Need assistance choosing a PLC
Need assistance choosing a PLC
(OP)
I need a PLC, preferably compact, rail mounting, 24 VDC, with at least 8 discreet (digital) inputs, and 8 relay outputs. I was looking at the inexpensive TECO SG2-20VR-D. I downloaded their SG2 Client software. Designed my circuit on it, and activated the simulator. Unfortunately, it didn't work out as planned. I'm quite used to microprocessor programming. This just seems really easy to do. So I really doubt I did this wrong.
Real world terms, this is what I need it to do:
When input 1 is activated, relays 1, 2 and 6 must activate. After one minute, the relays return to the unenergized state.
When input 2 is activated, relays 1, 3 and 7 must activate. After one minute, the relays return to the unenergized state.
When input 3 is activated, relays 1, 4 and 8 must activate. After one minute, the relays return to the unenergized state.
When input 4 is activated, relays 2, 3 and 7 must activate. After one minute, the relays return to the unenergized state.
When input 5 is activated, relays 2, 4 and 8 must activate. After one minute, the relays return to the unenergized state.
When input 6 is activated, relays 3, 4 and 8 must activate. After one minute, the relays return to the unenergized state.
I understand that I am not using relay 5 as well as inputs 7 and 8, but I'm going to use this at a later point in time.
I didn't set up the timers yet, I just set it up for toggling just to see if it'd work.
Is there a PLC out there that's able to do this? Am I just missing something with the programming? I'm attaching the ladder file I designed. It is really extremely simple. I'm just wondering if its beyond the limits of the PLC itself. I'll be grateful for for any help. Thank you.
Real world terms, this is what I need it to do:
When input 1 is activated, relays 1, 2 and 6 must activate. After one minute, the relays return to the unenergized state.
When input 2 is activated, relays 1, 3 and 7 must activate. After one minute, the relays return to the unenergized state.
When input 3 is activated, relays 1, 4 and 8 must activate. After one minute, the relays return to the unenergized state.
When input 4 is activated, relays 2, 3 and 7 must activate. After one minute, the relays return to the unenergized state.
When input 5 is activated, relays 2, 4 and 8 must activate. After one minute, the relays return to the unenergized state.
When input 6 is activated, relays 3, 4 and 8 must activate. After one minute, the relays return to the unenergized state.
I understand that I am not using relay 5 as well as inputs 7 and 8, but I'm going to use this at a later point in time.
I didn't set up the timers yet, I just set it up for toggling just to see if it'd work.
Is there a PLC out there that's able to do this? Am I just missing something with the programming? I'm attaching the ladder file I designed. It is really extremely simple. I'm just wondering if its beyond the limits of the PLC itself. I'll be grateful for for any help. Thank you.





RE: Need assistance choosing a PLC
Why can't the Teco do this?
Keith Cress
kcress - http://www.flaminsystems.com
RE: Need assistance choosing a PLC
With plenty left for other stuff. Draw back - no online editing.
AB Micrologix 1100 has an ethernet port and online editing features. However, you might need to add a output module.
RE: Need assistance choosing a PLC
Thanks samtorres66, but the AB Micrologix 1000 is a bit large. I'm trying to keep it as simple as possible. However, I'm going to keep it on the back burner just in case things don't pan out with the Teco.
RE: Need assistance choosing a PLC
RE: Need assistance choosing a PLC
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If we learn from our mistakes I'm getting a great education!
RE: Need assistance choosing a PLC
RE: Need assistance choosing a PLC
If it is I will upgrade and take a look. Frankly a TECO is almost overkill for this.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Need assistance choosing a PLC
RE: Need assistance choosing a PLC
RE: Need assistance choosing a PLC
Keith Cress
kcress - http://www.flaminsystems.com
RE: Need assistance choosing a PLC
RE: Need assistance choosing a PLC
Keith Cress
kcress - http://www.flaminsystems.com
RE: Need assistance choosing a PLC
Keith Cress
kcress - http://www.flaminsystems.com
RE: Need assistance choosing a PLC
RE: Need assistance choosing a PLC
Keith Cress
kcress - http://www.flaminsystems.com
RE: Need assistance choosing a PLC
Keith Cress
kcress - http://www.flaminsystems.com
RE: Need assistance choosing a PLC
RE: Need assistance choosing a PLC
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