GE Industrial Solutions EAK guidelines - Manual (Page 15)

EMC GUIDELINES
MAX LENGTH OF AC MOTOR’S CABLES THE CABINET
From the grounding of the screen s&cabinet of the inverter terminal strip, the supply’s cables have to measure
at max. 5 meters (16.4 feet).
E N C O D E R C A B L E S
The encoder cable must be shielded and grounded only from the side of the inverter at 360”. The female connector
on the regulation board has been foreseen for that connection, therefore it is enough to have the cable shield
connected at 360” in the conductive case of the male connector.
In order to check that the shield is not connected on the motor side remove the encoder connector from the
inverter and verify with a tester the presence of a high impedance between the shield and the metal case of the
encoder or of the motor.
MOUNTING SEQUENCE FOR FN, COMPACT AND RANGER FILTERS WITH CONVERTER AND
L I N E R E G E N C O N V E R T E R
In case of converters and line regen converetrs, these filters must be series-connected between the choke and the
AC line switch. The autotrasformer, in case of RS300 device, is always connected between the choke and regen
bridge input.
Do not connect, in any case, to the converter’s terminals.
GROUNDING OF THE FN, COMPACT AND RANGER FILTERS WITH CONVERTER AND LINE
R E G E N C O N V E R T E R
A grounding terminal’s filter must be connected directly to the panel bar, the other must be fixed to the mounting
panel as near as possible to the filter.
SEQUENCE FOR FN, COMPACT AND RANGER WITH INVERTER
In case of inverters, these filters have to be series-connected between the inverter and the AC mains. The
connection between the filter and inverter’s terminals must be done with a four pole cable, whose
is
30 cm. (12 inches). If that connection is longer, the cable must be shielded.
GROUNDING OF THE FN, COMPACT AND RANGER FILTERS WITH INVERTER
The yellow/green ground wire of the four poles cable, must be connected from one side directly to one of the two
inverter’s terminals, from the other to one of the two filters grounding terminals. The other grounding
terminals of the filter must be brought directly to the grounding bus of the cabinet.
M O U N T I N G S E Q U E N C E F O R E C F F I L T E R S
This kind of filter must be connected between the choke and the line switch, for whatever kind of devices
(inverters or converters).
Warning ! Never connect directly to the device’s terminals.