Elettronica Santerno SINUS/ISD 200 S-0.75, User Manual, Page: 17 / 206

SINUS/ISD 15P0082B8
USER MANUAL
3 - 3/14
3.1.4 EMC INSTALLATION OPTIONS
The unit, when installed for Class B operation, will be compliant with EN55011 (1991) / EN55022 91994) for
radiated emissions, as described below.
Note:
Refer to Chapter 11: “Technical Specifications” for details on Cabling Requirements.
3.1.4.1 Screening & Earthing (cubicle mounted, Class B)
Note:
The installation requirements of local safety standards must be achieved regarding the safety of
electrical equipment for machines.
The unit is installed for Class B operation when mounted inside a cubicle having 10dB attenuation between 30
and 100MHz (typically the attenuation provided by a metal cabinet with no aperture of dimension greater than
0.15m), using the internal ac supply EMC filter and having metal cabling requirements.
Note:
Radiated magnetic and electric fields inside the cubicle may be high and any components fitted inside
must be sufficiently immune.
The VSD and associated equipment are mounted onto a conducting, metal mounting panel. Do not use cubicle
constructions that use insulating mounting panels or undefined mounting structures. Cables between the VSD
and motor must be screened or armoured and terminated at the entrance to the cubicle.
Single VSD - Single Motor
Apply a single point earthing strategy for a single VSD mounted in a cubicle as shown below.
The protective earth connection (PE) to the motor must be run inside the screened cable between the motor and
VSD and be connected to the motor protective earth terminal on the VSD.
Single VSD - Multiple Motors
Note:
Refer to Chapter 13: “Application Notes” - Using Multiple Motors on a Single Inverter.
IMPORTANT:
If connecting multiple motors to a single VSD, use a star junction point for motor cable
connections, refer to Star Point Earthing below. Use a metal box with entry and exit cable glands
to maintain shield integrity.
AC Supply
Motor
motor cable screen
PE
PE
SINUS/
ISD
PE
Figure 3-1 EMC and Safety Earthing Cabling Figure 3-1 EMC and Safety Earthing Cabling