GE Quik Bridge Loop Receiver and M1G

[Ira]

I have a GE 8016 Quik Bridge Loop Receiver that will be used primarily with GE NX-695 SAW wireless water sensors. It has eight channels that correspond to its eight NC relays. I want to connect the receiver to my M1G via an input zone expander, but I'm confused about how to wire it up.

Basically, the receiver's terminal strip has terminals for 12Vdc (+ and -), eight terminals for the eight channels, a terminal marked "ground", and a couple of other terminals for low battery and supervision. The Elk zone expander is in a remote can. I have an Elk 412 power supply and battery in the remote can, and I want to use the 412 to power the GE receiver.

The diagram on page 10 of the Installation Manual doesn't make any sense to me. For a NC loop (which is how I want it set up), it shows a single wire running from the channel one terminal on the receiver to a zone input on the control panel. The only other connections are the 12Vdc+- connections. Does this mean that the receiver must get power from the Elk data bus?

I also noticed that the channel terminals and either the single ground terminal or the 12Vdc negative terminal seemed to act as a regular relay...low resistance when closed and high resistance when open. If I should be using the single ground terminal, do I just daisy chain it to all of the "neg" terminals on the Elk input zone expander?

Thanks,
Ira

 

[Spanky]

The outputs from the Quickbridge are open collector transistors which means they short to negative.

Program the M1 expander zones as normally open and connect the terminal with the zone number label to the Quickbridge zone output. You only need one terminal for the zone, so do not connect anything to the negative next to the zone. When the Quickbridge zone goes non secure, the open collector transistor will short to negative and violate the M1's input.

 

[Ira]

The outputs from the Quickbridge are open collector transistors which means they short to negative.

Program the M1 expander zones as normally open and connect the terminal with the zone number label to the Quickbridge zone output. You only need one terminal for the zone, so do not connect anything to the negative next to the zone. When the Quickbridge zone goes non secure, the open collector transistor will short to negative and violate the M1's input.

Thanks Spanky.

What about powering the Quik Bridge and zone input expander since they are both in remote locations (from the M1G)? Do either/both have to be powered from the M1G, or can either/both be powered from the 412 power supply in the remote can? Can one be powered from the M1G and one from the 412? What are my options? My original plan was to power the expander via the M1DBH connection and the Quik Bridge from the 412, but I'm curious as to what my options are. Will that work?

Thanks,
Ira

 

[gatchel]

Either way should work for power. You might have to common the negatives of both power supplies to create a 0v reference between the power supplies.

 

[Ira]

Either way should work for power. You might have to common the negatives of both power supplies to create a 0v reference between the power supplies.

I've seen several posts that commented on "common ground reference" (I think that's the term), but I haven't been able to find a layman's explanation of what it is, when/why it's needed, and how to implement it. My setup contains a main can (with the M1G) and two remote cans (so far), each with their own power supply, battery, input and output expanders, data bus hubs, and keypads. My main can does not contain a separate PS. I would very much appreciate it if someone would provide the info for a setup like this. Also, maybe some best practices, e.g., if there are situations where it is best to power a remote expander/keypad/device off of the data bus instead of the power supply in that can, how to "common the negatives", etc.

Thanks,
Ira

 

[Digger]

Either way should work for power. You might have to common the negatives of both power supplies to create a 0v reference between the power supplies.

I've seen several posts that commented on "common ground reference" (I think that's the term), but I haven't been able to find a layman's explanation of what it is, when/why it's needed, and how to implement it. My setup contains a main can (with the M1G) and two remote cans (so far), each with their own power supply, battery, input and output expanders, data bus hubs, and keypads. My main can does not contain a separate PS. I would very much appreciate it if someone would provide the info for a setup like this. Also, maybe some best practices, e.g., if there are situations where it is best to power a remote expander/keypad/device off of the data bus instead of the power supply in that can, how to "common the negatives", etc.

Thanks,
Ira

To keep it simple just connect the negative from the ELK (4 wire buss black wire, or any other negative since they are all common) and the negative from each aux power supply.

The databuss needs to reference the same common (the negative) no matter where the device it is connected to receives its power (the panel, an aux power supply etc).

 

[Ira]

Since I'm running power from the M1g on the data bus to all the remote cans' M1DBH's, does that mean I can simply connect a wire from the negative terminal on the blue terminal block on the remote M1DBH's to the DC output negative terminal on each one's respective 412 PS?

Sorry about so many questions, but I need to be sure so I don't fry anything.

Thanks,
Ira

 

[gatchel]

That should work. Just make sure when powering your accessories that the power for such accessories is wired to the negative and positive of the same supply. That way there will be no current flowing on the data bus negative wire.

 

[Ira]

Looks like it is all working correctly.

Thanks,
Ira

 

[Digger]

That should work. Just make sure when powering your accessories that the power for such accessories is wired to the negative and positive of the same supply. That way there will be no current flowing on the data bus negative wire.

???

All of the negatives should be connected. Since they are connected they are at the same potential. Not sure what you mean above.

 

[gatchel]

Get a negative from one point and the positive from the opposite end power supply...Don't ask. I've seen it. Either through some relay or extra wires that the customer decided to use as power feeds. In other words the data bus cabling became half of the power supply current path. Not pretty if the wire is not large enough to handle the current.