Wiring a Danfoss variable spool

[Dave W]

I've got a gritter with no control box.
The disc is hydraulic driven and looks to be variable from the cab presumably for spread width.
the danfoss spool has a hirshmann plug with 3 wires. Back in the top/middle which is earth. Then a red and blue to either side. The red is connected to what looks like a permanent live and blue???
If I put power to the red the led indicator goes green. Power to red and blue and led goes red.

I'm thinking the blue should be some kind of variable voltage feed to alter the speed?

Any help appreciated

 

[Dave W]

Suppose I should tag @Mr Happy. He likes a project

 

[cquick]

Do you see a part number anywhere on the valve?
My guess is it's PWM on the low side, i.e. permanent live while rapidly switching ground in order to approximate an analog voltage. If you connect blue to gnd, what happens? Can you hear or feel anything?

 

[Mr Happy]

I love a long distance project @Dave W and I sell Danfoss components. Will send you all the info you need in the morning.

 

[Dave W]

Do you see a part number anywhere on the valve?
My guess is it's PWM on the low side, i.e. permanent live while rapidly switching ground in order to approximate an analog voltage. If you connect blue to gnd, what happens? Can you hear or feel anything?

There's a manual lever on the back. That's locked solid when powered up but I can move it with no power. Can't recall what I was doing with which wires now though.

 

[ACEngineering]

I've got a gritter with no control box.
The disc is hydraulic driven and looks to be variable from the cab presumably for spread width.
the danfoss spool has a hirshmann plug with 3 wires. Back in the top/middle which is earth. Then a red and blue to either side. The red is connected to what looks like a permanent live and blue???
If I put power to the red the led indicator goes green. Power to red and blue and led goes red.

I'm thinking the blue should be some kind of variable voltage feed to alter the speed?

Any help appreciated

If there the type that matbro and Sanderson used etc then I would say NO. Go find something else as them solenoids like to set themselves on fire when continuously powered up.

In the past you would see many matbros etc fire damaged were it was obvious the fire started at the valve block, the reason for this was the micro switch in the centre of the joystick that welded its self shut or was bypassed by someone if it failed open rather than fixing it with new switch.
That switch sent 12v power to the solenoids to power them up ready for the variable signal to tell it what to do. When powered permanently solenoid valves would overheat and short out causing a fire.

 

[ACEngineering]

There's a manual lever on the back. That's locked solid when powered up but I can move it with no power. Can't recall what I was doing with which wires now though.

If the manual lever was locked up on a matbro or Sanderson while running solenoid was faulty or the joystick was powering it permanently as in my other post.

 

[Mr Happy]

Depends on what actuator is fitted. You can't move the manual lever if a PVEH is fitted and powered up.

 

[Dave W]

@Mr Happy to the rescue yet again.
the correct joystick arrived within 24 hrs and even came with an idiot proof wiring diagram for beginners.
Ready for gritting tomorrow

 

[Mr Happy]

Glad to hear you got sorted @Dave W