K3HB-R datasheet(31/32 Pages) OMRON

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Digital Indicators

K3HB-R/-P/-C

20.Do not pull the DeviceNet communications cables with excessive

force or bend them past their natural bending radius.

21.Do not connect or remove connectors while the DeviceNet power

is being supplied. Doing so will cause product failure or

malfunction.

22.Use cables with heat resistance of 70

°C min.

■ Noise Countermeasures

1. Do not install the product near devices generating strong high-

frequency waves or surges, such as high-frequency welding and

sewing machines.

2. Mount a surge suppressor or noise filter to peripheral devices

generating noise, in particular, motors, transformers, solenoids,

and magnet coils.

3. In order to prevent inductive noise, wire the lines connected to the

terminal block separately from power lines carrying high voltages

or currents. Do not wire in parallel with or in the same cable as

power lines. Other measures for reducing noise include running

lines along separate ducts and using shield lines.

Example of Countermeasures for Inductive Noise on

Input Lines

4. If a noise filter is used for the power supply, check the voltage and

current, and install the noise filter as close to the product as

possible.

5. Reception interference may occur if the product is used close to a

radio, television, or wireless.

Digital

Indicator

Line filter

Surge

absorber

Digital

Indicator

−

2 conductors

with shield

Signal

input

−

Digital

Indicator

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