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Loher Dynalift E

 
Technical Questions
Last Post by Anonymous 6 days ago
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 J-R
(@J-R)
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Topic starter 18/03/2015 4:06 am   [#13688]
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.

Last edited by J-R; 03/17/15 08:08 PM.


   
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 sinister1ca
(@sinister1ca)
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18/03/2015 4:47 am  
Does unit have load weighing?



   
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 J-R
(@J-R)
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Topic starter 18/03/2015 4:59 am  
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.

Last edited by J-R; 03/17/15 09:11 PM.


   
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 sinister1ca
(@sinister1ca)
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18/03/2015 5:11 am  
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.



   
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 jkh
(@jkh)
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18/03/2015 5:12 am  
J-R
Sounds like your starting torq is too low. Check you tach!



   
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 john jay
(@john jay)
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18/03/2015 9:09 pm  
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.



   
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 J-R
(@J-R)
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Posts: 0
Topic starter 19/03/2015 4:39 am  
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
--------



   
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 J-R
(@J-R)
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Posts: 0
Topic starter 19/03/2015 4:49 am  

Only 5 leads are powered from the drive. 810w" sizes="(max-width: 760px) 100vw, 760px" /> 810w" sizes="(max-width: 760px) 100vw, 760px" width="810" height="1080" alt="" decoding="async" loading="eager" fetchpriority="high" />

Last edited by J-R; 03/18/15 08:50 PM.


   
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