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81K CAN Bus Codes

E1502 = CPU (=S1+A-KF1)

E1503 = Control Stand Right (=P1+H-S1)

E1504 = ICN_D64 (=S1+A-KF3)

E1505 = Control Stand Left (=P1+DK-S1)

E1506 = ICN_D32 (Manual Mode 125%) (=S1+A-KF4)

E1509 = Radio remote control (=S1+A-KF14)

E1511 = AKS_unigate (Anti Collision) (=S1+A-KF13)

E1513 = EMS Electronic Monitoring System Display (CAB) (=L+A-P0)

E1514 = Display CGM  (=S1 +A -P9)

E1515 = Load Measuring Axle (load Pin) (=F+H-B4)

E1517 = Load Moment Sensor (=A+A-B17)

E1518 = Hook height sensor (=A+H-B5)

E1521 = KAW Sensor Trolley sensor (=C+K-B1)

E1522 = WIW-FC Hoist Frequency Drive (=S1+H-T1)

E1526 = KAW-FC Trolley Frequency Drive (=S1+K-T1)

E1531 = Anemometer (=C+K-B1)

To access CAN Diagnostic  Turn off the power to the crane. Open the panel behind receiver and turn the CAN Diagnostic key to the right. Turn the crane back on and wait for the CAN Bus screen to boot.

Find the node that is causing the error.

Power off the crane, switch the CAN DIAG back to the left, fix the component that isn’t registering.

Any Error 1500-1550 indicates the component is no longer on the Bus.  The CAN bus is not active for some reason it is possible for the error 1514 to be indicated in the Display as the CPU can no longer communicate with the display via the disrupted bus. Even replacing the CGM Display with not correct the problem!

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E1514 Code

Operator lost all functions and the remote displayed Port Connection Error .
The electrical panel PLC displayed an hour glass and E1514. Crane would not start.

Any Error 1500-1550 indicates the component is no longer on the Bus.  The CAN bus is not active for some reason it is possible for the error 1514 to be indicated in the CGM as the CPU can no longer communicate with the CGM display via the disrupted bus. Even replacing the CGM Display with not correct the problem!
Switched crane to scaling position 1 on the three position key. This would allow the crane to start.
Crane had zero for jib length. The crane has lost jib information and needs to be reconfirmed


Press F3 for scaling summary. All icons should have a checkmark next to it.

Liebherr Scaling Screenshot

Any icons that have a “X” next to it need to be reconfirmed. F1 to previous screen, and F2 to confirm each icon. Must confirm the OK at the end as well.

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FM Gru won’t start

When trying to start crane, the PLC and the load sensor were not turning on.  The top light on this device was flashing red.

This is an electronic circuit break.  Found the short, and corrected.  The red light can be pushed to reset.

 

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Liebherr 81K.1 shutdown and won’t restart

The crane lost eception with the remote and shutoff.  The operator tried to restart and it would not restart.  The operator took a picture of the following code.

The code 0x 0400 means the remote is asked to start (restart), but there is a function being applied at the same time.  The operator was in mid-swing when it lost reception and the operator did not release the joystick when he tried to restart.  The picture shows this.

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Liebherr 81K.1 won’t swing

Customer called and crane won’t swing.   Crane will hoist and trolley, but no swing.  Error code “E 705”.  Slowing gear safety device.  Thaddeus was able to FaceTime with customer and found slew drive circuit breaker was tripped.

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Hup won’t slew after powered off for 10 min

Hup had zoning and slew encoders turned on. Encoders would pair, Zero slew angle would accept and zones worked after being set. Normal operation would resume, but the crane would not slew after being shut down at the base (CCT/SCM computers powered off) and restarted after 10 minutes. Scrolling through the menu zero angle wasn’t present. Operator reset zero angle and slew movement was regained until crane was powered off at the base.

1)Turn off Slewing encoder option, This will tell the CCT to not look at the encoder, the crane regained slew.
2) Check slewing encoders for faults. In this case, the main slewing encoder would flash a single red light.
3) replace slewing encoders and pair
4) turn on slewing encoder option
5)Set zero angle and zones

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LMI screen won’t work. Says needs update

When you have the cab plugged in the LMI screens won’t work properly.  If you don’t have a cab hooked up the screen in the electrical panel at base of crane will work just fine. If you have the cab plugged in the screen at the base of the crane will say needs up date.   For the one in the cab to work correctly you need to unplug the the one at the base of the crane. The plug to unplug it is behind the screen.