Cat Lift Trucks (& Caterpillar) EP20KT:
Error 28 Phase error

Hello,

A friends cat ep20kt throws error e28 if you try to move forward. Driving backwards and hydrolic works fine.

E28 is phase error sensor
Could you please advise me what to check/measure to trace the reason for this error ??

Kind regards from the Netherlands,
Eric
  • Posted 8 Jun 2022 16:22
  • Discussion started by Eric_M
  • Netherlands
Showing items 1 - 3 of 3 results.
Thanks for your reply! Appreciate it!

Yesterday I already measured the H board and found one of the Fet's was faulty indeed. (fet for switching left motor winding)
Waiting for parts now, it's a p60nf10 FET and I will try my luck after replacing it. Other parts on H board measure okay (lso measured the cables to the motors and the windings).

Kind regards,
Eric
  • Posted 29 Jun 2022 01:47
  • Reply by Eric_M
  • Netherlands
it is a shorted/faulty H bridge board i mean. Try a new one and look it is solved.
  • Posted 28 Jun 2022 22:52
  • Reply by tr_doctor
  • Netherlands
Regards
Nobody?

A little help how to measure/test the H board or motor windings would be appreciated......

Kind regards,
Eric
  • Posted 23 Jun 2022 19:34
  • Reply by Eric_M
  • Netherlands

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.

Konecranes Liftace F16-600C
Hornweg, Netherlands
Used - Sale
Crown CG33P5
Braeside, Melbourne, Victoria, Australia
Hire

PREMIUM business

Noblelift
Global leader and manufacturer of high quality electric, lithium-ion, and IC material handling equipment.
JCB trials hydrogen combustion engine  Staffordshire, United Kingdom