I have some I/O blocks that are designed to switch 24VDC. I have a customer with 12VDC hydraulic solenoid valve coils. Can I use a resistor in series with my outputs to drive the 12V coils with my 24V power supply? If so, how do I calculate the resistor value required for the coil?
Notes:
I don't know manufacturer/model number at this time, but I can eventually get it if this would work.
I can't change to 24V coils because they have some legacy controls that they would like to keep in place (I will protect outputs of all equipment with diodes). Only one system at a time would be controling the equipment.
The I/O blocks I am using only work with 24VDC. They are sealed units with connectors (IP67) so external relays are not a solution here.
Thanks,
Dale
Notes:
I don't know manufacturer/model number at this time, but I can eventually get it if this would work.
I can't change to 24V coils because they have some legacy controls that they would like to keep in place (I will protect outputs of all equipment with diodes). Only one system at a time would be controling the equipment.
The I/O blocks I am using only work with 24VDC. They are sealed units with connectors (IP67) so external relays are not a solution here.
Thanks,
Dale