Notes - Omega FUZZY LOGIC CN4800 Manual

5.5 NOTES

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Connection:
• No power switch and fuse are provided on this product. Install
them separately if necessary.
• Use designated compensating wire in the case of thermo-
couple input.
• Use wire with line resistance lower that 10 Ω for
thermoresistance input.
• To avoid noise induction to input wires separate from the
power and output wires also connected to your controller.
• In case of model equipped with heater break alarms, the
power supply used should be the same for the CN4800
and Heater.
• Use shielded wires for input wires. Keep them away from
output wires.
Noise:
Take the following measures when there is serious noise
induction in the external wiring:
• When using a contactor as a load on digital output such as
relay contact output and alarm output, supplement a serge
absorber to the coil side of the contactor.
• In the case of noise induction from the power supply, the use
of an insulated transformer and a noise filter is recommended.
• It is efficacious against noise induction to twist the power
wires.
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