Emerson Affinity, Руководство пользователя

Страница: 83 / 274

Safety
Information
Product
Information
Mechanical
Installation
Electrical
Installation
Getting
Started Basic
parameters
Running
the motor
Optimization
SMARTCARD
operation
PC tools
Advanced
parameters
Technical
Data
Diagnostics
UL Listing
Information
Affinity User Guide
83
Issue Number: 5 www.controltechniques.com
Cable layout
Figure 4-23 indicates the clearances which should be observed around
the drive and related ‘noisy’ power cables by all sensitive control signals
/ equipment.
Figure 4-23 Drive cable clearances
N
Any signal cables which are carried inside the motor cable (i.e. motor
thermistor, motor brake) will pick up large pulse currents via the cable
capacitance. The shield of these signal cables must be connected to
ground close to the motor cable, to avoid this noise current spreading
through the control system.
4.11.4 Compliance with EN 61800-3:2004 (standard
for Power Drive Systems)
Meeting the requirements of this standard depends on the environment
that the drive is intended to operate in, as follows:
Operation in the first environment
Observe the guidelines given in section 4.11.5 Compliance with generic
emission standards on page 84. An external EMC filter will always be
required.
Operation in the second environment
In all cases a shielded motor cable must be used, and an EMC filter is
required for all Affinity drives with a rated input current of less than 100A.
The drive contains an in-built filter for basic emission control. In some
cases feeding the motor cables (U, V and W) once through a ferrite ring
can maintain compliance for longer cable lengths. The requirements of
operating in the second environment are met, depending on the motor
cable length for 3kHz switching frequency as stated in Table 4-15.
Table 4-15 Second environment emission compliance
Key:
Restricted:EN 61800-3:2004 second environment, restricted distribution
(Additional measures may be required to prevent
interference)
Unrestricted:EN 61800-3:2004 second environment, unrestricted
distribution
For longer motor cables, an external filter is required. Where a filter is
required, follow the guidelines in section 4.11.5
Compliance with generic
emission standards .
Where a filter is not required, follow the guidelines given in section
4.11.3
General requirements for EMC on page 82.
Refer to section 12.1.23 Electromagnetic compatibility (EMC) for further
information on compliance with EMC standards and definitions of
environments.
Detailed instructions and EMC information are given in the
EMC Data
Sheet which is available from the supplier of the drive.
This is a product of the restricted distribution class according
to IEC 61800-3
In a residential environment this product may cause radio
interference in which case the user may be required to take
adequate measures.
Optional braking resistor and overload
Do not place sensitive
(unscreened) signal circuits
in a zone extending
300mm (12”) all around the
Drive, motor cable, input
cable from EMC filter and
unshielded braking resistor
cable (if used)
300mm
(12in)
NOTE
CAUTION
Drive
size
Filter Voltage
Motor cable length (m)
0 to 4 4 to 10 10 to 100
1
In-built Any Unrestricted Restricted
In-built and
ferrite ring
Any Unrestricted Restricted
2
In-built Any Restricted
In-built and
ferrite ring
Any Unrestricted Restricted
3 In-built Any Restricted
4 In-built Any Restricted
5 In-built
200 & 400 Unrestricted
690 Restricted
6 In-built Any Unrestricted
The second environment typically includes an industrial low-
voltage power supply network which does not supply
buildings used for residential purposes. Operating the drive in
this environment without an external EMC filter may cause
interference to nearby electronic equipment whose sensitivity
has not been appreciated. The user must take remedial
measures if this situation arises. If the consequences of
unexpected disturbances are severe, it is recommended that
the guidelines in section 4.11.5
Compliance with generic
emission standards be adhered to.
CAUTION