Hi,

I’m using an SM 1222 (8DO) Relay Changeover to power some micro pumps. However, these operate at 6Vdc, so I would like to know if it is possible to use this voltage to feed the coil, is it? Or it only works with 24Vdc?

Thanks for the help 

As you can see here, you have to put 24V for the coils and 6V for your pumps.

Pin1 and 2 are for 24V and 0V (internally used for the coils)

Pins 5 or 9 for your 6V supply and Pins 7 or 11 for your pumps.
Don't forget to connect the 2nd wire of power supply and pumps (0V).

Hello,

Thanks for your help! 

I was afraid that it was only possible to use 24V, but now I know that I can use the voltage I need (6V in this case).

Thanks a lot