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Controllers
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- Pro-160 / 360 Temperature Sensors
- Pro-160 / 360 to Hall Throttle Wiring
- JSK-120 Driving Two Pro-360s
- RBT and Pro-160 / 360 P3 Pot Fault
- Pro-160 / 360 Dual Control
- Pro-100 / 160 / 360 Radio Control Failsafe
- Pro-100 / 160 / 360 to JSK-100 wiring
- Pro-100 / 160 / 360 Failsafe Contactor
- Double Heading the Pro-100 / 160 / 360
- Pro-160 Layout Diagrams
- Pro-100 / 160 / 360 Software Versions
- Pro-160 / 360 Fault Codes
- Use with shunt wound motors
- Use with Series Wound Motors
- Double Heading Pro-160 / 360 & 4QD Series
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- Pro-160 / 360 Temperature Sensors
- Pro-360 Heatsink Removal and Replacement
- Pro-160 / 360 to Hall Throttle Wiring
- JSK-120 Driving Two Pro-360s
- RBT and Pro-160 / 360 P3 Pot Fault
- Pro-160 / 360 Dual Control
- Pro-100 / 160 / 360 Radio Control Failsafe
- Pro-100 / 160 / 360 to JSK-100 wiring
- Pro-100 / 160 / 360 Failsafe Contactor
- Double Heading the Pro-100 / 160 / 360
- Pro-100 / 160 / 360 Software Versions
- Pro-160 / 360 Fault Codes
- Use with shunt wound motors
- Use with Series Wound Motors
- Double Heading Pro-160 / 360 & 4QD Series
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- Double Heading for the Pro-150 and 4QD Series
- Pro-150 Hall Throttle Supply
- Pro-150 Hall Throttle Programming
- Pro-150 Push Button Use
- Use with shunt wound motors
- Pro-150 Fault Finding Guide
- Pro-150 Pt Fault Code
- Pro-150 programmable parameters
- Pro-150 Mechanical Information
- Pro-150 Basic Wiring Diagram
- Fraser Golf Buggies, Wiring for Pro-150
- DMR-203: Use with PRO-150 Controllers
- Pro-150 Capacitor Modification
- PRO-150 Current Limit
- PRO-150 Issue History
- PRO-150 Joystick Programming
- Show Remaining Articles ( 1 ) Collapse Articles
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- Mosfet Insulator Arrangement DNO & Porter
- How To Wire Up a Porter 5
- Closed Loop Current Control
- Fitting a Porter to a PDQ Power trike
- Driving the Porter by Raspberry Pi
- Porter: Disabling Regenerative Braking
- Porter Current Limit Adjustment
- DMR-203 Radio Control of a Porter 5 / 10
- Porter 40 Speed Controller
- Porter 40: Use with PWM Input
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- Double Heading for the Pro-150 and 4QD Series
- 4QD-200/300 Overview
- Control Board Jumper Positions
- Ampflow motor
- Damage From Blown Mosfets
- DMR-203: Use with 4QD Series Controllers
- Battery Contactor for 4QD-200 / 300
- Adjustment for 48V
- Inhibit switch / footbrake - 4QD series only [tour 16]
- Forward / Off / Reverse Mode (4QD Series)
- Converting Parking Brake to Brake Light
- Disabling HPLO on Early 4QD Models
- Inhibit Ramp Modification [4QD series]
- Over voltage protection in the 4QD series
- Deadband values and removal
- How to dismantle the 4QD series
- Fault finding on the 4QD series
- Testing the 4QD Base Board and MOSFETs
- Reverse Acceptance Threshold [RAT] Modification
- Current limit resistors
- Use with Tacho Feedback Board
- Control Board Modification [Pre June 2010]
- Reverse Speed Modification [pre issue 17]
- Reversing Latch Modification [pre issue 16]
- Damage from a Reversed Battery (4QD Series)
- Mixing 4QD 150 / 200 / 300 series boards
- 4QD version history
- Inhibit
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- Damage from Reversed Batteries (NCC/VTX)
- Waveforms and Fault Finding
- Ramp Timings (NCC)
- Internal Power Supply and Protection Circuitry
- Fitting Expansion Connector
- NCC Speed Controller
- VTX and NCC Operating Voltages
- NCC Circuit Description
- VTX / NCC Fault Finding
- NCC Mark 2 Issue Number History
- NCC Mark 1 Issue Number History
- NCC Key Components
- NCC Zener Diode Failure
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- Internal Power Supply and Protection Circuitry
- Current Limiting in the Pro-120 [and others]
- Pro-120 Mk1 History
- Pro-120 Mk2 History
- Pro-120 Key Components
- Earth Fuses: Why Do They Blow?
- Modifying the Pro-120 for other voltages
- Pro-120 Fault Finding Tips
- PRO-120: Multiple Slaves
- PRO-120 Ramp Reduction
- Fitting Expansion Connector
- Pro-120 Modification to give Uni-Directional Control
- Pro-120 Robot Wars Version
- Pro-120 Ignition Options
- Battery Discharge Protection: PRO-120
- Pro 120 Mark 1 Speed Controller
- PRO 120 Mark 1 - Additional Diagrams
- Show Remaining Articles ( 2 ) Collapse Articles
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- Pro-160 / 360 to Hall Throttle Wiring
- RBT and Pro-160 / 360 P3 Pot Fault
- Pro-160 / 360 Dual Control
- Pro-100 / 160 / 360 Radio Control Failsafe
- Pro-100 / 160 / 360 to JSK-100 wiring
- Pro-100 / 160 / 360 Failsafe Contactor
- Double Heading the Pro-100 / 160 / 360
- Pro-100 / 160 / 360 Software Versions
- Use with shunt wound motors
- Use with Series Wound Motors
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Accessories
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Application Notes
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Technical
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- Speed to RPM Calculator
- Noise Suppression for Multiple Motors
- Improving Heat Dissipation
- A Basic Installation
- Motor Noise Suppression
- Catching diodes
- Multi speed control
- Parking Brake Voltage
- Fuses and Circuit Breakers
- Radio Control Wiring Hints
- Typical Wiring for the PRO, DNO, VTX and NCC Controllers
- Wiring for Hand Control and Radio Control
- Wiring for Push Button Use
- Good Wiring Practise
- Motors in Parallel
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- Current limit
- PCB numbers
- Acceleration and Deceleration Ramps
- Thermal shutdown
- Ignition
- Power down state
- Ramps
- Reversing
- Forward / off / reverse mode or push-button operation
- Overvoltage protection
- Battery Discharge Protection
- Joystick [aka wig-wag]
- Parking brake driver
- Pot Fault Detection
- High Pot Lockout HPLO
- Reverse polarity protection [tour 26]
- Main Capacitor
- Radio control interface
- Tacho Generator Feedback
- Voltage Following
- What Does a Motor Speed Controller Do?
- Ignition Circuit
- Show Remaining Articles ( 7 ) Collapse Articles
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- Using a BMS with a Motor Controller
- Mosfet Alternatives
- Testing an Electric Motor
- What is EMC [Electromagnetic Compatibility]?
- Closed Loop Current Control
- Battery current and motor current
- MOSFETs
- Half bridge
- Switching frequency
- Regenerative braking
- Batteries
- Customised Arc Potentiometers
- What is PWM Motor Control
- Full Bridge
- Towing
- Torque
- Surge Currents
- Speed Stability
- Quadrants
- Heat
- Thermal shutdown
- Heatsinks
- Choosing a Controller
- Earth Track Fuse and Earth Loops
- Tacho Set-Up
- Charging a 24V Battery From a 12V Source
- What Voltage Should I Use? [12, 24, 36, or 48V]
- Positional Servo Control [DNO / VTX]
- POT Dead Band
- Why Do Mosfets Fail?
- Back EMF & Internal Resistance
- Use of Generators with Speed Controllers
- Control by Microprocessor
- Foot Pedal Idea
- Show Remaining Articles ( 19 ) Collapse Articles
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< Knowledgebase
Print
Ampflow motor
Posted
Updated
We recently encountered a strange issue with a 4QD-300 driving an Ampflow A28-400-F24 motor.
Forward operation worked as expected but in reverse a very slight pulsing or oscillation of the motor speed could be detected at throttle openings between 10% and 20% with no load.
This problem only appeared when half speed reverse was enabled, it could be cured by removing the half speed reverse link.