Omron DeviceNet 3G8F7-DRM21-E, Руководство по эксплуатации

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xviii
Components
7
6-3 Conformance to EC Directives
DeviceNet products that meet EC directives must be installed as follows:
1,2,3... 1. Used 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.
2. DeviceNet products that meet EC directives also meet the common emis-
sion standard (EN61000-6-4). When DeviceNet products are built into
equipment, however, the measure necessary to ensure that the standard
is met will vary with the overall configuration of the control panel, the other
devices connected to the control panel, and other conditions. You must
therefore confirm that EC directives are met for the overall machine or de-
vice, particularly for the radiated emission requirement (10 m).
The following examples show means of reducing noise.
1,2,3... 1. Noise from the communications cable can be reduced by installing a ferrite
core on the communications cable within 10 cm of the DeviceNet PCI
Board.
2. Keep DeviceNet communications cables as short as possible and ground
to 100
Ω
min.
7 Components
Be sure that you have received the following components.
• One PCI Board (with communications connector)
• One installation disk (CD-ROM) for Scanner SDK
• One operation manual (this manual)
• One User Registration Card (which also serves as the software usage
license agreement)
Ferrite Core (Data Line Filter): 0443-164151 (manufactured by Nisshin Electric Co.)
30 mm
13 mm
29 mm
33 mm
Impedance Specifications
25 MHz: 156
Ω
100 MHz: 250
Ω