Precautions For Safe Use - Omron DEVICENET SAFETY - 04-2005 Operation Manual

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Precautions for Safe Use

Handle with care
Do not drop the DST1 to the ground or excessive vibration or mechanical shocks. The DST1 may be dam-
aged and may not function properly.
Installation and storage environment
Do not use or store the DST1 in any of the following locations.
• Locations subject to direct sunlight.
• Locations subject to temperatures or humidity outside the range specified in the specifications.
• Locations subject to condensation as the result of severe changes in temperature.
• Locations subject to dust (especially iron dust) or salts
• Locations subject to dust (especially iron dust) or salts.
• Locations subject to water, oil, or chemicals.
• Locations subject to shock or vibration.
Take appropriate and sufficient countermeasures when installing systems in the following locations. Inappro-
priate 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.
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 incorporated to this product), not to
drop out of rails by vibration etc.
• Spacing should be available around the DST1 at least 50mm from its top and bottom surfaces for venti-
lation and wiring.
Installation/ Wiring
• Use the following to wire external I/O devices to the DST1.
Solid wire
Standard (Flexible) wire 0.34 ~ 1.5 mm2 AWG 22 ~ 16
• Disconnect the DST1 from power supply when wiring. Devices connected to DST1 may operate unex-
pectedly.
• Apply properly specified voltages to the DST1 inputs. Applying inappropriate 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 Nm).
• Incorrect wiring may lead to loss of safety function. Wire conductors correctly and verify the operation of
the DST1 before commissioning the system in which DST1 is incorporated.
• After wiring is completed, be sure to remove label for wire clipping prevention 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 rein-
forced insulations
• DC power supply satisfies the requirement for class 2 circuits or limited voltage/current circuit stated in
UL 508.
• 20ms or over of the output hold time.
12
0.2 ~ 2.5 mm2 AWG 24 ~ 12
Standard wire should be processed with insulation-covered bar terminal
(DIN46228-4 standard compatible type) at its ends before using for connec-
tion.