Crestron electronic C2N-SPWS300 R

Operations Guide – DOC. 8190 System Power Supply: C2N-SPWS300 • 7

CAUTION: Use only Crestron power supplies for Crestron equipment. Failure to

do so could cause equipment damage or void the Crestron warranty.

NOTE: When installing network wiring, refer to the latest revision of the wiring

diagram(s) appropriate for your specific system configuration, available from the

Downloads | Product Manuals | Wiring Diagrams section of the Crestron website

(www.crestron.com).

When calculating the wire gauge for a particular network run, the length of the run

and the power factor of each network unit to be connected must be taken into

consideration. If network units are to be daisy-chained on the run, the power factor

of each network unit to be daisy-chained must be added together to determine the

power factor of the entire chain. The length of the run in feet and the power factor of

the run should be used in the following resistance equation to calculate the value on

the right side of the equation.

Resistance Equation

R = Resistance (refer to table below).

L = Length of run (or c hain) in feet.

PF = Power factor of entire run (or c hain).

R < L x PF

40,000 Where:

The required wire gauge should be chosen such that the resistance value is less than

the value calculated in the resistance equation. Refer to the table after this paragraph.

Wire Gauge Values

416

618

10 20

15 22

13 Doubled CAT5

8.7 Tripled CAT5

NOTE: All network 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.

NOTE: When daisy chaining network units, always twist the ends of the incoming

wire and outgoing wire that share a pin on the network connector. After twisting the

ends, tin the twisted connection with solder. Apply solder only to the ends of the

twisted wires. Avoid tinning too far up or the tinned end becomes brittle and breaks.

After tinning the twisted ends, insert the tinned connection into the network

connector and tighten the retaining screw. Repeat the procedure for the other three

network conductors.