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Cambridgeshire, CB25 0AH
"We're in Control"
See us via the Internet:
4QD try to write a manual which is readable. If we
succeed and you don't read it there is not a lot more
we can do. However if you try to read it and don't
understand it (or even don't like our style) - then we
have failed so please tell us. Only by means of your
criticisms and suggestions can we improve our
publications! To help you, we have marked the more
technical sections ¶ so that you may ignore them.
If you have any problems or queries, 4QD pride
ourselves on our level of technical advice and if we
put as much information into this manual as we could
many would find it too long.
If you require more information, 4QD have a very
full WWW site which has a large section giving
answers to commonly asked technical questions.
Even if you do not have easy Internet access, you will
find this well worth reading, so ask a friend who is
connected or go to your local Internet Cafe or public
library.
4QD's VTX range of economy 4 quadrant controllers
have been engineered to replace the NCC series. As
well as improved circuitry, they benefit from surface
Office
30 Reach Road
Burwell
Fax: 01638 744 080
http://www.4QD.co.uk
Instruction Manual
VTX series controllers
VTX-40 and VTX-75
Foreword
Date printed: 13th May 2014
Stores
Unit 6A
Heath Road Industrial Estate
Burwell
Cambridgeshire, CB25 0AP
Email to: esupport@4QD.co.uk
mount technology, which offers superior reliability
and is better suited to higher volume production.
The VTX controllers are very suitable for general
purpose speed control applications where reversing is
required. Amongst other applications our controllers
have been successfully used in the following:
Camera dollies
Caravan shifters
Carnival floats
Conveyors
Factory stores vehicles
Floor cleaning machines
Golf buggies
Invalid scooters
Kiddie cars
Miniature railways, 3", 5" and 7¼ gauge
Mobile targets
Mountain rescue vehicles
Remote controlled vehicles
Ride on golf buggies
In fact wherever battery motor speed control - and
good value - is required.
"We're in Control"
Winches

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Summary of Contents for 4qd VTX Series

  • Page 1 VTX series controllers VTX-40 and VTX-75 Foreword 4QD try to write a manual which is readable. If we mount technology, which offers superior reliability succeed and you don’t read it there is not a lot more and is better suited to higher volume production.
  • Page 3 Dual Ramp reversing can be deactivated, when the failure. reversing becomes pre-select. To disengage dual ramp, alter the header shown in the diagram opposite. It is important for the last word here be that the constructor should fit a means of quickly VTX series instructions Page 3...
  • Page 5 Parking brake 1 amp max. 7: Mounting The VTX series are designed for mounting via the Mounting holes in the heatsink are tapped M4. Do heatsink as in the diagram below. In most not drill these out larger. It is unnecessary and you...
  • Page 7 One end of the coil connects to battery -ve and the other to pin B of the input 4QD can supply these pre- connector which is also connected to the ignition crimped - they require a special switch.
  • Page 9 ‘dead man’ control as the pot If the switch changed is the reverse, it will then won’t return to zero when it is released. 4QD can accelerate up to speed in the other direction. This supply a spring return to zero hand control.
  • Page 11 DEC than for ACC. If the Decel Ramps time is set too low (anticlockwise) then the relays The VTX series controllers incorporate linear ramps will drop out (and short out the motor) before to control the maximum acceleration and deceleration regenerative braking has finished, giving a jerk rates.
  • Page 13 To use them with the make certain that no other point of the control system VTX series a modification must be made so the field can be earthed to chassis. If in doubt contact 4QD.
  • Page 15 - a single strand from 7/0.2 cable is fine, but no thicker! Special pads have been placed for this purpose. Or use FSR-090 (see 4QD www site). There are also similar fuse tracks to pins A (F2) & F (F3) of the 6 pin input connector (far right drawing).

This manual is also suitable for:

Vtx-40Vtx-75