xiv
EC Directives
6
• Install all Units according to instructions in the operation manuals.
Improper installation may cause faulty operation.
• Provide proper shielding when installing in the following locations:
• Locations subject to static electricity or other sources of noise.
• Locations subject to strong electromagnetic fields.
• Locations subject to possible exposure to radiation.
• Locations near to power supply lines.
• Be sure to tighten Backplane screws, terminal screws, and cable connec-
tor screws securely.
• Do not attempt to take any Units apart, to repair any Units, or to modify
any Units in any way.
!Caution
The following precautions are necessary to ensure the general safety of the
system. Always heed these precautions.
• Provide double safety mechanisms to handle incorrect signals that can be
generated by broken signal lines or momentary power interruptions.
• Provide external interlock circuits, limit circuits, and other safety circuits in
addition to any provided within the PLC System to ensure safety.
• Always follow electrical specifications for terminal polarity, communica-
tions path wiring, power supply wiring, and I/O jumpers. Incorrect wiring
can cause failures.
• Although the Environment-resistive Slaves have IP66 or IP67 degree of
protection, do not use them in applications where the Slave is always sub-
merged in water.
6
EC Directives
DeviceNet products conform to EMS and low-voltage level directives as fol-
lows:
EMC Directives
OMRON devices that comply with EC Directives also conform to the related
EMC standards, so that they can more easily be built in to other devices or the
overall machine. The actual products have been checked for conformity to
EMC standards. Whether they conform to the standards in the system used
by the customer, however, must be checked by the customer.
EMC-related performance of the OMRON devices that comply with EC Direc-
tives will vary depending on the configuration, wiring, and other conditions of
the equipment or control panel on which the OMRON devices are installed.
The customer must, therefore, perform the final check to confirm that devices
and the overall machine conform to EMC standards.
Low-voltage Level Directives
Always ensure that devices operating at voltages of 50 to 1,000 V AC and 75
to 1,500 V DC meet the necessary safety standard for the PLC (EN61131-2).
DeviceNet products that comply with EC Directives must be installed as fol-
lows:
1,2,3...
1.
DeviceNet Units are designed for installation inside control panels. All De-
viceNet Units must be installed within control panels.
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