Search found 69 matches
- Sun Feb 12, 2017 9:04 am
- Forum: Wiring, Electrical, Relays and Sensors
- Topic: 7segment relay
- Replies: 1
- Views: 8489
7segment relay
Anyone have specs on the 7 segment display? Looking at the old version of BCS docs (the new Wiki docs are nice thank you very much) the PDF at the brewtroller link is corrupt. The oscsys link doesn't do to info on the display. I understand these are old links. I ran into an interesting issue. The di...
- Tue Jan 24, 2017 8:35 am
- Forum: General Discussion
- Topic: failure design
- Replies: 7
- Views: 4031
Re: failure design
I thin I am sort of doing that now. Currently, I have the glycol process as the highest process. The entry state controls the temp. The exit condition for that state is the float switch. The next state turns off all of the protected devices. Speaking of failures.... My AC unit is no longer cooling. ...
- Mon Jan 23, 2017 5:45 pm
- Forum: General Discussion
- Topic: failure design
- Replies: 7
- Views: 4031
Re: failure design
Interrupting the relay input is a good idea for safety. For my use I have 2-3 relays to interrupt. I'd need a triple pole triple throw switch.
- Sun Jan 22, 2017 6:46 pm
- Forum: General Discussion
- Topic: failure design
- Replies: 7
- Views: 4031
Re: failure design
normally open (NO) or normally closed (NC)
- Sun Jan 22, 2017 6:43 pm
- Forum: BCS Programming
- Topic: glycol safety feature
- Replies: 4
- Views: 10313
Re: glycol safety feature
Why are you using a float switch on the glycol? It should be a closed system that would never get to a low glycol level. You have the volume in your conical jacket (or coil) plus the reservoir volume. Why would the level ever drop? A leak in the system probably with a host or fitting. I would keep ...
- Sun Jan 22, 2017 3:08 pm
- Forum: General Discussion
- Topic: failure design
- Replies: 7
- Views: 4031
failure design
What are standard failure practices and designs? For instance, my desire is to keep relevant equipment turned off if a float switch indicates an error condition. I was thinking about how the switch should be wired. It seems one might set the din to normally closed so that if the sensor/switch wasn't...
- Sun Jan 22, 2017 2:15 pm
- Forum: BCS Programming
- Topic: glycol safety feature
- Replies: 4
- Views: 10313
Re: glycol safety feature
New approach. Created a "glycol" process set to run at start with 2 states. The entry state is "glycol normal" which has hysteresis control of the AC unit. Ladder logic is used to always run the pump when the AC is on. (I may put them on the same power source and not worry about ...
- Sun Jan 22, 2017 1:38 pm
- Forum: Roadmap and Feature Request
- Topic: Ladder Logic
- Replies: 3
- Views: 9524
Re: Ladder Logic
Seeing some of the power of the online tools I was wondering if some of the programming might be better done via an external web interface and installed via the API. Just thinking out laud, it seems the BCS would have more room to operate if it didn't have to support all the programming internally. ...
- Sun Jan 22, 2017 7:20 am
- Forum: Roadmap and Feature Request
- Topic: Ladder Logic
- Replies: 3
- Views: 9524
Ladder Logic
It would be nice if the ladder logic editor used the configured names for inputs, outputs, processes, etc. or showed them in legend where those are dragged to the ladder.
- Sat Jan 21, 2017 8:09 pm
- Forum: BCS Programming
- Topic: glycol safety feature
- Replies: 4
- Views: 10313
Re: glycol safety feature
Wiring up a switch and leds for bench testing shows the ladder logic is not a good choice for the safety. Well, at least not with having the rest of the control logic in processes. I had the wrong idea that output would only be effected when the input was raised instead of the correct understanding ...