Festo Single Acting Valves

[Mark McLeod]

12v or 24v solenoid valves? I assume 12v.
12v or 24v wired to power the Solenoid Breakout? I assume 12v, too.
Wires reversed where they connect to the Solenoid Breakout?

Code is good with the Solenoid status indicators so the trouble is between the Solenoid Breakout and the Solenoid.

The old Festo single solenoids have a variety of wiring connection combinations.
No two are necessarily alike, and a lit indicator light can still mean the wires are reversed.
I found it best to test them first using alligator clips, so you can easily run through the possible combinations of three.
The taller pin isn't an electrical connection, just the shorter three.
Make no assumptions, and pay no attention to the wiring recommended by the datasheet, just try all possible combinations one at a time.
It doesn't hurt the solenoid to be wired incorrectly, so don't worry about burning it out.
Mark the proper connections when you find them, but don't assume the next valve will use the same pattern.