Park

Once a level is set in Park, any actions taken in live could be set or recorded, but would not affect live output.
When you are using [Select Active][Out] are you sure you have left the Park menu and gone to live?
Have you parked the channels at full or the addresses?

I'm still having problems. I set Ch1 and 2 (Relays) to Full and Parked them. But when I turned the ELE2 off the relays stayed on! I can manually put those channels to full and out to operate the relays. Hmm!

What is your system architecture?? Do you have any DMX nodes? One of my facilities connects the console to the dimmers and lights via a series of Net3 Gateways. In the gateways, you can set a DMX Loss timing. In other words, the gateway will hold what DMX values it last saw if you lose DMX signal. It treats the console shutting down as a loss of DMX.

Could something like this be what's happening to you??

Alternately, could it have Hold Last Look on Data Loss enabled?? Try bringing up another light/dimmer & then shutting off the console with it on, does it go out immediately?? If not, then you probably have Hold Last Look enabled. 

Alternately, could it have Hold Last Look on Data Loss enabled?? Try bringing up another light/dimmer & then shutting off the console with it on, does it go out immediately?? If not, then you probably have Hold Last Look enabled. 

It seems to work as it should but I seem to remember there was some contingency in the SENSOR rack that should it lose DMX it would maintain the last look. I had completely forgotten this and need to dig the manual out. It sounds like something you would want if you accidently lost DMX but I would hate to turn it off for just one relay pack to work. 

I just looked at the CEM3 manual.  Below is the list of option settings for Data Loss Behavior.  These appear to be on a rack-wide basis, not on a module by module basis:

Ouch. I never thought to look in the CEM manual! The more I think about it the more I reckon its the Data Loss thing. I'm pretty sure it it only maintains for 10 or 20 mins and then shuts stuff down. Im going in tonight and will test this out. Thank you 

If your rack does have ‘Hold Last Look’ enabled for DMX Loss and you don’t want to mess with that setting, I’d create 2 macros: one to park the relay channels at full & one that parks the relays at 0.

Set the first as your startup macro & the second as your shutdown macro. Problem should be solved & you don’t have to worry about parking/unparking anything manually.

Yep, the Hold keeps them on for about 10 minutes after shutdown. But I like to turn them off right away so will take your advice. Thank you