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Advise on ASEA TYRAK DC drive retrofit

Advise on ASEA TYRAK DC drive retrofit

Advise on ASEA TYRAK DC drive retrofit

I'm seeking advice on an ASEA TYRAK 73 DC drive retrofit.
This drive is used for a Hoist motor on a Container Crane.
Motor Plate data is:
ASEA LEA400 152kW
400V 415A
Exc. 220V 6,2A
800/1248 r/min

Tacho Generator is:
O.C.V./RPM 0,1
MAX.RPM 4000

As this is an very old unit and is having a lot of intermittent problems now. It's more than time to exchange it.

As there are not a lot of manufactures doing DC drives,I would like to know what brands/models should I look for especially for hoisting applications.

RE: Advise on ASEA TYRAK DC drive retrofit

Well we did change a some drives like that a couple of years ago.
Now I am not sure that, that particular drive is still avalibul but I am sure they have a replacement if not.
It was a ABB DCS 400 there are/was different sizes.

We also made a complete go through of the motor new bearings going over the rotor and new brushes and so forth.
Since the motor also is a ABB I would start there.

I have found it easy to use without any problems but our applications are a bit different from yours.

Best Regards A

“Logic will get you from A to Z; imagination will get you everywhere.“
Albert Einstein

RE: Advise on ASEA TYRAK DC drive retrofit

Make sure your proposed drive is rated for hoist duty. Not all are.

RE: Advise on ASEA TYRAK DC drive retrofit

I am not sure the drive above is on the market anymore.
My suggestion was to contact ABB.
Since ASEA is ABB today.


They have a new drive series DCS800 that according to them can include application software e.g. cranes, winders.

Best Regards A

“Logic will get you from A to Z; imagination will get you everywhere.“
Albert Einstein

RE: Advise on ASEA TYRAK DC drive retrofit

The ABB dcs800-s information is here (https://new.abb.com/drives/dc/dcs800-s). This is the version of the DCS800 that indicates it can be configured for hoist applications.

It likely will not be a drop in drive replacement.

RE: Advise on ASEA TYRAK DC drive retrofit

Hello RedSnake and FacEngPE, thank you for your comments.
On ABB's website is announced that the DCS400 is planned to keep in the Limited phase until the end of 2023, after which it will be transferred to Obsolete phase and they recommend to replace DCS400 with the DCS550.
I will have a look at the DCS800.

I am also looking at:

Siemens - Sinamics DCM 6RA8087-6DV62-0AA0
Parker - 590P-53350042-P00-U4V0
Gefran - PD32-EV-500/520-500-4B-B
Control Technics - MP550A4

I have some questions.
FacEngPE how do I know if they are hoist duty drives?
Is the main advantage of a 4 Quadrant drive only the capability to regenerate ?
How does a DC drive handle the generated Back EMF on the ascendance of a load ?
Could this be a limiting factor on selecting a DC Drive ?
Is a input filter choke mandatory? How to dimension it ?

Regards, Celso

RE: Advise on ASEA TYRAK DC drive retrofit

You will need a 4 Quadrant drive otherwise you can't wind and rewind and break in both directions.


“Logic will get you from A to Z; imagination will get you everywhere.“
Albert Einstein

RE: Advise on ASEA TYRAK DC drive retrofit

Redsnake presents the essence of the reason you need a 4 quadrant drive. I am going to be a bit more wordy.
For hoisting the main torque is up when you are hoisting or lowering. Except for a short period when accelerating downward.

You could use a mechanical or eddy current brake external to the drive for dealing with the overhauling load, but except for small package hoists and a few unusual cases, it is less costly to use a 4 quadrant drive, and use the drive to either send the regenerated energy to a breaking resistor, or regenerate back to line.

All of the drive vendors that market drives rated for hoisting applications state that in their literature.

I am not sure if your Siemens Part Number is correct, but you can find the applicability to hoisting applications here https://mall.industry.siemens.com/mall/en/us/Catal...#.

For DC hoisting at full load requires rated field voltage. If you need to go faster than full load rated speed the drive reduces the field voltage (field weakening).

Any potential issues with back emf would have been handled with the initial matching of the drive and motor when the crane was designed. If the drive needs a back EMF value, it must be calculated, as it can not be directly measured. Four your work the drive tuning will resolve any potential back EMF issues.

As for the need for an inductor, you will need to review the manual for the drive you select. Most container cranes have power delivery at MV to an onboard distribution transformer. This usually confines harmonics problems to the crane itself, lessening the need for input inductors.

RE: Advise on ASEA TYRAK DC drive retrofit

If counter balanced (like elevators), it may take power to lower the "thing" and require breaking to raise the "thing". Elevators are counter balanced for half their rated load, so an unloaded elevator does exactly the opposite of what "common sense" would dictate. Without full mechanical analysis, it can be hard to know which direction requires power at any given time or loading. But, if it is just cable around a drum, then gravity rules.

I’ll see your silver lining and raise you two black clouds. - Protection Operations

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