PRO-150 V1.0 11/18
Page 19
www.4qd.co.uk
Parameter Settings
Parameter 01 and 02: Forward ramp times
These are the times for acceleration and deceleration in forward drive. The display
is in seconds and the values are between 0.1 S and 9.9 S.
Do not choose too fast an acceleration or deceleration for your machine as this
may generate voltage spikes which can shorten the operating life of the on-board
relays.
Parameter 03: Max speed
This controls the maximum percentage of the battery voltage that can be fed to the
motor.
Parameters 04, 05 and 06: (reverse)
These are as parameters 01, 02 and 03, but for reverse rather than forward.
Some machines, e.g. golf buggies, are unsafe to drive fast in reverse, so different
parameters may be required.
Parameter 07: Dead band
This is most useful in joystick mode, where the centre of movement of the joystick
may have a tendency to wander. The default value is 5% of the available throttle
signal.
Parameter 08 and 09: Parking brake.
These control the parking brake: ignore if your motor does not have one fitted.
As the Pro-150 starts to apply power to the motor, it applies power to the parking
brake to release it. Parameter 09 defines how much power is applied to the motor
before the brake is released.
Too low a value will allow the machine to roll back on a hill start, too high a value
and the motor will start with a jerk.
As the motor stops, there is a short delay before the brake power is removed to
allow the brake to operate. Parameter 08 defines this delay. Typical values will be
1/2 to 1 second.
Parameter 10: HPLO High Pot Lock Out
If the ignition is turned on with the pot not at zero the Pro-150 could start driving
immediately, the HPLO function prevents this happening.
Parameter 10 sets the pot level which is considered high. Zero means the level is
the same as the dead-band. 99 is full pot deflection and effectively turns HPLO off.
If the pot is above the HPLO level at switch on the Pro-150 will not operate until the
pot is turned low.
