Does anyone have any experience with this drive? The elevator Is traveling up in the selected down direction.
Motor is a 31HP (Ac/Dc) Loher Motor, 5 Lead.
Has PM, UM, DM Contactors

In the up direction PM and UM pick as advertised runs up
In the down direction PM and DM pick but elevator travels UP.


- Runs on inspection up no problem.
- Put elevator at mid point - Not drifting up
- Down selected on inspection. Elevator runs in the up direction for 7-10 seconds, causes the drive to fault out.
- Sent drive out to see if there was any issues.
Drive installed and problem persist.
- Swapped L1 and L3 still travels up when down selected up.
- MCE says they dont know.
- GAL offered some Tech support on the Drive and they don't know


Voltage off drive
UP
2U-78v ac
2W-82v ac
2V-119v ac
1U-87v ac
1V-110v ac

Down
2U- 88v ac
2W- 92v ac
2V- 120v ac
1U- 120v ac
1V- 114v ac

Static
2U- 119v ac
2W- 119v ac
2V- 120v ac
1U- 59v ac
1V- 59v ac

I have the original Loher Technical description and Operating manual(PDF) if needed.

Does unit have load weighing?

Yes it does have load weighing. Peaking my Curiosity. I would assume it would just cancel calls... Honestly this hasn't even crossed my mind... The nights I don't bring the prints home im wishing I had them.

Is it calibrated right? If its off the the motor/drive may not be pre-torqueing enough. See if you can take it out of the equation, and see how it runs after that.

J-R
Sounds like your starting torq is too low. Check you tach!

Are you getting a voltage out to the motor in the down direction. It seems as though you may be opening the Brake and drifting. It may also be drifting in the up direction.

Bad motor...

This is a 6 lead motor with 2-1u and 2-1v.
--------
2U~~~~~
2W~~~~~
2V~~~~~ Wired to the drive
1U~~~~~
1V~~~~~
--------
1V-1u Inside motor casing, below dim rail Lugged together.
1v-1w
--------

Only 5 leads are powered from the drive.