Author: Chad

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T85 keeps shutting off

Fault is 1-230-026, slew encoder failure.  Instead of changing to “disconnected” in the slew drive, changed to “Partially Open Loop”.  Allowed crane to continue operation.

Menu to change parameters in Slew Drive

Menu

Parameters

Complete list

96 System Menu

02 Pass code

Last two are 71

Back

Menu 74

Menu 12

Partially Open Loop

 

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Trolley would not work on Igo T85A

Hoist and slew would work, but no trolley.  Obf was displayed on trolley drive.   Found trolley discharge resistor was damaged and broken.  Ultimately, was an input power problem that damaged trolley resistor.

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Igo T85A Horn Honks when trying to Telescope up

When trying to telescope up, horn would honk.  Would go down, but not up.  Went through erection aid and all looked good.  Needed to readjust brake microswitch on telescoping drum.

Adjust microswitch by loosening locking nut and running down adjustment screw until “H” light comes on in CAN Open module (U213X).  Back off screw, just until the light goes off.

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Trolley stopped working on Potain T85A (27148)

Customer called and said stopped mid-pick while trolleying.  Customer was able to hoist and swing, but no trolley.  Lowered load and cleared the hook.  Drive showed FST.

Went to Erection Screen and all sensors and switches were open.  The thought was that we lost +24V from transformer.  Customer went to get a meter, but didn’t work.  Got a 2nd meter and turned crane back on.  Erection Aid read correctly.  Trolley drive was flickering between FST and RDY.  Disconnected G33, and drive went to RDY.  Power cycled the crane and all works at this time.