Note: The 4QDs are all single-channel controllers

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4QD-Series Controllers for Electric Scooters, Robots, and Electric Cars

4QD-150D, 4QD-200D and 4QD-300D ranges of motor speed controllers for 24v, 36v and 48v motors. They are designed to give currents in the range 100 to 300 amps making them probably the most powerful controllers in their price range. Although small they are fully electronic and need no external relays whatsoever. They have many fail-safes built in for reliable long time use and misuse.

The controllers are wide supply voltage range, 36v and 48v both working also down to below 24v, so there is no separate 24v version, the 36v version should be used.

3 basic models are available in several voltage options:
4QD-150-24/36/48: 160 amps cold
4QD-200-24/36/48: 210 amps cold
4QD-300-24/36/48: 320 amps cold

The 4QD-150, 4QD-200 and 4QD-300 are full Four-Quadrant chopper drivers suitable for speed control of battery operated motors up to 300A and voltages between 24 and 60. They give full control of forward and reverse acceleration and braking.

Input is suitable for a joystick (center zero) or for a single ended speed pot plus separate reversing switch (mode is selected on board by a moveable link). There is an on-board adjustment to alter input sensitivity. Alternatively an external pot or switch can be added to give a user top-speed control.
Also on board is an adjustable torque limit, which limits the continuous motor current, to avoid overloading smaller motors.
You can buy with confidence as the controllers come with a detailed instruction manual and we give full technical service and advice, covered by the 12 month guarantee.

For complete specifications, please download the 'Details' PDF and/or Owners Manuals. For information on the interface you will need to control this ESC, click here.

Supply
Voltage
18-45V 24/36V model
18-66V 48V model
Size 9.84 x 4.05 x 2.36" 4QD-150 & 4QD-200
11.02 x 4.05 x 2.36" 4QD-300
Weight 2.86 lb 4QD-150 & 4QD-200
3.71 lb (59.36oz) 4QD-300

 

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PRO 120 -Series Controllers for Electric Scooters, Robots, and Electric Cars

Pro 120 Mark 2 is built on the success of the Pro controller. The circuits of these are so well proven and successful that no major design was possible, but the board has been re-laid using sub-miniature resistors to give room for more features.

The Pro includes a reverse polarity protection relay. The connections are all arranged at one end of the board for ease of access once the controller is boxed. The Pro-120 is a full featured, Four Quadrant (acceleration and regenerative braking, forward and reverse) motor speed controller principally for 12v, 24v and 36v battery operation, but a 48v version is also available. Although it is similar in size to other industry standard 110 amp controllers, the power performance is considerably enhanced with no loss of reliability.

Two controllers can be coupled so two motors work as one, but with independent current limiting, giving control of currents up to 240 amps.

For complete specifications, please download the 'Details' PDF and/or Owners Manuals. For information on the interface you will need to control this ESC, click here.

Output
Current

155 Amps Intermittent
115 Amps for 1 minute
30 Amps continuous
Size 6.3 x 4.0 x 1.57" All PRO 120 series
Weight 11.36 oz (0.71 lb) All PRO 120 series

 

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VTX-Series Controllers for Electric Scooters, Robots, and Electric Cars

4QD's 'VTX' series are full feature Four Quadrant (acceleration and regenerative braking, forward and reverse) motor speed controllers for 12v-48v battery operation. The range is economical enough for toy cars and robots, yet powerful enough for use in golf buggies so it provides a very cost-effective solution for virtually every application which requires a reversing motor controller in the current range up to 100 amps.

Some possible applications are:- robots, scooters, golf buggies, miniature railways, kiddiecars, floor cleaners, caravan shifters and vehicle loaders. The VTX-40 is the baby of the range, covering currents up to 50 amps. For more demanding applications the VTX-75 will give currents up to 100 amps. For applications such as heavy golf buggies which use two motors, two controllers can be coupled so the two motors work as one, but with independent current limiting, giving control of currents up to 200 amps. This feature is also popular with miniature railways where two engines are 'double headed'. All models are available in 12v, 24v, 36v, and 48v versions

The VTX series are based on our tried and tested NCC series and are technically advanced and packed with useful features without the 'high tech overkill' which is often used as a sales gimmick. The controllers have been extensively 'value engineered' to give the best possible ratio of performance to cost. Of special interest are the independent, linear, adjustable acceleration and deceleration ramps, the 'dual ramp' automatic reversing, the thermally sensitive overcurrent limiting, the regen current limit, pot fault detection, ramp down at power off, reversing at zero demand speed and automatic reverse speed reduction.

Please download and review the detail sheets and manuals for further information. For information on the interface you will need to control this ESC, click here.

Output
Current

55A Amps VTX-40
110 Amps VTX-75
Size 6.02 x 3.07 x 1.57" All VTX models
Weight 9.17oz (0.573 lb) All VTX models

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UNI-Series Controllers for Electric Scooters, Robots, and Electric Cars

Uni series are Universal - Unidirectional - Unique controllers of unimpeachable reliability suitable for all the usual applications as well as some unusual ones! This controller is non-reversible.

Two current ratings are available, the Uni-8 with a current limit of over 100 amps and the Uni-4 with current limit of over 50 amps.

As standard, it includes regenerative braking. Versions are available for 12v, 24v, and 36v.

It is available as a plain board or as a boxed, prewired unit.

The Uni is technically advanced and packed with useful features without the 'high tech overkill'. The controllers have been extensively 'value engineered' to give the best possible ratio of performance to cost. Of special interest is the automatic ramp down and power off so the controller always stops smoothly and safely even if the ignition is turned off at full speed. Also if interest are the independent, linear, adjustable acceleration and deceleration ramps, the thermally sensitive overcurrent limiting, the regen current limit, pot fault detection and the auto switch-off.

For information on the interface you will need to control this ESC, click here. NOTE: The SMR and DMR interfaces do NOT work with this controller.

Output
Current

115 Amps - Uni 8
58 Amps - Uni 4
Size 2.8 x 2.8 x 1.38" plus tags
Weight 3.89oz (7.4oz with box kit)