Emc Guide Line; Block Diagram Of Power Section - gefran ADL500 Quick Start Up Manual, Specification And Installation

Vector inverter for lifts with synchronous/asynchronous motors

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Table Of Contents

Table of Contents

7.2.4 EMC guide line

In a domestic environment, this product may cause radio inference, in which case supplementary mitigation meas-

ures may be required.

Warning!

The converters are protected in order to be used in industrial environments where, for immunity purposes, large

amounts of electromagnetic interference can occur. Proper installation practices will ensure safe and trouble-free

operation. If you encounter problems, follow the guidelines which follow.

Attention

Check for all equipment in the cabinet are well grounded using short, thick grounding cable connected to a

common star point or busbar. Better solution is to use a conductive mounting plane and use that as EMC ground

reference plane.

Flat conductors, for EMC grounding, are better than other type because they have lower impedance at higher

frequencies.

Make sure that any control equipment (such as a PLC) connected to the inverter is connected to the same EMC

ground or star point as the inverter via a short thick link.

Connect the return ground from the motors controlled by the drives directly to the ground connection (

associated inverter.

Separate the control cables from the power cables as much as possible, using separate trunking, if necessary at

90º to each other.

Whenever possible, use screened leads for the connections to the control circuitry

Ensure that the contactors in the cubicle are suppressed, either with R-C suppressors for AC contactors or

'flywheel' diodes for DC contactors fitted to the coils. Varistor suppressors are also effective. This is important when

the contactors are controlled from the inverter relay.

Use screened or armored cables for the motor connections and ground the screen at both ends using the cable

clamps.

Use power shield kit to connect shield of motor cable to drive.

Note!

For further information regarding electro-magnetic compatibility standards, according to Directive 2014/30/EU, conformity checks carried out on Gefran

appliances, connection of filters and mains inductors, shielding of cables, ground connections, etc., consult the "Electro-magnetic compatibility guide"

(1S5E84) you can download from www.gefran.com.