.
timmy
NotNormalEnterprisesLLC said:what about a sequencer?
Kussmaul Electronics Co., Inc. Soft Start