Handicare Raptor, Service Manual, Page: 58 / 163

PG
DRIVES TECHNOLOGY
27
E
GIS
- I
NSTALLATION
SK75326/6
6 Control Connections
The control connections are via a 14 way Molex Microfit 3.0 connector. The mating
crimps and connector housing are Molex types 43030-0007 and 43025-1400
respectively. PGDT can supply these parts or Molex can be contacted directly. An
optional rubber sealing boot is available for the connector, please contact PGDT for
details.
Each control connection is described below. Refer also to the connection diagrams,
Figures 1 and 2, and the controller data sheet.
6.1 24V, 0.5A Fused
Pin 1 is a battery positive supply for low current electrical circuits in the tiller. It is protected
by a 0.5A self-resetting fuse within the Egis controller. Higher fuse ratings may be
possible, please contact PGDT
6.2 On/Off Switch
Pin 8 is the battery positive supply to the controller from the on/off switch. The maximum
power consumption of the controller via this connection will not exceed 1A.
The scooter wiring should be of sufficient gauge to ensure the voltage difference
between Pin 1 and Pin 8 is less than 0.25V. If auxiliary circuits, such as lighting, are
deriving their power from Pin 1, then it is absolutely essential that attention is given to
the gauge of the wire used.
This connection should have no external capacitance
connected to it, and care should be taken not exceed the
fuse rating if lights or other auxiliary functions are connected.
Large capacitances connected between pin 5 and 0V may affect the ability of the S-
drive to switch on or off reliably. If it is desired to connect a large capacitance, for
example to damp a battery gauge voltmeter or to suppress a horn sounder, then
connection should be made between battery 24V (pin 1) and 0V.
6.3 Throttle Potentiometer
Pins 5, 7 and 12 are the connections to the throttle potentiometer. Both wig-wag
(center off) and single-ended throttle configurations can be used but you should
ensure the controller is programmed to the correct type, refer to the SP1 Programming
and Diagnostic Technical Manual and the controller data sheet.
The value of the potentiometer should be between 2k
Ω
and 10k
Ω
± 20%. If the full
electrical span of the potentiometer is not used, a throttle gain can be programmed
such that full speed can be achieved.
With a 25K speed limiting potentiometer the scooter’s speed will be 30% of the
programmed maximum speed. However, this will be affected in any of the following
conditions apply:
1. An ISO test resistor is fitted.
2. A throttle mechanism with reduced mechanical travel meaning the throttle
potentiometer does not reach full electrical travel.