Pneumatic Solenoid Wiring Conundrum

This year we want to use the McMaster-Carr high flow double solenoids part no. 6124K514 found at In the past, our team has used solenoids that require only two pins of electronic input. The electronic input on these particular solenoids is provided by a DIN connector and requires three pins: a hot, neutral, and ground. How/Where would we connect the three pins to the robot? How is it different from connecting the two pin solenoid electrical input?

Did you get the 12VDC version? Hot, neutral and ground are typically used when describing Alternating Current.

No, we got the 24V DC version because that was the voltage on last year’s solenoids. The lingo was from the video we saw on how to wire the DIN connectors that it needed.

I see there is a 110VAC option for that particular valve and the neutral likely only applies if you are wiring AC.

The coil should be marked with the voltage. Assuming it is 24V, i expect 24V would go the H & N. Sometimes coils are polarity sensitive so try both ways. Leave the ground unconnected.

That part we understand. The issue is we don’t know how to connect the solenoids to the robot once they’re all wired up. These solenoids need 3 pins and we don’t know if they go to an analogue breakout, the sidecar, or some other device/adapter. The solenoids we usually used only needed 2 pins.

Don’t use the ground. That leaves two pins for each solenoid. Total of 4. They connect to the solenoid break out just like last year.

Each solenoid gets wired to a separate channel on the break out. It gets programed as two separate solenoids. One is extend, the other retract. It will stay in the position last set. Only energize one solenoid at a time.

Yup, don’t connect the ground to anything…not even robot body! Use multimeter to check resistance between hot and neutral, you should have continuity with low resistance less than 20ohms (ball park #)