Page 3Pro-150 controller instructions
3Safety
Electric motors and batteries are dangerous. Any
motor controller can only operate properly in a
properly designed and functioning environment.
The Pro-150 can deliver short-term currents in excess
of 150 amps. Batteries of the sort commonly used
can delivered a huge mount more current: faulty
wiring or components can therefore cause the
batteries, the motor and their wiring to be a potential
fire risk.
A digital controller performs checks on its wiring as
it is switched on, and also does certain checks 'on the
fly' during operation. These checks should catch
most faults (inside the controller, as well as outside)
but conditions of operation, programming and use are
outside our control and 4QD can accept no liability
for the results of any fault.
Suggestions for wiring etc are given in good faith
and will suit most customers. 4QD can however
accept no liability for the design of your particular
machine: it is up to the machine manufacturer to
make sure that the machine is safe under any and all
fault conditions.
Circuit breaker
Faults in the battery or motor wiring pose a fire risk,
as well as introducing the possibility of uncontrolled
operation. You should make sure your batteries have
adequate circuit breakers to disconnect them in the
event of such fault, or in he event of unforeseen
circumstances where the power must be
disconnected.
Mechanical braking
In a controller with regenerative braking, mechanical
brakes are hardly used. However, it is the battery that
is doing the actual braking, not the controller. Faults
in the battery or any of the power wiring can
therefore render regenerative braking inoperative.
Mechanical braking should then be fitted as a safety
precaution.
Mounting
The controller must be mounted so that water and
dirt cannot contaminate it. The metal base plate
must not be modified as this will produce metal
swarf Such contamination is likely to compromise
the controller's safety features and can make it
behave in an unsafe manner or even destroy it.
Such damage caused by contamination will not be
repaired under the guarantee.
If water or other contamination does enter the
controller you must disconnect the battery
immediately and clean or thoroughly dry out the
controller before re-connecting the battery.
The unboxed controller has no protection against
contamination, so should not be used in
environments where this is a possibility.
Metal swarf is the most dangerous kind of
contamination, therefore never cut drill file or work
metal in any way near to the controller or the motor
unless properly sealed. In particular, never modify
the base plate while it is attached to the controller!
The boxed controller, if properly mounted, has
reasonable protection against rain etc.
The unboxed controller (or without its cover) and the
display both have full battery voltage present on
them: take great care that no conducting object or
contamination touches them while the battery is
connected. This is particularly likely if you are
accessing them, for instance to alter the performance.
Handling
The capacitors in the Pro-150 can retain charge for a
long while after the battery is disconnected so
immediately after disconnecting the batteries turn on
the ignition for a few seconds to discharge them.
