CD80SV CC modules needed

[jhochb]

Good Morning All

I have a venue that wants to put some ETC LED S4 on 3 of their stage electrics.
Issue is, they have a Strand CD80SV rack.
Does anyone know where I can get 6 CD80 dual constant circuit 2.4K modules SL # 72302?
Or maybe the dual contactor mod SL# 72385 / 6 type "Z"

Thanks

[tyler.martin]

Ive been looking for some as well. Strand was unsure if they had any...

[jhochb]

Good Morning Tyler

Strand doesn't have the metalwork anymore. They told me they can't make them.
Johnson Systems may be working on something & Century can convert the dual 20's. Either 1 or both chanels.
My job is still in the quote stage so I can wait a bit.

[TimMiller]

You can have a dimmer repair tech make the modules cc modules. They pull out the ssr and choke and run a wire directly from the breaker to the load side pin on the module.

[DavidNorth]

You can have a dimmer repair tech make the modules cc modules. They pull out the ssr and choke and run a wire directly from the breaker to the load side pin on the module.

Exercise some caution here. The choke helps to manage the SCCR rating of the module by providing a partial inrush resistance [in rough terms] to a large short circuit current draw and helping to protect the rest of the power feed. IE, a large enough short could damage components in the module or cause a main feed to trip. Likely? Not really, but then no one really expects a large, low-resistance short-circuit until it happens. You really should put a large, and appropriately class-rated fuse in the module to replace the choke.

WARNING: None of what I have told you to do is covered under the UL or ETL listings for the product. Modification of the product and a failure sometime later with put all liability on the facility and the person doing to modification.

It's a shame someone hasn't yet made a listed module for the tons of these racks that are out there.

One more very important point...there is a real and distinct advantage to using relay modules to power LED fixtures. You make a large investment per LED fixture and you want it to last a long time. A relay module allows you to shut off power to the fixture thereby reducing time on the power supply and allowing it to run for much more time down the road. Protect your investment in LEDs....use relays.

Have fun,
David

[MNicolai]

It's a shame someone hasn't yet made a listed module for the tons of these racks that are out there.

Yeah. Somebody should.

If only there was a company who was in the business of making modules you can put into dimmer racks...

[TimMiller]

I understand the reason for the choke when using an scr/ssr but it can be removed when using just a breaker to power a feed.

[DavidNorth]

I understand the reason for the choke when using an scr/ssr but it can be removed when using just a breaker to power a feed.

Yes, you can remove it, but the technical reason behind my earlier statement still stands. The choke does more than merely create a voltage drop when faced with a sudden change in current [risetime for a forward-phase control dimmer]. The secondary benefit to having a choke in series is a creating a less than sudden current draw through the breaker, bus bars and feed thereby provding another series point of dimmer component, rack and feed protection in the case of a short circuit.

Can you get by with remodeling or modifying your dimmer modules. Probably, but I, for one, do not wish to be in the responsibility chain for any problems arising from information given in this forum. Note that any product modification, especially when it comes to power-handling products, does assume some responsibility and liability.

David

[jhochb]

Good Morning David

Thanks for your input.
This is why I've been looking for orphans.
I an move a wire like the best of them
I'd like to use Relay mods if I could find them but finding CC's are looking slim.

__/)_

[derekleffew]

Good luck in your search, Jack. We'll keep an eye out for you.

Every time the topic arises, the end is the same:

... As an ETCP Certified Entertainment Electrician, and a factory authorized field service technician for various manufacturers, I want to emphatically state that an end user should *NEVER* modify a dimmer rack in this manner. The liability and risk of injury or death is too great.

Modifying the dimmer rack can void the dimmer rack warranty, voids UL (or ETL, or whomever), and likely makes you, your venue, and your employers/supervisors responsible for any and all damage this may cause if something fails. You risk, at the least, damage to the dimmer rack and connected devices, and at most, loss of life.

I implore you, if you need power that can't come from a dimmer...install a relay module if you're able to / your rack has that option, or have a licensed electrician help you come up with a safe and viable solution. ...

In order to prevent further discussion of modifying dimmers, this thread is closed. Anyone able to help Jack can contact him via jhochb.