On the Hup cranes we have slewing limit switches. We also have the option slewing encoders and the collector option.
• The limit switches (S610S and S615S) work only when the options are not enabled (angle, Top Zone and collector)
• If the top zone option is enabled we must also enable the angle option. When the 0° angle is enabled, the slewing movement cuts will be made by the encoders (B260N and B261N) and from 0°.
• If the collector option is activated, we bypass the limit switches, so there is no more cutting of the three turns in the slewing
Slewing Motor Encoder Failure (internal 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.
The drive will also need to be told not to look for the Encoder.
- Parameter 75.12
- Switch from 2 to 0
- Save
In this specific case, operator experienced a separate fault showing “Transition 4” . Here is the link to that fault.
https://service.rockymtncranes.com/2024/01/12/transition-4/
Paint Codes for Potain Tower Cranes
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.
Hup 40-30 after swinging shudders to a stop
Check the swing motors o make sure that mechanically there was no failure and the brake are physically releasing.
Update crane CCS software and update each drive
BST21-284-B – New CCS version 1.8.21 and updating of the HUP variable frequency drives_EN (2) (1)
**NOTE** This will delete the serial number and load cell and encoders
Setting up MR329 without 3 dead turns
When teaching in the MR329 it isn’t required to set the 3dead turn parameter if the block will reach the ground before running out of rope on the drum.
If you previously set the 3 dead turn and need to get rid of the saved information on CSS, unpair the hook height encoder, pair it. Turn off CCS and turn it back on. Teach the zero height, and the upper height and then escape out of the teach in menu. A prompt will warn you on startup that 3 dead turns has not been set.
This is important because if you have a crane that reaches below the base of the crane the 3 dead turn function may preclude you from going low enough.
You can get around this if you want by pulling out rope onto the ground and setting the 3 dead turns but it may screw you on the next jobsite.
Potain HDT 80 hoist
HDT 80 hoist stopped working, cannot hear the brake releasing but contactor was pulling in lower left wire on rectifier was loose
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.
Hoist Drive Update
Hoist drive failed. Instructions for drive replacement are in the folder, however it is required to add +24 vdc to DQ+. This applies power to the hoist brake control relay.
See attached schematic. Typically, the dotted lines are optional, but this is required.
Frequency Drive
The new hoist frequency drives have only three speeds.
- 1st speed 12.12
- 2nd speed 35.09
- 3rd speed 85.00
The Manitowoc hoist drive have five speeds.
- 1st speed 12.12
- 2nd speed 35.09
- 3rd low speed 85.00
- 3rd middle speed
- 3rd high speed 125.00preset speeds