Devicenet Manuals - Omron DeviceNet CV Series Operation Manual

DeviceNet Manuals

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7 DeviceNet Manuals
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2. Use reinforced insulation or double insulation for the DC power supplies
used for the communications power supply, internal circuit power supply,
and the I/O power supplies.
3. DeviceNet products that comply with EC Directives also conform to the
Common Emission Standard (EN50081-2). Radiated emission character-
istics (10-m regulations) may vary depending on the configuration of the
control panel used, other devices connected to the control panel, wiring,
and other conditions. You must therefore confirm that the overall machine
or equipment complies with EC Directives.
4. DeviceNet products that comply with EC Directives have configurations
with less than 30 m of I/O wiring, and less than 10 m of power supply wir-
ing.
The following examples shows how to reduce noise.
1. Noise from the communications cable can be reduced by installing a ferrite
core on the communications cable within 10 cm of the DeviceNet Master
Unit.
Ferrite Core (Data Line Filter): LF130B (manufactured by Easy Magnet Co.)
Impedance specifications
25 MHz: 105
100 MHz: 190
30 mm
13 mm
2. Wire the control panel with as thick and short cables as possible and
ground to 100 Ω min.
3. Keep DeviceNet communications cables as short as possible and ground
to 100 Ω min.
The following manuals are available for information relating to DeviceNet. Be
sure to thoroughly read and understand the applicable manuals before install-
ing or operating DeviceNet devices and make sure that you are using the
most recent version of the manual.
DeviceNet Operation Manual (W267)
Describes the functions and applications of DeviceNet including available
Master Units, their specifications, functions, operating procedures, and appli-
cations. Always read this manual thoroughly before installing or operating
DeviceNet devices.
DeviceNet Slaves Operation Manual (W347)
Describes available Slave Units, their specifications, functions, operating pro-
cedures, and applications. This manual has been separately produced in
response to the increase in Slave Unit models since the production of the
DeviceNet Operation Manual (W267) . Use this manual in conjunction with the
DeviceNet Operation Manual (W267) .
32 mm
31.5 mm
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