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
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
Hup Slew limit
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
Paint Codes for Potain Tower Cranes
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.
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.
Windshield washer check valves
While filling the washer bottle, all the fluid would leak out.
On the output side of each washer pump is a check valve.
to access the valves the A/C unit must be removed.
found that the check valves were broken and cracked, presumably from freezing. Replaced the valves ( toyota part # 85321-26020) and washer bottle stays filled.
GR Plug – MDT 389
The GR plug is for the auto greaser option. The auto greaser does not have GR marked on the plug. If the GR plug is not plugged in the slew ring will not be automatically lubricated.
FM GRU 1589 Limits Hoist and Trolley
This is only for the Upper and Lower hoist limits and the Inner and Outer Trolley Limits
—– Limit calibration —–
With machine in work,
press the radio control buttons A and D simultaneously for at least 5s until the radio control buzzer sounds.
At this point the machine goes into calibration mode and the radio control screen changes showing the current maximum and minimum limits.
It is possible to move the lifting and trolley axes WITHOUT LIMITATION to bring them manually to the maximum and minimum positions.
Once the limit position has been reached, by keeping the corresponding button pressed for at least 3s, the quota (minimum or maximum) will be fixed to the current position of the axis
and to the value displayed by radio control.
The keys are assigned as follows:
– key A for minimum lifting limit (LOWER LIMIT CLOSEST TO GROUD)
– key B for maximum lifting limit (UPPER LIMIT CLOSEST TO JIB)
– C key for minimum cart limit (INNER TROLLEY LIMIT)
– D key for maximum cart limit (OUTER TROLLEY LIMIT)
The LEDs positioned above the keys indicate whether the limits calibration has been carried out (LED on steadily) or not (LED off), respectively at the minimum and maximum lifting and trolley levels.
——————-