Omron RX2 Series User Manual page 130

High-function general-purpose inverter

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c) In case of external filter for C2, an additional note is required according to EN61800-3 that "this

product may emit high frequency interference in residential areas which may require additional

EMC measures".

d) According to the EN6100-3-12, an additional AC reactor or DC choke should be installed for

reducing harmonics in power line.

3. Wiring requirements

a) A shielded wire (screened cable) must be used for motor wiring, and the length of the cable must

be according to the following table.

b) The carrier frequency must be set according to the following table to meet an EMC requirement.

c) The main circuit wiring must be separated from the control circuit wiring.

4. Environmental requirements (to be met when a filter is used)

a) 3G3RX2 series inverter that is activated built-in EMC filter must be according to 3G3RX2 series

specifications.

• For the power supply lines of the inverter, use a shield braided cable with a minimum cable length,

and connect via an EMC compliant input noise filter.

• Ground the cable shield.

• Keep the ground cable as short as possible. For 400-V class inverters, the ground terminal must be

connected to the neutral point of a power supply. Also ground the metal control panel as well as the

door simultaneously.

• Use shield braided cables also for connection between the inverter and the motor. Keep the cable as

short as possible at a length 20 m or less, with the cable shield grounded. Installing a clamp filter

near the inverter output terminals is an effective countermeasure.

• Connect the cable shield directly to an earth (ground) plate with a conductive cable clamp.

• With the motor frame grounded directly, connect the ground cable from the motor directly to an EMC

compliant input noise filter.

• For the control panel door, use a conductive gasket to improve the shielding effect.

• In the same control panel, do not install equipment that generates by design electromagnetic waves,

especially radio waves.

Cable length

High-function General-purpose Inverter RX2 Series User's Manual

Cable length

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