Schematics of the IES EC12I 12 channel Dimmer pack

l.s.

I acquired a second handed IES EC12I 12 channel dimmer pack. Although it looks all right and the manual dimming on the dimmer itself is working fine, it doesn't want to communicate with DMX512.
Nowadays only 3-wire networks are being used, but is it mandatory for this dimmer to also have the DIMStat feedback?

If not the case, then I think the communications on the circuitboard are toast. So could I anyhow get the electrical drawings of the dimmer boards inside? I'd like to replace the internal controller board by an Arduino or something similar and control the dimmerboards myself.

Greetz,

Arjo

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mmeskill over 12 years ago

You can find the manual here: http://www.etcconnect.com/docs/docs_downloads/manuals/IES_EC12_EC24_UserManual.pdf

ETC in the US does not have quick access to much info on these dimmers as they pre-date ETC's ownership in Penko/IES.

Where are you located? I will contact ETC BV (IES) and see if I can get more info for you.

Sincerely,

Mike
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ArjoPoldervaart over 12 years ago in reply to mmeskill

Hey Mike,

Thanks for the quick reply. I am located in the Netherlands, so in the same country as ETC BV. If they have anything, they can contact me at my e-mail address.

With regards adn thanks in advance,

Arjo
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mmeskill over 12 years ago in reply to ArjoPoldervaart

Arjo,

It seems that we have no information at all for the IES EC12. This product pre-dates the merger of IES and Penko (which was before the ETC acquisition. We do have some drawings for the EC24 but not for the control electronics. We do know that the unit did not interface with DimStat.

The manufacturing manager does remember this product and thought it used IC 7516 for DMX (that is the most common DMX chip. We would recommend that you replace any/all IC 75176 and see if that gets your DMX working. You might also see a 6N137 chip. If you do, you should replace those as well.

Please let me know what happens. mmeskill@etcconnect.com

Sincerely,

Mike
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mmeskill over 12 years ago in reply to ArjoPoldervaart

Arjo,

It seems that we have no information at all for the IES EC12. This product pre-dates the merger of IES and Penko (which was before the ETC acquisition. We do have some drawings for the EC24 but not for the control electronics. We do know that the unit did not interface with DimStat.

The manufacturing manager does remember this product and thought it used IC 7516 for DMX (that is the most common DMX chip. We would recommend that you replace any/all IC 75176 and see if that gets your DMX working. You might also see a 6N137 chip. If you do, you should replace those as well.

Please let me know what happens. mmeskill@etcconnect.com

Sincerely,

Mike
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ArjoPoldervaart over 12 years ago in reply to mmeskill

Mike,

Thanks for the (extensive) intel! I'll try to take a look this week, I'll keep you posted.

With regards,

Arjo
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