Asr servotron

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jonnydeen
CNC Apprentice
CNC Apprentice
Posts: 47
Joined: Tue 09 Jul , 2013 20:45 pm
Hardware/Software: 1996 Novamill, linuxcnc
1986 Triac PNC, linuxcnc
1989 Senior 3c, Heidenhain TNC155

Asr servotron

Post by jonnydeen » Tue 22 Jun , 2021 17:57 pm

Wondering if anyone has a manual or any documentation pertaining to the asr servotron tfm servo amplifier as fitted to the 3c (tnc155 control) x axis motor appears to not be energising while z and y do. Z and Y do suffer from creep once energised.
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Andy B
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Posts: 396
Joined: Mon 20 Nov , 2006 18:19 pm
Hardware/Software: 280 VS lathe, Denford Senior E-type mill, Senior Major Universal Mill
Location: East Midlands, UK

Re: Asr servotron

Post by Andy B » Tue 29 Jun , 2021 8:34 am

Hi,
I've looked through all the documentation that I have, but there is very little on the 3C machines.
The wiring diagrams have already been posted. The only other relevant file is the Heidenhain TNC 151 / 155 operating manual.

Andy

jonnydeen
CNC Apprentice
CNC Apprentice
Posts: 47
Joined: Tue 09 Jul , 2013 20:45 pm
Hardware/Software: 1996 Novamill, linuxcnc
1986 Triac PNC, linuxcnc
1989 Senior 3c, Heidenhain TNC155

Re: Asr servotron

Post by jonnydeen » Wed 30 Jun , 2021 9:04 am

Cheers Andy, I did think it was a long shot.
I have contacted ABB uk (who own baldor and asr) and they directed me to sms automation. Still waiting for a reply to several emails. 🙄
I have done a bit of testing with the board and found the transistors on the x channel have failed so I'm just waiting for replacements to arrive. I'm just hoping the transistors were at fault and not just the outcome of another.
I already have the tnc 155 operators /programming manual and the service manual. Was there ever a machine manual?

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