Crestron DIN-1DIMU4, Руководство по эксплуатации и установке, Страница: 33 / 36

Crestron DIN-1DIMU4 DIN Rail Universal Dimmer
Cable Length Equation
L = Length of run (or chain) in feet
R = 6 Ohms (Crestron Certified Wire: 0.75 mm (18 AWG))
P = Cresnet power usage of entire run (or chain)
2
L <
40,000
R x P
Where:
Make sure the cable length value is less than the value calculated on the
right side of the equation. For example, a Cresnet run using 0.75 mm
2
(18 AWG) Crestron Certified Wire and drawing 20 watts should not
have a length of run more than 101 meters (333 feet). Cresnet HP cannot
be used.
NOTE: All Crestron certified Cresnet wiring must consist of two
twisted pairs. One twisted pair is the +24V conductor and the GND
conductor and the other twisted pair is the Y conductor and the Z
conductor.
Strip and Tin
Wire
When daisy chaining Cresnet units, strip the ends of the wires carefully
to avoid nicking the conductors. Twist together the ends of the wires
that share a pin on the network connector and tin the twisted connection.
Apply solder only to the ends of the twisted wires. Avoid tinning too far
up the wires or the end becomes brittle. Insert the tinned connection into
the Cresnet connector and tighten the retaining screw. Repeat the
procedure for the other three conductors.
Add Hubs Use of a Cresnet Hub/Repeater (DIN-HUB) is advised whenever the
number of Cresnet devices on a network exceeds 20 or when the
combined total length of Cresnet cable exceeds 914 meters (3000 feet).
Operations & Installation Guide – DOC. 6668D DIN Rail Universal Dimmer: DIN-1DIMU4
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