I've been working on a yale erc050ghn48te that has an odd problem. When trying to drive forward the motor jerks terribly, and sometimes the backup alarm briefly sounds. It seems as if it is trying to run in both directions simultaneously. When traveling in reverse it runs normally. What's even odder is that if the lift pump is running it will run normally in either direction.
It does not display any fault codes during any of this. If it was jerking in both directions of travel I would think it was the encoder in the motor, and I would expect it to give a fault code.
My gut says its a controller fault.
Does anyone have any experience with a problem like this?
Is there a way to view control system inputs & outputs on the dash display, and if so how. Is that done?
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The problem has been found and solved! The other tech that was working on this decided to chandelier the trac motor encoder, while he was doing that he discovered that the connectors for the hyd motor and trac motor were swapped. He reconnected them correctly and everything was good after that.
I'd not experienced this problem in hand yet
However, Willing to give you what info to need
Pls give me your email
The problem is that the traction works normally in one direction and not the other, do you have any first hand experience with a problem like this, could the encoder bearing fail in that way? And why would it work correctly when the hydraulic pump is running too?
Hi !
Some ideals for your ref:
The hydraulics operate normally, the traction does not operate correctly, and the dash is operational but no status codes are present.
This is Status code#52 ---> Traction or pump speed sensor error
==>Traction or pump motor operates very slowly and jerky
Possible causes:
-Disconnected or broken sensor wires between motor and motor controller.
-Malfunction of motor encoder bearing.
Pls recheck this first before you think controller
Rgds
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