I am a Dutch boat owner and I bought the Velleman K6200 kit to let a bilge pump (24V,7A) run approx 30-60 seconds after the sensor made watercontact. The kit is made to run on 24V AC or 220V AC. My boat has 24V DC so I thougt that must be no problem. I didn’t solder the diode bridge on the print and make a wire instead of D2 and D3. I did’nt use C7 and R20 (for 220V) , the R19 I did use. So the L pin went the 24V plus and the N pin went 24V neg. I thougt the print should work like this but it doesn’t and the little R 19 is gonne smell en runs hot in a second.
The neg connection looks well and give neg on crossing D2-D4 and the base of C5,ZD3 and ZD1.
The + connection gives 24V untill R19 and nearly nothing after R19.
Should R19 be less in Ohm and more in Watts or am I making another faillure. Who can help me ?? Thanks already theo
I think there must be something wrong on the PCB, misplaced component ? …
Normally it should also work on DC when C7 is “bridged”.
Thanks for your answer. The only difference with the example is that my set had a little enerdiode for D1 (to the LED) instead of a normal diode as the four of the bridge. From the beginning I had C7 bridged and the four diodes on its place ( using N for - and L for + 24V). The print didn’t work and the diodes went hot. I took the diosdes off and bridged D2 and D3. The - makes contact with point D2-D3 and base of C5,ZD3 and ZD1.
So the problem must be in the + lead. Can a wrong type for D1 be the problem?
Can you give me some values I can measure on V, V1 and RY , to see if the problem is on de baseprint or the timerprint.
Thanks for your help. Theo van Erp