Slew, Trolley, and hoist drives begin start sequence, then power down. Check incoming power. It is possible L1 of the circuit isn’t there, but the other two legs will be the ones providing 48V and 24V to feed processor and start sequence. It will be backed up by the U100N not being powered.
T85 starts and immediately shuts off
Crane would start normally, but during start up of drives crane would shut off. Erection screen was inaccurate, because crane would not start up. Faults showed 1-213-001, fault with communication with U213X. U213X had green run and I/O lights. Unplug H5, H6, and H7 (hoist, slew and trolley).
Crane would start and run. Plugged in hoist cable, restarted crane-it worked. Plugged in trolley cable, restarted crane-crane would work. Plugged in slew cable, restarted crane-crane would shut off. Problem could be slew cable, Canopen card in drive or drive itself.
Slew Limit Switches IGO
This is the wiring that needs to be jumped in order for the operator to untwist the power cords
T85A in Dismantle wouldn’t hoist K944A
Hoist Drive was saying it was RDY but had no functions on hoist. Erection aid was saying >30 dregrees and not =to 0 degrees went into the wire schematics and found out that K944A needs to be activated to get =0 degrees K944A was getting voltage but coil was to weak to pull in. Activated K944A and erection aid was now reading =0 degrees
Igo T85 keeps shutting off when the hook is near upper limit
Looking in the fault stack, 1-400-711 showing in the fault stack and BrF on the hoist drive this was the first fault. The second fault was 1-230-007 load sensor wiring problem.
It would always have the 400 code then the 230 code. Need to always look past the first fault code
Checked and all drives were shutting off, not just the hoist drive. Tomas says if all drives shut off, its not the brake but rather the brake fault is a result of another failure.
Near the upper limit, the 0 load was showing 230 pions. In the manual, the crane wants between 1150-1350 pions. As a result, the crane would fault and shut off all drives and the fault 1-400-711 was a result of shutting off the brake contactor and the 230 code from the processor shutting down the drives.
The teach-in portion of the manual tells the tech to lower the block all the way to the ground raise until the hoist cable is in the middle of the drum. This load cell was only reading 364 pions.
Replaced the load cell and redid the teach-in. The crane was only reading 936 pions at 0 load. Although lower than what the manual specified, it is within the operating range of the crane.
Crane load indication accuracy
1917.46(a)(1)(ii)
The accuracy of the load indicating device, weight-moment device, or overload protection device shall be such that any indicated load (or limit), including the sum of actual weight hoisted and additional equipment or “add ons” such as slings, sensors, blocks, etc., is within the range between 95 percent (5 percent underload) and 110 percent (10 percent overload) of the actual true total load. Such accuracy shall be required over the range of daily operating variables reasonably anticipated under the conditions of use.
Crane Starts but will not Swing
Crane starts, but will not swing. the Green Square is flashing on bottom right of LMI. Swing drive has 3 fault codes, AFE1 AFE2 and FBA A Missing.
For AFE! and AFE2 see link.
https://service.rockymtncranes.com/2022/09/07/afe1-and-or-afeb-faults-on-start-up/
Replace the memory stick, and had to force the K600M to stay active for complete download of the memory stick to the drive, and then restart crane. Crane swings and weathervanes properly.
Potain IGO T85 Hydraulic Motor not working
Was trying to tower up and let Jib retaining rope out. Toggle on my remote was to the right on mast. Hydraulic motor would not come on and wasn’t able to let out the Jib retaining rope. Breaker Q940M was not tripped. Looked at my Erection aid and where S916S & S918S was just —- Which it should have been reading S916S. Switches were good, checked B911N (Inductive control detector of retaining winch) will also put —- if it’s not reading correctly. Had 48V at G27. K916A was not Acted on. Had 48V at K916A. Wiggled contactor and orange plunger on K916A was Acted on. Erection Aid was reading S916S. Hydraulic motor and Jib retaining rope started working. Need to probably replace K916A
All drives shut off, when raising jib after telescoping
After telescoping to the correct height, went to raise jib to 0 degrees, and all the drives would shut off. It would go down, but wouldn’t come up. Tomas said on “SOME” T85’s and “SOME” generators (pre-emission), the jib reatining winch can trip the phase detector. Jumper the 2 red wires together in 1 slot (11 & 14), and bypass phase detector. Once operation is complete move wires back.
Reeving Impossible / Assistance Mode on Processor display
Processor shows the following
Remote shows the following
Crane may think it is in “High Height” (H3) and 4 parts of line are selected (DM). In H3 (High Height) crane must be operated in 2 parts of line (SM), not enough line on hoist drum.
Make sure S917S is adjusted properly. It is the limit box on the end of the jib retaining motor.
If the switch is adjusted properly, and not activated (Normally Closed NC), check Fault Stack (3-4-1)
Most recent fault is that the CanOpen Module is not detected. Verify by checking Can Module Inputs on processor (3-9-1)
Check for RUN light on Can Module (U213X)
If the RUN light is not on check T131F (the +24VDC transformer) for power. If the DC OK light is not on, the transformer is not working.
Check Circuit Breaker Q133F to make sure transformer is being supplied 480 VAC. If breaker is tripped and cannot be reset, replace transformer.
If RUN light on, but flashing, it is not communicating with the processor. It will still show U213X as not detected. Disconnect H4 (hoist), H5 (slew), H6(Trolley) connectors on Can Hub (U237X)
These are the communication cables for the labeled drives and operate on the same CAN2 network. If the H3 disappears (may need to restart crane), plug each cable back in to determine which one (or more) may be the problem. The cable(s) may not be the only problem. It quit possibly could be the drive(s) as well.
**There was a similar scenario with a different cause** Operator complains that the display shows reeving impossible. Processor thinks its in H# position, but the CAN Module has the correct lights activated. Looking at processor, it has no input from Can Module (Menu 3-9-1) The CAN hub U237X has a green light, and appears to be working. The CAN module itself has contact between the “blocks”, slide the CAN Module blocks off and on again to “clean” contacts and processor and CAN Module begin communicating again.