Hello all. I’m having trouble finding anything on this subject. I’m trying to auto-start a small generator that has a ‘push for 2 seconds to start’ switch. I want to use the relay on a cerbo and I’m trying to avoid adding a small control board to convert the close-contact to start to a ‘close button contact for 2 seconds to start’ and then stop method.
Are there any creative options to handle this with just a cerbo relay to do the 2-second hold method?
excluse the tag selection, nothing seemed to line up but diy, terminals, hybrid_generators was closest.
You normally have to use programmable timers to control a “push-to-start/push-to-stop” generator, the Cerbo/Multiplus only outputs an “on/off” signal. These are mine…
On mine (Kohler generator) a short pulse (0.8s?) starts the generator, and a long pulse (1.6s?) stops it. Other generators may be different, but the idea is the same – turn each edge of the Cerbo/Multiplus control signal into a pulse.
Do you have a device not shown handling the close/open contact portion? I see the 2 timer relays but I don’t see what with handle ‘trigger relay 1 when contact closed’ and ‘trigger relay 2 when contact opens’
The timers can be configured to output a pulse on either a rising edge of the input (turn on) or a falling edge (turn off), the two outputs then both drive the pulse control input of the generator (there’s only 1 pushbutton for start and stop).
Also if the start pulse is too long when the generator is hot and starts up quickly, it starts and then immediately shuts down again. Which really confuses the Cerbo/Quattro because they think it’s now running…
