Search results

This is the best image I have here. The solenoid K1 operates if I bridge 8 & 9 on the pins of the sensor connector block. I cannot read the rating of the diode.

There is 12 volts at 9 & 10 so I'm not clear on what the diode between 11 & 12 is/isn't doing.

The switches are for displacement of the crane via K3 - K1. However none of the sensors are initiating K3. Having only a multi meter and limited knowledge I have not yet tested the diode between 11 & 12.

Do you have any idea why they should fail ? On the attached diagram I can actuate K1 by bridging contacts 8 & 9 on the DIN rail. There is 12 volts across 5 & 9 and 6 & 10. They where working but the system has been sat idle for some years. I have replaced S3, S4, K2 and K3.

Here's the wiring diagram.

Proximity switch on crane hydraulic spool block.