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Dynamic Electronic Controllers have been tested on typical vehicles to confirm
compliance with the following appropriate EMC standards:
Emissions:
CISPR22, class B
Susceptibility:
IEC1000-4-3
ESD:
IEC1000-4-2
Compliance levels and set-up as per ISO 7176, part 21.
National and international directives require confirmation of compliance on
particular vehicles. Since EMC is dependant on a particular installation, each
variation must be tested. The guidelines in this section are written to assist with
meeting EMC requirements.
Minimising Emissions
Motors :
Motor brushes generate electromagnetic emissions. It may be
necessary to fit capacitors between the brush holders and motor case.
Ensure the leads are kept as short as possible.
A suitable capacitor is 4n7, 250V Ceramic.
Wiring :
Keep wire lengths as short as practical for a tidy layout.
Minimise any wire loops, particularly loops of single wires as
opposed to wire pairs.
Endeavour to run wires in pairs or bunches.
Where practical, tie cables to wheelchair frame.
Immunity to Radiated Fields
Follow the wiring recommendations for minimising emissions.
Immunity to ESD
Follow the wiring recommendations for minimising emissions.
Ensure all vehicle sub-frames are electrically connected.
Ensure speed setting potentiometers are electrically connected to the
vehicle frame.
Do not leave connections unnecessarily exposed.
Summary of Contents for DX Power Module PMB
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