Crestron Cresnet Network - Best Practices

18 • Cresnet® Network Design Guide — Doc. 9292A
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For termination with green (3.5mm)terminal blocks, remove approximately 1/4in.
(7mm) of insulation.
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For termination with black (5mm)terminal blocks, remove approximately 9/32in.
(7.5mm)of insulation.
6. Twist the copper strands on the individual blue and white wires. Do not twist the two wires
together.
NOTE:Twist the copper strands on each wire immediately before inserting the blue
and white wires into the connector. This helps to ensure that there are no loose
strands that could touch another connection.
7. On the connector, raise the cage clamps using the appropriate screwdriver as described
below.
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Green (3.5mm)terminal blocks use slotted screws with M2 screw heads. Use a
slotted screwdriver with a width of 9/64in. (3.5mm).
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Black (5mm)terminal blocks use slotted screws with M3 screw heads. Use a slotted
screwdriver with a width of 7/32in. (5.5mm).
8. Insert each wire into the appropriate slot on the connector that matches pin out on the
device's NETport. Typically, this is done in the following order:red (24VDC), white
(Ydata), blue (Z data), and black (ground, with or without twisted drain wire).
NOTE:Ensure the correct number of twists are used when terminating the white and
blue wires as described in step 4.
9. Secure the wires down to the connector by tightening down the cage clamp as described
below.
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For green (3.5mm) terminal blocks, tighten the cage clamp to 4.4–5.3in-lb(0.5–
0.6N-m).
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For black (5mm) terminal blocks, tighten the cage clamp to 3.5–4.4in-lb(0.4–
0.5N-m).
Best Practices
The following best practices should be followed when wiring a Cresnet network system.
CAUTION:While Cresnet devices can help to diagnose some wiring issues, certain miswirings
can cause damage to the Cresnet primary device or remote network devices. Ensure all
wiring best practices are followed as described below.
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Crestron recommends using only Crestron certified wire and cables for Cresnet
installation projects. For more information on supported Crestron cable types, refer to
Supported Cresnet Cables (on page15).