Danaher Motion B8961, Operator'S Manual

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B8961 and B8962 User Manual
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methods used.There are only a few things a machine designer can do to minimize
the chance of EMC conflicts between sub-systems in his final product,and
between his final product and other products.The first is to use products and com-
ponents that have a sufficient level of EM immunity to assure that their operation
will not be af fected by other equipment.In some cases,such as sensitive measuring
equipment,the very function of the device requires it to be sensitive to electro-
magnetic phenomena.A second method is to physically separate the sensitive com-
ponents from the rest of the machine.In many cases,this is also impossible.A third
method is to specify components that have an “acceptable”level of emissions.
Properly installed,these components will not affect the operation of other compo-
nents and machines.In the European Union,what constitutes “acceptable”has been
formally defined.
The following pages contain information necessary to install and operate IDC
brushless servo Smart Drives in compliance with European EMC regulations (see
the attached Declaration of Conformity for specific regulation details).It is certainly
NOT necessary to implement all of these procedures to get an IDC Smart Drive up
and running.Though proactively addressing EMC concerns is always a good prac-
tice,unless the final machine needs to meet some kind of EMC standard,no special
precautions are needed in most cases.The Smart Drives and the equipment they
normally operate around have sufficient levels of immunity to operate successfully.
These installation guidelines were developed as a result of IDC’s own testing
process.They are meant only as recommendations.In some applications,EMC regu-
lations may be met without implementing all these suggestions.In others,more
extensive shielding and filtering may be needed.As always,it is the responsibility of
the person taking the complete machine into service to make sure that it meets all
applicable safety and EMC specifications.
The recommendations are divided into 5 categories.The first,Shielding and
Separation,covers basic control shielding and panel layout techniques.The second
section,Grounding,covers some basic Radio Frequency (RF) grounding rules of
thumb.The next section,Physical Layout,is intended to give a specific example of
an EMC compliant panel layout.The fourth section covers AC line filtering.In order
to meet the European Union conducted emissions specifications a line filter must
be installed between the Smart Drive and power mains.The last section details
some of the steps needed to install the Smart Drive in compliance with the
European Union radiated emissions specifications.Properly shielding and ground-
ing the motor power cable is the most critical step in bringing an EMC compliant
system into service.
Separation and Shielding
Since the power of electromagnetic radiation drops off as a square function of
the distance from the source of the radiation,proper electrical panel layout an
help prevent compatibility problems.Small changes in your panel layouts can
make large differences in preventing compatibility problems.Care should be
taken in keeping sensitive electrical components,especially sensitive measurement
equipment as far away as possible from high volta ge,high power electronics
such as IDC Smart Drives.Though,before a machine builder goes to extraordinary
lengths to separate power and control electronics,it should be noted that IDC
servo drives and controls ha ve DSPs and microprocessors operating within an inch
of the drive power electronics.