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I have an SED2 VFD that I would like to have latch digital inputs for the on/off motor functions
Created by: Joshl26 at: 2/3/2011 5:10 PM (1 Replies)
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| 2/3/2011 5:10 PM | |
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Posts: 2 Rating:
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Vithani, I have an SED2 VFD that I would like to have latch digital inputs for the on/off motor functions. This way I can use two normally open pushbuttons on my operator control board, one for the ON command and one for the OFF command. The SED 2 (from what I can see and have read) does not seem to have the same Free Block programming functionality like the Micromasters do. Maybe I am not looking in the right place. Is it even possible to latch DI's with an SED2 VFD? Could I do so through the use of BI/CO programming? And if so how would I do so? Or would I have to use some kind of PLC, etc.. to do the latching? Thanks for your time, any help here is very much appreciated as I am still fairly new to VFD's in general. Splitted from latching DI's. |
Last edited by: O_Moderator at: 2/4/2011 2:11 PMnew subject after splitting |
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| 2/3/2011 11:03 PM | |
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Posts: 2 Rating:
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I just found an interesting document that supposedly shows a way to latch digital inputs using the digital relay outputs. See the attached document, specifically page 7 of 11 (3 wire control using relay 1 for latching) Could I do the same with my SED2? I noticed the relays in the example are labelled differently than on the SED2 that we have. In the example they use Relay Outputs - 18,19,20 (which correspond to Relay 1 on the micromasters). Whereas on my SED2 I have the choice of either Relay Output 1 - 20,21,22 OR Relay Output 2 - 23,24,25. Also from what ive read so far it looks like my relay outputs on the SED2 can only be 120V, 2A OR 230V, 1A Again any help on this subject is greatly appreciated Attachment38BBEC6Ad01.pdf (576 Downloads) |
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