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by **RunsWithCrouse-Hinds** on Tue Nov 18, 2008 5:55 pm

I finally got an 8 phase NEMA backpanel today, from group member made in china. Its definitely heavier than I thought it would be; I wondered why the shipping weight was 32 lbs.! Anyway, I'm having some trouble figuring out some parts of the panel.

I should mention that it is an Eagle Signal panel, and here is the ID sticker:

If anyone has a schematic for this I would be very appreciative if they could scan it for me!

It appears that it is a 4 phase/4 ped panel, meaning that load switches 1-4 are vehicular signals and 5-8 are the pedestrian signals for vehicular phases 1-4. However, there is some extra wiring that I don't understand on this panel.

For example, the yellow wires trailing off to the left in the picture below:

They seem to be connected to various phase hold/omit channels on the panel, as well as some green/yellow and/or walk/don't walk. What would this wiring have gone to?

Second question is I have 3 NEMA connectors on this thing: A, B, and SW2. What is SW2? It looks to be about the same size as the A and B connectors. Is it maybe for a conflict monitor?

Third question is I can't quite figure out the AC input on this thing. I see the AC input strip here:

But it's only numbered 1-8, and it appears that both AC+ and AC- were formerly wired with black wires, so that doesn't help at all.

Also, does anyone know where I should connect switches for some sort of homemade police panel? It would seem like those wires would have also been cut off, but unless they're somewhere in that group of yellow wires, they are not to be seen.

Any help would be greatly appreciated!

Thanks,
Dan

by **EPAC-EPIC-MARC** on Tue Nov 18, 2008 7:48 pm

Hey Dan,
Cool backpanel! its an older Eagle EPIC or EF 140 panel. EPIC 140's are four phase pretimed units.
Gonna try and answer some of your questions here.

The "SW" does sound like a conflict monitor connector but trace the cord and see where it connects to. See if that connector is tied with the voltage monitor on the controllers A connector, or if any of those wires coming off the SW are tied to the load switches. If the load switches are tied to it then they are channel watching circuits for the conflict monitor. In both cases, these would be conflict monitor connections.

The wiring that is connected to phase hold and phase omit connected to the A, B, and C connectors. Phase hold and omit are both obsolete inputs for more modern NEMA controllers. Though they still work when hooked up, most omit and hold/rest features are built into the controllers of today. I'm not sure though, but I think it sounds like that could be remenants of an old connector...not certain on that.

For the AC connections, try tracing the wires to see where they are soldered on the back. Remember the AC pinout for the load switches.

I'm not 100% sure on my answers, but I hope I gave you some things to check. But that panel really makes me want to convert my custom setup to an actual one :drool:

haha

-Nick

by **RunsWithCrouse-Hinds** on Tue Nov 18, 2008 8:02 pm

Thanks, Nick. I will check that out. It maybe an older EPIC panel, but it is interesting because it still has ped and vehicle detector inputs.

I guess I should ask everyone, is this layout a "standard" layout for backpanels or is it indeed meant to be paired with some other 4 phase controller?

-Dan

by **EPAC-EPIC-MARC** on Tue Nov 18, 2008 8:11 pm

RunsWithCrouse-Hinds wrote:Thanks, Nick. I will check that out. It maybe an older EPIC panel, but it is interesting because it still has ped and vehicle detector inputs.

The EPIC140 controllers were capable of vehicle and pedestrian detection. They were known as pretimed because if detectors were used it would work on a no call-no cycle/call-cycle basis. Meaning if no calls were placed the phase would skip over, and if any number of calls were made the controller would just run the full cycle. This differs from EPACs or other actuated NEMAs because you can't delay or modify the controller to work with responses to changing traffic patterns.

-Nick

by **RunsWithCrouse-Hinds** on Thu Nov 20, 2008 2:55 pm

Ok, I did find out what the yellow wiring mess is. It turns out it was for an old LAU system, which as Jason explained it, was some sort of external telemetry interface for interconnecting to a master controller. So I can safely remove that wiring, but I still don't know where the AC in goes and the police panel! I could probably trace out the AC stuff, but it seems like the police panel would have some sort of more convenient hookup than directly patching to everything on the front panel...

-Dan

by **RunsWithCrouse-Hinds** on Thu Nov 20, 2008 6:38 pm

Ok, I removed the LAU wiring, which made it a LOT easier to read the legend for each position on the terminal strips and attempt to figure out what's going on. I was *just* about to post a message about how I couldn't figure anything out...when I finally just did.

Now all I need is a cabinet that this will fit into (wooden or *maybe* a NEMA cabinet (hey Jay...)) and some wiring work...

-Dan

by **EPAC-EPIC-MARC** on Sat Nov 22, 2008 12:46 am

Hey Dan

Did your panel come with a police switch panel? If not you can rig up one fairly easily. For on and off simply use the AC power. For flashing use a SPDT toggle switch to transfer power between the control assembly and the flasher pack. Manual control would require a toggle and a push button triggered by Stop Time* and Interval Advance respectively.
Both those inputs must be connected to Logic Ground.

*These controllers have outputs called Manual Control Enable that you can use, but it only allows you to manually choose the green times. Stop Time freezes all timing and will only change based on pushing a button connected to interval advance. Problem with using Stop Time is it doesn't place calls on all approaches during manual control. I personally used Stoptime, when I had manual control hooked up.

-Nick

by **gwlreno** on Tue Nov 25, 2008 10:42 am

Hey Dan,

I may have a schematic of that backpanel. I'll try to find it this weekend.

by **made in china** on Tue Nov 25, 2008 10:20 pm

gwlreno wrote:Hey Dan,

I may have a schematic of that backpanel. I'll try to find it this weekend.

Hi Gordon, I already sent him the schematic.

Can't wait to see this stuff up and running.

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