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Elk M1 keypad - 4 conductor?
Posted 17 July 2012 - 02:15 PM
Posted 17 July 2012 - 02:20 PM
Posted 17 July 2012 - 05:17 PM
As long as you don't intend on tying anything on to the M1's input or output at the keypad, you don't need more than 4 conductors at the keypad, you would be limited to 2 branches on the bus running back to the M1.
If you have multiple keypads and have the possibility for more expanders, etc. then you'll need a DBHR to have more than 2 branches using 4 conductor wiring, otherwise all the other bus devices will need a minimum of 6 conductors
Posted 17 July 2012 - 06:20 PM
you would be limited to 2 branches on the bus running back to the M1.
This needs a bit of clarification. The limitation of two branches is for the data bus at the M1. You can branch off once at the keypad or any other device until you reach the distance limitation. Just be sure to set the terminators correctly.
Edited by jpmargis, 17 July 2012 - 06:21 PM.
Posted 19 July 2012 - 08:41 PM
On the M1, you can run 2 DBHR's, which will give you 4 supervised branches each, capable of 2 "splits", so 8 terminated home runs per DBHR, so you can have 16 individual home run "splits" prior to worrying about how the bus is truly wired or it's topology, since it's doubtful that a house would have more than that many home runs that need to be connected to the bus.
Posted 19 July 2012 - 11:09 PM
Posted 19 July 2012 - 11:30 PM
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