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The Porter is the latest from 4QD and is a simple, economical, general purpose analogue controller for power handling machinery including golf caddies and wheelbarrows. It will also find applications for power assisted cycles and similar machines.

It is designed to be as simple as possible to use and instal so has the simplest possible wiring - just six wires!

Another off its major features is that it will work from 12v, 24v, 36v (or any in-between voltage) without adjustment.

The -48v version has the same general performance but will work from 12 through 48v.

Contents, this page

• Specifications
• Standard version (cased)
• Board Version (bare)
• Wiring
• Potentiometers
• Prices and ordering
• More information

Specifications

• Dimensions 100 x 48 x 33 mm approximately.
• Operating voltage:
  • 36v version (standard): 12 - 36v battery
    10v to 46v may be used
  • 48v version: 12 - 48v battery
    10v to 56v may be used
• Motor current: 30a continuous (with suitable heatsink)
  40A limited
• Regenerative braking
• Acceleration and deceleration ramps: linear, fixed
  Standard times, 0-100%
  • Acceleration: 2 seconds approx.
  • Deceleration: 2 seconds approx.
  
  Ramp times can be altered for quantity orders.
• Input
  • Throttle potentiometer
    • Throttle Type: variable resistor (2 wire) 0-5K
    • Pot fault detect: 9.3K
  • Voltage source
    • 3v gives full speed.
      Source should be low impedance (must sink at least 2mA)
    • Fault detect: 7V
• Ignition: Off at zero speed or with pot fault detected.
  Automatic ramp-down at power off.
  Quiescent current when 'off' typically 3mA (24v)
• Reverse polarity protection: Automatic electronic - (no fuse or manual reset)
  Max reverse voltage, 60V

Standard version

Box size: 110 x 61 x 31mm. An aluminium fin serves as mounting and heatsink.

Wire lengths

• Motor (blue and yellow): 50cm
• Battery (red and black): 50cm
• Speed Pot (23 core): 100cm

Board Version

The board version uses the same aluminium fin as the boxed version.

Wiring

Wiring is designed to be the simplest possible - just 6 wires, 2 each for battery, motor and throttle pot. Wiring is shown on a separate page - Porter wiring diagram.

Potentiometers

The Porter can be used with any 5K potentiometer, for instance our Twist-grip throttle or plunger operated pot.

It can also be used with a 10K pot (such as our Bell Throttle assembly), but an extra resistor is required or full speed will be reached before full pot travel. Details are in the instruction manual.

If ordered with the Porter, either the Magura or the Bell throttle will be supplied pre-wired. Be sure to specify the required lead length on the throttle!

Beware of a pot marked 4K7: many of these have a tolerance of±20%. If they are 4K7 or over, they will work but values less than 4K7 will not reach full speed. The pots 4QD sell are marked 4K7 but are tested to be greater than 4k7.

Prices and ordering

More information

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