Need help Brown Boveri dc drive

[cccelcj]

Has anyone worked on a Brown Boveri AAD 6001 dc drive? I have one on a Gleason machine that controls a Reliance 60HP dc motor. The drive trips frequently. There are leds on the regulator board and I do not know what they indicate. I have no manual. Can any steer me in the right direction?

 

[jraef]

Brown Boveri (BBC) of Switzerland merged with ASEA of Sweden back in circa 1987(?) to form what is now ABB (ASEA Brown Boveri). You could contact their Drives Division offce in whatever country you are in.

JRaef.com
Eng-Tips: Help for your job, not for your homework Read faq731-376

 

[Skogsgurra]

Hi cccelcj,

I actually got the manuals for several of those old drives. I guess that they are the ones with a red-brownish PCB in a black open frame chassis?

I used to work with them a couple of decades ago and do some field support on old units even today.

The LEDs have the following meaning:

H1 (green) Ready
H2 (green) Firing pulses max delay. Control not released.
H3 (red) Tacho signal missing or DC fuse blown.
H6 (green) Torque diredtion I (motoring).
H7 (red) Torque direction II (braking).
H8 (green) Standstill.



Gunnar Englund

http://www.gke.org

--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[jraef]

LOL Gunnar, I should have known. Next time I'll just say "Contact this guy..."

JRaef.com
Eng-Tips: Help for your job, not for your homework Read faq731-376

 

[cccelcj]

Thanks, skogsgurra.
I am not at the drive right now, but I will be returning early Monday morning. I am to remove the drive because it is reasoned it needs to be repaired. I am not sure of this. There are two pots I believe are directly under the leds. They are on the regulator board. Possibly asssociated with the speed regulator. Do you know what these pots for?

 

[Skogsgurra]

Are they marked R1 and R2?

If so, they are for current limit. R1 motoring R2 braking.

Gunnar Englund

http://www.gke.org

--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[cccelcj]

I do not recall if they are marked R1 and R2. They are the only pots on the board. The board has multiple functions as I can recall. Speed regulator, current regulator (I think) and monitoring. Assuming that these are for current limit, is there a procedure for setting them? Would they have anything to do with the tacho led coming on if they are not adjusted properly?

 

[Skogsgurra]

Only two potentiometers? What is the number of the board? Should be something like AF2001.

The tacho LED comes on when the actual value deviates too much from expected value. That happens when the DC fuse is blown or if the drive cannot keep speed up. So it is possible that the torque limit setting makes the tacho LED blink if the setting is too low. I could take a snapshot of the diagrams and mail it to you. But everything is in German so it may not be of any help.

Gunnar Englund

http://www.gke.org

--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...