Conformance To Ec Directives - Omron ZEN Operation Manual

Conformance to EC Directives

Applicable Directives
• EMC Directives
• Low Voltage Directive
Concepts
EMC Directives
OMRON devices that comply with EC Directives also conform to the related EMC
standards so that they can be more easily built into other devices or the overall machine.
The actual products have been checked for conformity to EMC standards. The ZEN
complies with IEC/EN61131-2 clause 8. Whether the products 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 Directives 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 Directive
Always ensure that devices operating at voltages of 50 to 1,000 VAC and 75 to 1,500
VDC meet the required safety standards. The ZEN complies with IEC/EN61131-2 clause
11 except for 11.7.2.2.
Conformance to EC Directives
The ZEN complies with EC Directives. To ensure that the machine or device in which the
ZEN is used complies with EC Directives, the ZEN must be installed as follows:
1. The ZEN is an open-structure device. To meet the requirements of IEC/EN 61131-2
for open-structure devices, the ZEN must be mounted inside a control panel and
protected from mechanical impact as described on page 36.
2. Do not exceed a cable length of 10 m when connecting transistor outputs.
3. Burst immunity will no longer meet IEC/EN 61131-2 requirements if an Expansion I/O
Unit with DC inputs is connected to a CPU Unit with an AC power supply.
4. ZEN models complying with EC Directives also conform to the Common Emission
Standard (IEC/EN61131-2 clause 8). Radiated emission characteristics (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.
Precautions
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