Wire choice between ELK M1 and local expanders

[felixrosbergen]

Whats typical? Do you guys just use Cat5e or do you 22/4 or something for these databus connections?

With the DBH it seems you terminating a Cat5e into a RJ45 for plugin to the hub, since the databus is only 4 wires what do you do with the other 4 at the expander side? Just cut and leave them?

Is it possible to put a 22/4 wire into a RJ45 connector?

 

[CORT]

Whats typical? Do you guys just use Cat5e or do you 22/4 or something for these databus connections?

With the DBH it seems you terminating a Cat5e into a RJ45 for plugin to the hub, since the databus is only 4 wires what do you do with the other 4 at the expander side? Just cut and leave them?

Is it possible to put a 22/4 wire into a RJ45 connector?

Stay with cat5 for this application, unless you are using the retrofit database hub. First, there is only 1 additional pair of wires using cat5 (see the M1DBH instructions). The orange and green wires are paralleled. One nice thing about the Elk M1DBH is that it gives you access to the additional pair (blue +/-) of conductors. You can use this extra pair to double the conductors for power or send an audio signal to keypad locations.

 

[Spanky]

You are probably not going to get 22/4 into a RJ45 connector without a lot of hair pulling!

 

[felixrosbergen]

Thanks gents....Cat5e it is...

 

[AceCannon]

Stay with cat5 for this application, unless you are using the retrofit database hub. First, there is only 1 additional pair of wires using cat5 (see the M1DBH instructions). The orange and green wires are paralleled. One nice thing about the Elk M1DBH is that it gives you access to the additional pair (blue +/-) of conductors. You can use this extra pair to double the conductors for power or send an audio signal to keypad locations.

I'm having a conceptual problem here. . . how would you extract the blue/wht pair from the DBH hub end to double up the power leads with brn/wht? Just not crimp the pair into the RJ45?

 

[CORT]

Stay with cat5 for this application, unless you are using the retrofit database hub. First, there is only 1 additional pair of wires using cat5 (see the M1DBH instructions). The orange and green wires are paralleled. One nice thing about the Elk M1DBH is that it gives you access to the additional pair (blue +/-) of conductors. You can use this extra pair to double the conductors for power or send an audio signal to keypad locations.

I'm having a conceptual problem here. . . how would you extract the blue/wht pair from the DBH hub end to double up the power leads with brn/wht? Just not crimp the pair into the RJ45?

First, the Cat5 cable should be terminated as any Cat5 cable with all the pairs in the usual positions on the RJ45 connector. On the database hub wire short a jumper from the traditional positive terminal to the "spare 1" terminal, and again on the database hub wire a short jumper from the traditional negative terminal to the "spare 2" terminal. Now, you should have 12V on blue + and ground on blue - (double check these instructions with a volt meter to be sure I don't have polarity reversed). At your peripheral (keypad) ends of wires coming from the database hub, connect all the positive leads (solid brown and solid blue (again, double check polarity because I could be wrong)) and connect all the negative leads (white stripe brown with white stripe blue). Doubling up the 24 ga wires in this fashion is the equivalent of running 21 ga power wires.

Here is a closer picture of the M1DBH connector. Note that I am not using the Spare 1/2 connections. This is just a picture so everyone can see the DBH connector more carefully.