Rocky Mountain Crane Service Logs
To place KEB drive in a mode where it does not look for speed sensors, must be placed in Degraded Mode. Follow the steps in link below and also steps to put back into normal mode.
Can not apply more than 30% of speed or drive will shut down. (E66 code in degraded mode)
On MDT389, this did not work. Here are the other procedures, per JP.
75HPL Degrade Mode Instructions
Operator called and complained that the heater in the cab was not working. Wipers worked, and when switched over to AC the light would come on but no fan.
Had the operator power down the crane and unplug the KP plug and plug it back in. Heater started working again.
In case needed:
Q131A Heater Circuit Breaker
Q340A & Q342A Wiper Circuit Breakers
Q362A AC Circuit Breaker
Checking working order of HUP Joysticks
This explanation is not correct. In order to test the switches and joysticks of the remote, you must do the following in order.
Frequency drive starts and immediately shuts down, with code AFE1 (emergency stop)
Operator sent over following screen with active fault
Had to force K600M to stay energized (pressing in on the blue tab behind the plastic cover) to access drive and turn slew motor encoder to Partial Open Loop. (74.12)
Crane would start up and run, but operator didn’t like swing characteristics. To be expected, the slew drive is no longer receiving feedback from the motors, and is estimating speed and direction.
Replace slew motor encoder, and all is good.
**Note from Denis** Make sure and protect the shield with heat shrink or tape, as it can cause a short
If the motor encoder is internally shorted, the drive may not operate in partial open loop as it tries to protect itself. If this is the case, unplug the 2 connectors from the slew drive and reprogram parameter 90.46 to Force Open Loop.
Error messages on CCs would be Slewing Frequency Converter lost (00011.20482) or Slewing Frequency Converter not detected (00011.20481)
Operator called and Plug Ins inside of cab not working. Also, had a number of errors are were Open Circuit.
Q104F Circuit Breaker was tripped. (Only blue breaker in the cabinet)
Trolley position could be set during Teach In, because it bypasses all encoders, but after completion and it Normal Operation Mode it would stop suddenly. Found encoder box was not adjusted properly and the gear whell on the encoder box was not turning with trolley winch. Readjust, and had to re-teach.