Handicare Raptor, Руководство по обслуживанию, Страница: 84 / 163

PG
DRIVES TECHNOLOGY
53
E
GIS
- T
ILLER
M
ODULE
SK75326/6
6 Electromagnetic Compatibility (EMC)
The controller has been tested for compliance with EC directive 89/336/EEC, and the
EMC requirements of prEN12184, 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.
6.1 Immunity and Emissions
Refer to the Electromagnetic Compatibility section in the controller’s technical manual.
6.2 Electro-Static Discharge (E.S.D.)
The tiller is the most vulnerable area on the scooter to electro-static discharges. These
discharges may cause disruption of operation or even permanent damage. The tiller
module incorporates extensive protection against E.S.D., however, you should take
the following precautions to prevent high levels of energy entering the scooter’s
electronic system.
•
The highest degree of protection can be achieved by making the tiller
enclosure, switches and other controls non-conductive. Membrane keypads in
particular provide good E.S.D. protection, keypad manufacturers will be able
to give appropriate design rule guidance. It should also be considered that
high voltages can jump through gaps in enclosures, thereby gaining access
to the electronics. Enclosures should therefore be as closed as possible.
• If controls or enclosures are conductive, a low impedance electrical
connection to the scooter’s metalwork should be provided. If such a
connection is used, it should be kept as short as possible to minimize its
electrical inductance.
• The tiller module has a connection point, ESD: this can be used to provide an
ESD drain path. The path should be via a varistor connected between the ESD
pin and the scooter’s metalwork. A suitable device is manufactured by Harris,
type GE-MOV V82ZA2.