Conformance To Ec Directives; Relay Output Noise Reduction Methods - Omron ZEN Operation Manual

Conformance to EC Directives

Note
4-3 Conformance to EC Directives
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Relay Output Noise Reduction Methods

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.
Applicable EMC (Electromagnetic Compatibility) standards are as
follows:
EMS (Electromagnetic Susceptibility): EN61000-6-2
EMI (Electromagnetic Interference):
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 for the ZEN (EN61131-2).
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 must be installed within a control panel.
2. You must use reinforced insulation or double insulation for the DC
power supplies used for the communications power supply and I/
O power supplies.
3. ZEN models complying with EC Directives also conform to the
Common Emission Standard (EN50081-2). 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.
The ZEN conforms to the Common Emission Standards (EN50081-2)
of the EMC Directives. However, noise generated by relay output
switching may not satisfy these Standards. In such a case, a noise fil-
ter must be connected to the load side or other appropriate counter-
measures must be provided external to the ZEN.
Countermeasures taken to satisfy the standards vary depending on
the devices on the load side, wiring, configuration of machines, etc.
Following are examples of countermeasures for reducing the gener-
ated noise.
EN50081-2
(Radiated emission: 10-m regulations)
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