Omron DEVICENET SAFETY - 03-2008 Operation Manual page 19

Operating Environment Precautions
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• Locations subject to shock or vibration.
Take appropriate and sufficient countermeasures when installing systems in
the following locations. Inappropriate and insufficient measures may result in
malfunction.
• Locations subject to static electricity or other forms of noise.
• Locations subject to strong electromagnetic fields
• Locations subject to possible exposure to radioactivity.
• Locations close to power supplies.
This is a class A product. In residential areas it may cause radio interference,
in which case the user may be required to take adequate measures to reduce
interference.
■
Installation/Mounting
• Use the DST1 within an enclosure with IP54 protection or higher of IEC/
EN 60529.
• Use DIN rail (TH35-7.5 according to IEC60715) for placing the DST1 into
the control board.
• Mount the DST1 to DIN rails with attachments (TYPE PFP-M, not incor-
porated to this product), not to drop out of rails by vibration etc.
• Spacing should be available around the DST1 at least 50 mm from its top
and bottom surfaces for ventilation and wiring.
■
Installation/Wiring
• Use the following to wire external I/O devices to the DST1.
Solid wire
Standard (Flexible)
wire
• Disconnect the DST1 from power supply when wiring. Devices connected
to DST1 may operate unexpectedly.
• Apply properly specified voltages to the DST1 inputs. Applying inappropri-
ate DC voltage and any AC voltages cause the DST1 to fail.
• Be sure to separate the communication cable and the I/O cable from the
high-voltage/ current lines.
• Be cautious not to have your fingers caught when attaching connectors to
the plugs on the DST1.
• Mount screw of DeviceNet Connector and I/O Connector correctly. (0.25-
0.3 N·m)
• Incorrect wiring may lead to loss of safety function. Wire conductors cor-
rectly and verify the operation of the DST1 before commissioning the sys-
tem in which DST1 is incorporated.
• After wiring is completed, be sure to remove label for wire clipping preven-
tion on the DST1 to enable heat to escape for proper cooling
■ Power Supply Selection
Use DC power supply satisfying requirements below.
• Secondary circuits of DC power supply is isolated from its primary circuit
by double insulations or reinforced insulations
2
0.2 to 2.5 mm AWG 24 to 12
2
0.34 to 1.5 mm AWG 22 to 16
Standard wire should be processed with insulation-covered
bar terminal (DIN46228-4 standard compatible type) at its
ends before using for connection.
4