Elk zone type 32: Power Supervisory 24hr

MrGibbage

Active Member
For those of you using this type of zone, how did you go about wiring the zone? I am good with relays and electricity, but I can't think of a way to have a single zone controlled both by the battery (which would open the zone on a low batt) and controlled by AC (which would close the zone). I mean, what if both happen, which is not unreasonable, right? The elk is running on batt power because we lose AC and then the batt goes low. So which way does the zone go now? Open or closed? Or am I supposed to set up two zones, one for the battery and one for the AC power?
 
I am using multiple zones, which is good for rule writing, etc. But it doesn't seem that great for notification via the monitoring company since the Elk seems to go into a trouble state when the first zone trips and then the other zones are basically ignored, so you don't get notified that the trouble state is restored until ALL zones are happy. I haven't tested this lately, so I may be totally wrong here. Spanky?
 
Yeah, maybe Spanky will drop in. Anyway, I've been thinking about this. For the backup battery which is wired directly to the M1G, how would I wire in the supervisory relay? In parallel or in series? And do I need any resistors across or in line with the relay? I don't want to screw up the charging system, and I don't want to make sure when the battery is doing its job, it isn't wasting juice on holding a relay in position. Same for the AC. But for that one, I feel pretty certain I will just put a 28VAC relay in there in parallel across the power leads, right??? Any resistors needed for this one?
 
For the "built-in" battery, I don't think you need to do anything, the M1 has enough monitoring and smarts built in. The M1 does a daily battery test. I am using an external power supply with battery backup that has relay outputs for the AC in and DC out statuses. Each of those relays is wired to it's own M1 zone.
 
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