Kuhn VT 50 terminal and ISOBUS cabling help

Has anyone by some freak chance got a pinout assignment for a Kuhn VT 50 terminal (the 8-way "CAN1-IN" port M12 connector please)? Or maybe even a user manual?

Alternatively does anyone know if Kuhn make an ISOBUS adapter cable that goes from this M12 connector on the back of the box to a standard 9-way ISOBUS in-cab plug?

I'm trying to help out a member here, who is trying to connect this terminal up to his baler via the tractor ISOBUS socket. The problem is the supplied connecting cable (part 83233134) for the box splits out to two Deutsch connectors - a 6-cavity DT socket (positions 2, 3, 4 and 5 are cabled) and a 4-cavity DT plug (positions 2 and 4 are cabled). Think this cable is actually supposed to connect to another Kuhn supplied bit of harness for their own ISOBUS implement socket etc. See attached.

I've sort of worked out (I think!) what signals pins are, from various sources, but don't want to risk knackering it through duff info :whistle: :cry:

Ta.
 

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OK so looks like I found the CAN1-IN pinout for the big brother Kuhn CCI 100 and 200 terminals. Seems like a pretty good starting off point...

Thinking it ought be pretty much same port pinout as the junior VT 50 terminal...I suppose as long as signals for CAN-High, CAN-Low, Ground, 12V supply voltage etc are in the same spot, we're pretty much golden.

Looking at pictures elsewhere in the manual it appears they do offer a standard in cab ISOBUS connection cable for these boxes...just need a part no. :whistle: No doubt they'll probably want a kings ransom for one :rolleyes::p:cool:
 

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cosmagedon

Member
Location
North Wales
I will be home Thursday and can have a look in the manual if you need any more info, I'm sure there are pin out diagrams.

We've just wired one up using all the kuhn wiring loom so I can take any photos you need, from memory there's only one deutsch dt plug going into the isobus socket, there's also a round plug with a blank and some link cables.
 
I will be home Thursday and can have a look in the manual if you need any more info, I'm sure there are pin out diagrams.

We've just wired one up using all the kuhn wiring loom so I can take any photos you need, from memory there's only one deutsch dt plug going into the isobus socket, there's also a round plug with a blank and some link cables.
Thanks yeh found the pinouts in the VT 50 manual - they are the same as for the newer CCI 100 and 200 terminals.

Should only need yellow, green, red and black cabled to the ISOBUS socket to get it sorted. Pretty sure they are all on the one Deutsch socket on the Y-cable as it stands, so straightforward to connect up...I think ;)
 

Richard Smyth

Member
Arable Farmer
Has anyone by some freak chance got a pinout assignment for a Kuhn VT 50 terminal (the 8-way "CAN1-IN" port M12 connector please)? Or maybe even a user manual?

Alternatively does anyone know if Kuhn make an ISOBUS adapter cable that goes from this M12 connector on the back of the box to a standard 9-way ISOBUS in-cab plug?

I'm trying to help out a member here, who is trying to connect this terminal up to his baler via the tractor ISOBUS socket. The problem is the supplied connecting cable (part 83233134) for the box splits out to two Deutsch connectors - a 6-cavity DT socket (positions 2, 3, 4 and 5 are cabled) and a 4-cavity DT plug (positions 2 and 4 are cabled). Think this cable is actually supposed to connect to another Kuhn supplied bit of harness for their own ISOBUS implement socket etc. See attached.

I've sort of worked out (I think!) what signals pins are, from various sources, but don't want to risk knackering it through duff info :whistle: :cry:

Ta.

I can't help you fortunately as only ever used a vt 50 for a few days on a potato planter.

What I'm wondering is why do you want to connect it through the tractors can. Would it not just be easier to connect the machine to the cable routed through the back window
 
I can't help you fortunately as only ever used a vt 50 for a few days on a potato planter.

What I'm wondering is why do you want to connect it through the tractors can. Would it not just be easier to connect the machine to the cable routed through the back window
As I understand it he wants to plug the VT50 into the ISOBUS socket in the cab and have the baler connected via the rear implement breakaway socket. Seems pretty straightforward.
 

Richard Smyth

Member
Arable Farmer
As I understand it he wants to plug the VT50 into the ISOBUS socket in the cab and have the baler connected via the rear implement breakaway socket. Seems pretty straightforward.

Fair enough. Hopefully it works. I don't believe it was designed to be used that way. Certainly wasn't an option when we were buying Grimme machines. The vt 50 is not isobus 11783 standard
 
Fair enough. Hopefully it works. I don't believe it was designed to be used that way. Certainly wasn't an option when we were buying Grimme machines. The vt 50 is not isobus 11783 standard
It's connecting to a baler which is ISOBUS. The VT50 is not being used to control any other implements (as far as I know). Had a look in the manual and its fairly much ISOBUS - maybe not compliant to the latest standards but does that matter :scratchhead:
 

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Indeed. I'm taking some solace that @cosmagedon has done this adaptation with the Kuhn loom/deutsch connectors going into the ISOBUS socket. In fact I've just asked him to check something on his loom adapter (nudge, nudge, wink, wink). Not sure if his is the exact same terminal, but as I said earlier it looks like everything from the VT50 to the CCI 100 and 200 terminals have the same basic pinout on the CAN1-IN port, so theoretically they should wire up the same way....

Unfortunately the tractor, box, existing loom and baler are at the other end of the country, so I can only go by photos etc, it really is going to be a suck it and see sort of thing!

This is the basic wiring arrangement....only four wires :ninja:

M12, pin 1 (Supply Voltage). <————————> CPC, pin 7, ECU Power
M12, pin 2 (Emergency Stop input)
M12, pin 3 Switch on signal for ECU
M12, pin 4 (Emergency Stop supply)
M12, pin 5 (CAN-Low). <———————————> CPC, pin 2, CAN_L input
M12, pin 6 (GND) <—————————————-> CPC, pin 9, ECU_GND
M12, pin 7 (CAN-High) <———————————> CPC, pin 4, CAN_H input
M12, pin 8 (centre, shielding)

I'm ignoring Emergency Stop signals (M12 pins 2 and 4), as its only the Basic (rather than Komfort spec) terminal from the photos I have seen. I've also not wired in M12 pin 3 (switch on signal for ECU).

So if anyone knows any better, as the yanks would say, holler! :D
 
Fair enough. Hopefully it works. I don't believe it was designed to be used that way. Certainly wasn't an option when we were buying Grimme machines. The vt 50 is not isobus 11783 standard
Made the cable up earlier in the week, with my fingers crossed crimped it all up and sent it up to Scotland. Got report back today that VT50 is working with the baler (at least in the yard) via cab ISO socket. I hope he's not just being nice and humouring me.

The only thing I did differently in the end was link pin 3 on the M12 plug (switch on signal for ECU/Job Computer) to the TBC_PWR pin 6 on the ISO socket plug.
 
Hi, I was looking to do the same thing from a Kuhn baler to a Claas tractor. Just wondering where you got the plugs from to make up the cable?
TIA.
Yeah no worries. All from RS Components this time, but you can equally get from Mouser or Farnell. Here is the BoM:

Phoenix Contact M12 8-Pin 3m Female Cable & Connector

TE Connectivity Type III+ Crimp Terminal, Female, 0.2mm² to 0.6mm², 24AWG to 20AWG, Gold Plating

TE Connectivity, 9 Pole Cable Mount Connector Plug, 13 Shell Size, Female Contacts

Cable clamp kit,std,shell size 13,CPC

Cut the M12 cable to length (should be 1m or less) then prepare ends to crimp the CPC contacts. You'll need a crimp tool to suit and a pin extractor comes in handy. Happy cable making :)
 

Sandy

Member
Location
Aberdeenshire
I
Made the cable up earlier in the week, with my fingers crossed crimped it all up and sent it up to Scotland. Got report back today that VT50 is working with the baler (at least in the yard) via cab ISO socket. I hope he's not just being nice and humouring me.

The only thing I did differently in the end was link pin 3 on the M12 plug (switch on signal for ECU/Job Computer) to the TBC_PWR pin 6 on the ISO socket plug.
I had the baler going today among silage and it works perfect thanks @Pheasant Surprise
 
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