Rocky Mountain Crane Service Logs
Rundown of relay to contactor logic
Contactor 34K1 controls valve bank coils.
Y1 Mast down
Y2 Mast up
Y3 Jib up
Y4 Jib down
Relay bank
36K1-5 relays
36K1 Mast down (34K1-Y1)
36K2 Mast up (34K1-Y2)
36K3 Jib up (34K1-Y3)
36K4 Jib down (34K1-Y4)
36K5 Control relay (supply)
Tried to erect 1589 and the jib would not raise. Checked hydraulic pump, and it was building pressure, but the coil to open the valve bank was not being activated.
Contactor was switching to open, but the control relay for the valve was bad.
Light would turn on the face of the relay, but would not actually switch. The orange screw could be turned to manually make the switch and the jib would go up. Replace relay.
Minutes Hour and Minutes+Hour
If it is 10:30 in the morning, it would be:
301040
Crane would shut off intermittently. Red circle would display in the bottom right, but turn back to green circle right away. There were no active faults, but fault history showed Emergency stop chain : Incoherent state.
The emergency stop switch has NO and NC contacts. The fault means 1 set of contacts are acted on, but the other contacts are in “normal” state. (For example NC contacts are closed, but NO contacts are also closed).
The only e-stop that will register this fault would be the one on the armrest (per JP). Could be the e-stop or the joystick itself. The joysticks are the same, so swap to test.
Operator lowered the block down, and then the hoist drive stopped. Could swing and trolley, but no hoist or lower function. Drive displayed SAFF. This fault is not in the Hup manual. The fault code app shows the following.
Had the operator verify that the CanOpen card was installed all the way. Had the operator switch ports on the CanOpen card, and the crane began working. Went to the crane and replaced the CanOpen card, and verified both ports are working
Hoist suddenly stops, and often will not restart until several attempts later. E68 code is displayed on CCS messages. It means that the KEB hoist drive releases the brake, and looks for the microswitch contact within 600ms (.6 seconds). If it does not, it will fault. Follow the steps below.
Hoist Brake Microswitch Adjustment
Also with this situation, the operator claimed the load would drop slightly. Was able to verify during startup, K405A (validated drive contactor) would close and K409M would energize allowing the brake to release, then the drive would shut down. Could recreate and U400X #29 was supplying +24VDC at startup to energize K409M. This comes directly from the drive, replace hoist frequency drive
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.
Time shows 12:00AM and date shows 1/1/00. Fault (00024.00083) show SCM date and time incorrect.
Enter Mounting Menu (6). Enter System Date Menu (5) Reset date and time.
This is for older HUP’s that use 4 digit password.
When going into 2nd speed or faster, drive will fault. Trolley and swing still work at full speed.
DWFL displayed on Drive
The speed sensor is not reading the speed of the hoist drum. Need to make sure no dirt or grease is preventing the speed sensor from reading properly.
If everything is clean and clear, may be a bad speed sensor, you can change a parameter to ignore the speed sensor
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.