Handicare Raptor, Service Manual, Page: 69 / 163

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DRIVES TECHNOLOGY
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10 Electromagnetic Compatibility (EMC)
The Egis controller series has been tested for compliance with EC directive 89/336/
EEC, and the EMC requirements of EN12184, the FDA and the FCC. The guidelines in
this section will help you to make sure that your scooter installation will easily meet the
requirements of the directive. You should consider EMC and perform relevant tests as
early as possible in the design phase.
10.1 Emissions
A typical scooter and Egis installation have been type tested and have passed the
requirements of CISPR 11 and FCC CFR47 part 15.
Observe the following recommendations to minimize radio frequency emissions:
10.1.1 Motor suppression
Solder a suitable suppression capacitor between the brush holders of the motor,
inside the motor case. Keep the lead length as short as possible. We recommend a
value of 4.7nF 250V AC ceramic. The maximum value you should use is 10nF. A typical
type is Roderstein WY0472MCMCF0K.
10.1.2 Cables
You do not need to use screened battery and motor looms, but:
• Keep the length of all wiring to a minimum.
• Make sure the loop area of the wiring is minimized. Route the positive and
negative wires to each motor together. Route the battery positive and negative
wires together. Where possible, route the battery and motor looms together.
• Secure the motor and battery looms to the scooter chassis over as much of their
length as is practical.
• Do not use the controller connectors as junction points for the battery
connections. Separate junction points away from the Egis should be provided
for the other scooter electrical functions.
10.2 Immunity
The Egis controller has been stringently tested for susceptibility to electromagnetic
radiation over the frequency range 26MHz to 1GHz. The installations passed the FDA
requirements and the proposed requirements of EN12184.
Follow the recommendations in section 10.1.2 to ensure maximum immunity to
electromagnetic radiation.
10.3 Electro-Static Discharge (E.S.D.)
There are various international standards currently under development for this aspect
of the system’s performance. At present, most of the standards are specifying the
system to be tested to requirements of IEC801-2 Severity Level 3. Tests are carried out
at 8kV air discharge (to non-conductive surfaces) and 6kV contact discharge (to
conductive surfaces).
E.S.D. produces very fast pulses of electrical energy which, if allowed to enter an