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EZ VFD® Variable Frequency AC Drive

New! Easy to Use Variable Frequency Drive


The EZ VFD® variable frequency drive from Dart Controls is the easiest to use VFD on the market today.  Yet, it offers all the features you need to control your 3-phase AC motor, including:  Soft Start, Boost, Forward-Reverse, Brake, and much more.  Universal input voltage from 110-240VAC, 50-70Hz.  Multi-level Current Limit (MCL)™ circuit provides industry-best drive protection.  Available in both open chassis and NEMA 4X enclosed, the EZ VFD® variable frequency drive eliminates the complexity of controlling the speed of your 3-phase AC motor.

  • Power Factor Correction (PFC) energy saving circuit
  • Chassis and hard to find NEMA 4X versions
  • Optional Run Relay output
  • Power and Diagnostic LED's
  • Tamper Proof optional Removable Trimpot Board
  • Multi-Level Current Limit (MCL)™
  • Chemical and UV Resistant NEMA 4X
153D-200E-PB Digital Potentiometer DC Motor Speed Control with Scalable Display Dart Controls 153D-200C Open Chassis DC Motor Speed Control Replaces KBIC / KBMM Dart Controls Modbus Serial Interface Option for 153D Series DC Motor Speed Controls 153D-25E / 153D-200E NEMA 4X Enclosed SCR DC Motor Speed Control Dart Controls 153D Series HSK Auxiliary Heat Sink Doubles HP Rating Dart Controls 5K Ohm Speed Pot Kit SA-STOK-WO Discover More >

153D Digital Pot Control - Features and Benefits

153D Digital Pot Control - Features and Benefits

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

150 Series OEM DC Motor Speed Control

New! The NEW Enclosed Digital Pot 150 Series is Available Now**

153D-200E-PB Digital Potentiometer DC Motor Speed Control with Scalable Display Dart Controls 153D-200C Open Chassis DC Motor Speed Control Replaces KBIC / KBMM Dart Controls Modbus Serial Interface Option for 153D Series DC Motor Speed Controls 153D-25E / 153D-200E NEMA 4X Enclosed SCR DC Motor Speed Control Dart Controls 153D Series HSK Auxiliary Heat Sink Doubles HP Rating Dart Controls 5K Ohm Speed Pot Kit SA-STOK-WO Discover More >

153D Digital Pot Control - Features and Benefits

153D Digital Pot Control - Features and Benefits

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

  • Single or Dual Voltage 120/240 VAC, 50/60Hz
  • Adjustable horsepower settings
  • Male spade terminations standard
  • Full wave bridge supply
  • 1% speed regulation, ±1/2% with tach feedback
  • Adjustable Minimum speed
  • Adjustable Maximum speed
  • Adjustable IR Compensation
  • Adjustable Current Limit
  • Adjustable Acceleration
  • Adjustable Deceleration
  • Line voltage compensation
  • 5K ohm speed pot, knob & dial plate included
  • 50:1 speed range
  • Overload capacity: 200% for one minute
  • Transient voltage protection
  • Voltage following mode
  • Inhibit circuit
Dart Controls 125DV-C and 125DV-C-K 1 HP DC Motor Speed Control Dart Controls 29 Series 4PDT No-Pass DC Motor Reversing Switch Dart Controls 55H2 56H2 Series Isolated Signal Follower for 253G Series Dart Controls 153D Series HSK Auxiliary Heat Sink Doubles HP Rating Dart Controls -5 option 4-20mA Follower Option for 125D, 253G and 530B Series Controls Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

125D 1HP DC Speed Control

Dart Controls 125DV-C and 125DV-C-K 1 HP DC Motor Speed Control Dart Controls 29 Series 4PDT No-Pass DC Motor Reversing Switch Dart Controls 55H2 56H2 Series Isolated Signal Follower for 253G Series Dart Controls 153D Series HSK Auxiliary Heat Sink Doubles HP Rating Dart Controls -5 option 4-20mA Follower Option for 125D, 253G and 530B Series Controls Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

  • Dual Voltage 120/240 VAC, 50/60Hz
  • Adjustable horsepower settings
  • Barrier terminal strip
  • Full wave bridge supply
  • 1% speed regulation, ±1/2% with tach feedback
  • Adjustable Minimum speed
  • Adjustable Maximum speed
  • Adjustable IR Compensation
  • Adjustable Current Limit
  • Fixed Acceleration
  • Optional Adjustable Acceleration
  • Line voltage compensation
  • 5K ohm speed pot, knob & dial plate included
  • 50:1 speed range
  • Overload capacity: 200% for one minute
  • Transient voltage protection
  • Voltage following mode
  • Inhibit circuit
Dart Controls 125DV200EB DC Motor Speed Control NEMA 4X 90V 1HP / 180V 2HP Black Dart Controls 125DV200EW DC Motor Speed Control NEMA 4X 90V 1HP / 180V 2HP White Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

125DV200E 2HP NEMA 4X Enclosed

Dart Controls 125DV200EB DC Motor Speed Control NEMA 4X 90V 1HP / 180V 2HP Black Dart Controls 125DV200EW DC Motor Speed Control NEMA 4X 90V 1HP / 180V 2HP White Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

  • UL Listed, all models
  • MOV transient protection
  • Adjustable linear ACCEL and DECEL adjustment
  • Adjustable minimum and maximum speed limits
  • Adjustable Current Limit and IR Compensation
  • Line fused
  • Power ON/OFF switch
  • Power "ON" indicator
  • NEMA 4X enclosure
  • Auto Sensing Dual Voltage 120/240VAC input
  • Output Voltage 0-90/180Vdc
  • 1% speed regulation; 50:1 range
  • HP adjustable over 1/4 to 2HP range – no jumpers or resistors to change
  • Overload capacity 200% for 1 minute
Dart Controls 253G-200E-29 DC Motor Speed Control Reversing Dart Controls 253G-200C DC Speed Motor Control Dart Controls 29 Series 4PDT No-Pass DC Motor Reversing Switch Dart Controls 55H2 56H2 Series Isolated Signal Follower for 253G Series Dart Controls 5K Ohm Speed Pot Kit SA-STOK-WO Dart Controls -5 option 4-20mA Follower Option for 125D, 253G and 530B Series Controls DC Motor Controls / DC Drive 253G-200E NEMA 4 DC Motor Speed Control for Motors 1/8 to 2 HP Discover More >

Understand AC Supply and Motor Connection

Understand AC Supply and Motor Connection

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

253G 2HP NEMA DC Speed Control

Dart Controls 253G-200E-29 DC Motor Speed Control Reversing Dart Controls 253G-200C DC Speed Motor Control Dart Controls 29 Series 4PDT No-Pass DC Motor Reversing Switch Dart Controls 55H2 56H2 Series Isolated Signal Follower for 253G Series Dart Controls 5K Ohm Speed Pot Kit SA-STOK-WO Dart Controls -5 option 4-20mA Follower Option for 125D, 253G and 530B Series Controls DC Motor Controls / DC Drive 253G-200E NEMA 4 DC Motor Speed Control for Motors 1/8 to 2 HP Discover More >

Understand AC Supply and Motor Connection

Understand AC Supply and Motor Connection

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

  • Dual voltage - 120/240 VAC, 50/60Hz
  • Adjustable horsepower settings
  • Barrier terminal strip
  • Packaged bridge supply (fullwave)
  • 1% speed regulation; ±1/2% with tach feedback
  • Adjustable Minimum speed
  • Adjustable Maximum speed
  • Adjustable IR Compensation
  • Adjustable Linear Acceleration
  • Adjustable Current Limit
  • Line voltage compensation
  • 5K ohm speed pot, knob and dial included
  • Power on/off switch (enclosed models)
  • 50:1 speed range
  • Overload capacity: 150% for one minute
  • Transient voltage protection
  • Inhibit circuit
  • Enclosed models rated NEMA 4/12
Dart Controls 15DV1A DC Motor Speed Control 'L' Orientation 90/180V Motors to 2A Dart Controls 15DV2A DC Motor Speed Control 'J' Orientation 90/180V Motors to 2A Dart Controls 15DVP NEMA 1 DC Speed Motor Control For 90/180V Motors up to 2A DC Dart Controls 15DVE NEMA 4 DC Motor Speed Control Up to 1/4HP 90V and 1/2HP 180V Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

15 Series FHP DC Speed Control

Dart Controls 15DV1A DC Motor Speed Control 'L' Orientation 90/180V Motors to 2A Dart Controls 15DV2A DC Motor Speed Control 'J' Orientation 90/180V Motors to 2A Dart Controls 15DVP NEMA 1 DC Speed Motor Control For 90/180V Motors up to 2A DC Dart Controls 15DVE NEMA 4 DC Motor Speed Control Up to 1/4HP 90V and 1/2HP 180V Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

  • Dual voltage models of 12/24 VAC or 120/240 VAC input
  • Full wave bridge power supply > Adjustable Minimum speed
  • Adjustable Minimum speed
  • Adjustable Maximum speed
  • Adjustable IR Compensation
  • Fixed Acceleration
  • 5K ohm speed pot, knob & dial included
  • 25:1 speed range
  • 1% speed regulation
  • Overload capacity of 200% for 1 minute
  • Transient voltage protection
  • AC line fuse (Enclosed)
  • Power on/off switch and light (Enclosed)
Dart Controls 130/132LC Series DC Reversing Motor Speed Control Dart Controls 130/132HC Series High Cycle DC Reversing Motor Speed Control Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

130 Reversing DC Speed Control

Dart Controls 130/132LC Series DC Reversing Motor Speed Control Dart Controls 130/132HC Series High Cycle DC Reversing Motor Speed Control Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

  • Adjustable horsepower settings
  • Barrier terminal blocks
  • Full wave bridge supply
  • Adjustable Min speed
  • Adjustable Max speed
  • Adjustable IR compensation
  • Adjustable current limit
  • Fixed accel (0.5 sec)
  • Line voltage compensation
  • 5K speed pot, dial and knob included
  • 50:1 speed range
  • Overload capacity: 200% for 1 min
  • Transient voltage protection
  • Onboard dynamic brake resistor
  • Automatic DB on power loss
  • 1% speed regulation
Dart Controls 530BRE (L) and 530BRC (R) Series DC Motor Speed Control Dart Controls -36M/-38M Reversing Option for 530B Series DC Motor Speed Controls Dart Controls 5K Ohm Speed Pot Kit SA-STOK-WO Dart Controls -5 option 4-20mA Follower Option for 125D, 253G and 530B Series Controls 533BC 3HP DC Motor Controller 3HP DC Motor Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

530B 3HP DC Speed Control

Dart Controls 530BRE (L) and 530BRC (R) Series DC Motor Speed Control Dart Controls -36M/-38M Reversing Option for 530B Series DC Motor Speed Controls Dart Controls 5K Ohm Speed Pot Kit SA-STOK-WO Dart Controls -5 option 4-20mA Follower Option for 125D, 253G and 530B Series Controls 533BC 3HP DC Motor Controller 3HP DC Motor Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

  • Dual 120/240 VAC, 50/60Hz via slide selector switch
  • Adjustable horsepower settings
  • Barrier terminal strip
  • Packaged bridge supply (fullwave)
  • 1% speed regulation; ±1/2% with tach feedback
  • Adjustable Minimum speed
  • Adjustable Maximum speed
  • Adjustable IR Compensation
  • Adjustable Linear Acceleration (0.3 to 12 sec.)
  • Adjustable Linear Deceleration (0.6 to 12 sec.)
  • Adjustable Current Limit
  • Line voltage compensation
  • 5K ohm speed pot, dial and knob included
  • 50:1 speed range
  • Overload capacity: 200% for one minute
  • Transient voltage protection
  • Inhibit circuit
  • Enclosed models rated NEMA 4/12
MD10P (C) / MD3P (R) / MD3E (L) Series DC Digital Drives DC Motor Drive Dart Controls MD10P Digital DC Motor Speed Control Dart Controls PU-E Series Indoor Duty Hall Effect Incremental Encoder Speed Sensor encoder for DC motor hall effect encoder Discover More >

Introduction to Digital Drives

Introduction to Digital Drives

MD10 / MD3 Digital DC Drive

MD10P (C) / MD3P (R) / MD3E (L) Series DC Digital Drives DC Motor Drive Dart Controls MD10P Digital DC Motor Speed Control Dart Controls PU-E Series Indoor Duty Hall Effect Incremental Encoder Speed Sensor encoder for DC motor hall effect encoder Discover More >

Introduction to Digital Drives

Introduction to Digital Drives

  • Adjustable min/max
  • Adjustable accel/decel
  • Closed-Loop digital speed regulation
  • Programmable power-up drive settings
  • Drive Inhibit mode
  • Jog function
  • Non-volatile memory preserves settings
  • Factory default restore function
  • User-default restore function
  • Front-panel parameter lockout
  • Programmable display in any rate or time units
  • Custom front panel artwork available
  • NEMA 4X rating both panel mount and stand alone enclosed models
  • Universal power supply - any input 85–265 VAC
  • Two (2) user-defined alarm contact outputs
  • Multiple operational modes: Rate, Time, Follower
Dart Controls MD40P (C) / MD50P (L) / MD50E (R) Digital DC Speed Controls Dart Controls OPT420 mA Follower Option for Digital DC Motor Speed Controls Discover More >

Introduction to Digital Drives

Introduction to Digital Drives

MD40 / MD50 Digital DC Drive

Dart Controls MD40P (C) / MD50P (L) / MD50E (R) Digital DC Speed Controls Dart Controls OPT420 mA Follower Option for Digital DC Motor Speed Controls Discover More >

Introduction to Digital Drives

Introduction to Digital Drives

  • 1/50 to 2.0 adjustable HP range
  • Universal power supply supports 85-265 VAC in
  • 1/8 or 1/4 DIN panel mount with NEMA 4X faceplate, NEMA 4X stand-alone enclosure
  • Front panel field-programming (with lock-out jumper)
  • Display speed in any engineering unit of measure
  • Two alarm relay outputs (form C, 5 Amp @ 250 VAC)
  • Large 1/2˝ LED display
  • Master/Follower modes
  • Displays set point or actual running speed
  • Adjustable PID settings
  • Optional your company name/ logo on the cover
Dart Controls ASP10 Smart (Closed-Loop) Digital Potentiometer - Master Follower Control Discover More >

Quick Start

Quick Start

Advanced Features

Advanced Features

ASP10 Digital Potentiometer

Dart Controls ASP10 Smart (Closed-Loop) Digital Potentiometer - Master Follower Control Discover More >

Quick Start

Quick Start

Advanced Features

Advanced Features

  • Sync two or more motor speeds
  • Programmable accel/decel rates
  • Programmable P-I parameters
  • Pulse feedback required - up to 50K/min
  • Configurable power-up modes
  • Inhibit mode
  • Jog mode
  • User-friendly menu driven programming from front panel
  • Parameter lockout to save settings
  • Programmable display units and decimal point
  • Custom display bezel artwork available
  • NEMA 4X Rating (with supplied gasket)
  • Dual Supply 120/240VAC
  • User configured output for status and diagnostics
  • Non-volatile memory
  • Factory default restore
  • User-default restore
Dart Controls ASP40 Smart (Closed-Loop) Digital Potentiometer - Master Follower Control Dart Controls OPT420 mA Follower Option for Digital DC Motor Speed Controls Discover More >

Quick Start

Quick Start

Advanced Features

Advanced Features

ASP40 Digital Potentiometer

Dart Controls ASP40 Smart (Closed-Loop) Digital Potentiometer - Master Follower Control Dart Controls OPT420 mA Follower Option for Digital DC Motor Speed Controls Discover More >

Quick Start

Quick Start

Advanced Features

Advanced Features

  • Sync two or more motor speeds
  • Interfaces with any drives (AC/DC) that accepts 3-wire speed pot input
  • Ideal for PLC/SCADA controlled systems
  • Digital closed-loop P-I-D algorithm delivers accuracy of ± 1/2 pulse (feedback)
  • Optional open-loop operation available
  • Non-volatile memory maintains user configuration
  • Field programmable
  • Speed profile parameters include MIN, MAX, ACCEL, DECEL
  • Programming lockout feature
  • Universal power supply accepts any line voltage inputs from 85-250VAC @ 50-60Hz
  • Transient voltage protection
  • Compatible with many speed sensors
  • Two programmable alarm/status outputs
  • Configurable user inputs support Inhibit, Emergency-Stop, and Jog functionality
  • Large 4 digit, 1/2” LED display configurable in rate or time units, including decimal point
  • Multiple operating modes including Master and Follower
  • NEMA 4X when used with gasket (provided)

BLM700 Brushless DC Drive /Tachometer


  • Microprocessor-based design
  • Digital closed-loop algorithm accuracy of ±1/2 RPM of set speed or equivalent
  • Non-volatile memory maintains drive settings on power loss
  • Factory or field programmable via front-panel keypad
  • Control profile settings include MIN and MAX speed, ACCEL, DECEL, display units, and more
  • Programming lockout feature
  • Transient voltage protection
  • Self-contained power supply for speed pickups
  • Large 4 digit, 1/2” LED display
  • Durable NEMA 4X rated aluminum housing with Polycarbonate membrane and gasket
  • Ambient temperature range of -10°C to 45°C
  • Multiple operating modes including: Master, Rate Mode – Controls in rate unit such as RPM, Gallons per Minute, etc. Master, Time Mode –Controls in time unit such as HH:MM, MM:SS, SS:TT, or other unit
  • 60 or 120 Hall Sensor spacing - jumper selectable
  • Forward or Reverse rotation of motor is jumper selectable
Dart Controls 65E10E / 65E20E Low Voltage PWM NEMA 4X DC Speed Control 12-48V 12 volt dc variable speed motor controller 12 volt motor speed control Dart Controls 65E10C / 65E20C Low Voltage PWM DC Motor Speed Control 12-48V 12-48VDC supply/output, NEMA 4X enclosed PWM DC motor speed control rated 15A continuous Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

65E Low Voltage PWM DC Motor Control (20A)

Dart Controls 65E10E / 65E20E Low Voltage PWM NEMA 4X DC Speed Control 12-48V 12 volt dc variable speed motor controller 12 volt motor speed control Dart Controls 65E10C / 65E20C Low Voltage PWM DC Motor Speed Control 12-48V 12-48VDC supply/output, NEMA 4X enclosed PWM DC motor speed control rated 15A continuous Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

Compact PWM motor speed control for low voltage applications
Rated for 10 or 20 amps continuous current, the 65E10/65E20 Series are compact PWM controls for 12 thru 48 volt DC (jumper selectable) battery powered applications. Features include adjustable maximum speed, minimum speed, current limit, I.R. compensation, and acceleration, plus a quiet operating frequency of 18kHz. NEW FEATURES include current limit shutdown and drive status LED’s.

  • Smooth, quiet 18kHz switching
  • NEMA 4X enclosed models
  • Saves battery charge for longer operation / life
  • High efficiency MOSFET's reduce voltage drop
  • Speed regulation is ±1% of base speed
  • Adjustable MAX and MIN speed; IR COMP; CUR LIM; ACCEL
  • Accepts 0-10Vdc speed signals
  • Inhibit input for low power start/stop switching
  • Current limit shutdown and output
  • Supply voltage and Current Limit status LED's
Dart Controls 65E40 (R) / 65E60 (L) Low Voltage PWM DC Speed Control 12-36V Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

65E Low Voltage PWM DC Motor Control (60A)

Dart Controls 65E40 (R) / 65E60 (L) Low Voltage PWM DC Speed Control 12-36V Discover More >

Trimpot Definition and Adjustment

Trimpot Definition and Adjustment

PWM motor speed control for low voltage applications rated to 2000W
65E Series standard features include: Adjustable MIN, MAX, ACCEL, IR COMP, and CUR LIM, low battery compensation, analog armature feedback, speed potentiometer with leads, knob and dial plate. Available for 12 thru 36DVC, 40 and 60 Amp continuous motor ratings.

  • Saves battery charge for longer operation / life
  • High efficiency MOSFET's reduce voltage drop
  • Speed regulation is ±1% of base speed
  • Adjustable MAX and MIN speed; IR COMP; CUR LIM; ACCEL
  • Accepts 0-10Vdc speed signals
  • Inhibit input for low power start/stop switching
  • Current limit

55AC Triac AC Motor Speed Control


  • Controls most single phase AC motors and resistive loads, not designed for capacitor start motors
  • For vibratory feeder, fan, pump, heating, and lighting industries. All models feature single-phase AC input and fully variable AC output
  • Enclosed version includes power on/off switch, power on indicator lamp and front access fuse
  • Triac switching to vary output phase and thus speed of (compatible)

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