Monarch nice3000 User Manual

12 EMC NICE3000
new
User Manual
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12
12.7 Shielded Cable
12.7.1 Shielded Cable Requirements
The shielded cable must be used to satisfy the EMC requirements of CE marking. Shielded cables are
classied into three-conductor cable and four-conductor cable. If conductivity of the cable shield is not
sufcient, add an independent PE cable, or use a four-conductor cable, of which one phase conductor is
PE cable.
The three-conductor cable and four-conductor cable are shown in the following gure.
PE
PE conductor
and shield
Shield
Shield
PE
PE
Shield
To suppress emission and conduction of the radio frequency interference effectively, the shield of the
shielded cable is cooper braid. The braided density of the cooper braid should be greater than 90% to
enhance the shielding efciency and conductivity, as shown in the following gure.
Cable core
Internal insulator
Copper braid
Copper shield
Insulation jacket
For grounding of the shielded cable, see section 3.2.2.
12.7.2 Cabling Requirements
●
The motor cable and PE shielded conducting wire (twisted shielded) should be as short as
possible to reduce electromagnetic radiation and external stray current and capacitive current of
the cable. If the motor cable is over 100 meters long, an output lter or dv/dt reactor is required.
●
It is recommended that all control cables use shielded cables.
●
The motor cables must be far away from other cables. The motor several controllers can be laid
in parallel.
●
It is recommended that the motor cables, power input cables and control cables be laid in
different ducts. To avoid electromagnetic interference caused by rapid change of the output
voltage of the controller, the motor cables and other cables must not be laid side by side for a
long distance.
●
If the control cable must run across the power cable, make sure they are arranged at an angle of
close to 90°. Other cables must not run across the controller.
●
The power input and output cables of the controller and weak-current signal cables (such as
control cable) should be laid vertically (if possible) rather than in parallel.

Monarch nice3000 Specifications

General

Brand	Monarch
Model	nice3000
Category	Controller
Language	English