ALC SE6104 and SE6104a
what is the difference between the two modules?
It's the inputs. The SE6104A and SE6166 use the same pc board , but the SE6104A is just minus all of the components for the extra UI's and AO's
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Terminal blocks. SE6104a have the newer small green terminal blocks, where two inputs shares a common. SE6104 have older black terminal blocks which have a common for each input.
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ALC discontinued the SE6104 and replaced it with the SE6104a. My understanding is they did this so the layout would be similar to some other modules and they could do away with one of the set-up's in manufacturing.
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Circuit board change to support the expanded se6166 with one format. The a indicates the revision. One board two modules.
I must say I'm not a fan of the smaller green connectors on the a and zn modules. Seems they are going in the right direction for future designs according to the ALC share site.
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