dear, friends
the motor controller in this truck is damaged (capacitors are exploded) and power circuits burnt.
So, i replaced it by a new part... it worked fine for three days
and during operation the truck is shut down and give "code 51"
I checked : fuses, capacitors, PTC, contactor tips everything is OK
any help would be appreciated
Thanks in advance
Showing items 1 - 3 of 3 results.
if this truck has the large traction controller set up error 51 is most likely from blackened or bad contact tips,if the contacts are fine and working properly than the fault is most likely to be a bad connection at the contactors
Capacitor voltage is low before the line
contactor closes.
Symptom
Lift truck does not move.
Line contactor does not close.
Motor controller capacitor does not pre-charge.
Possible Causes and Test Procedures
- Control fuse open.
Check control fuse for open circuit; replace fuse if
necessary.
- Faulty PTC.
Replace PTC.
- Verify that the hydraulic pump motor contactor tips
are not welded.
If the contactor tips are welded, replace the contactor
tips.
- Accessory or component other than motor controllers
connected to load side of line contactor.
Verify that the traction and pump motor controllers
are the only components on the load side
of the line contactor.
Do you have a list of errors?
Error 51 is not there
Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.
If you are having trouble using the Discussion Forums, please contact us for help.