What is a Variable Frequency Drive?
A variable frequency drive is an electronic device that allows you to start, stop, and control the speed of a three phase motor. It is also a motor starter as it is equipped with overload protection. Read more »
What is the difference between a 'new surplus' motor and a 'factory new' motor?
Our New Surplus electric motors and drives are new and unused overstock or discontinued items offered at lower prices and come with our 90-day warranty.

Factory New products are competitively priced and come with a manufacturers warranty.
Variable frequency drives (VFDs or inverters) now play an important part in major industry.
Within the last 10 years they have been perfected to control and vary the speed of 3 phase electric motors. They serve many purposes, besides speed control. Homeowners and hobbyist alike, who have lathes or milling machines with a 3 phase motor, usually don't have 3 phase power to operate. These VFDs (instead of using a rotary phase converter) can now be used to convert single phase power to 3 phase power. Read more »
A510-2008-C3-Dealers Electric-Teco
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7.5 HP, 230 Volts, NEMA 1, Teco, A510-2008-C3-U

Model #: A510-2008-C3-U  
230 Volts 3 Phase Input, 230 Volts 3 Phase Output
Stock:  7
HP : 7.5
Enclosure : NEMA 1
Input Voltage : 230
Input Phase : 3
Manufacturer : Teco-Westinghouse
Output Voltage : 230
Output Phase : 3
Model : A510
Item Condition : Factory New
Weight:  15 lbs
Our Price:
Quantity 6 - 11 12 - 23 24+
 Price $627.00

Teco-Westinghouse A510 Heavy Duty Drive

A versatile AC Drive that can control todays demanding motor driven applications, this highly flexible drive has multiple control modes. The A510 Heavy Duty AC Drive is an easily configured versatile drive product that will controll all general applications such as fans, pumps, conveyors, and mixers. It comes standard with a simple to select preset application parameters for many commonly used applications.

Despite its simple and easy approach, the A510 is loaded with features to solve tough and demanding applications such as reciprocating pumps, compressors and high torque/ high inertia loads.

Replacement for the MA7200 Series Constant Torque Application


  • Input Voltage: 230 Volt 3 Phase
  • Output Voltage: 230 Volt 3 Phase
  • Constant Torque Horsepower: 7.5
  • Constant Torque Amps: 25
  • Variable Torque Horsepower: 10
  • Variable Torque Amps: 30
  • Enclosure: NEMA 1
  • Additional Features: Includes built-in braking transistor.
  • Height: 12.40"
  • Width: 5.51"
  • Depth: 6.97"
  • Warranty: Factory New with Manufactures Warranty


The A510 is loaded with features to solve these demanding applications and control more common ones such as fans, pumps, conveyors, and mixers. Demanding application examples are listed below.

  • Compressors
    • High starting torque with sensorless vector mode
    • Stable torque at low speed
  • Metals processing including industrial saws, punch press, and screw and bolt manufacturing
    • Attains the high torques required by these applications
    • Hardware design handles the high in-rush currents that are produced
    • High braking torque and regenerative overvoltage protection
  • Machine tool operations such as grinding, milling and lathes
    • Capable of output frequencies to 1200 Hz
    • Smooth operation and minimal ripple at any speed
    • High braking torque capabilities
    • High resolution analog input for demanding precision
  • Plastics and rubber process machines such as extruders and rubber compounding
    • Smooth operation at low speeds
    • High starting torque to produce consistent product
    • Hardware design handles the high in-rush currents that are produced
  • Cranes, hoists, and materials handling
    • Four quadrant operation for motoring and regenerative situations
    • High torque for instant lifting
    • High braking torque, precise control and operation
    • Easily incorporates mechanical and safety interlocks

Features & Highlights

  • Selectable Control Modes designed to cover almost all motor driven applications
    • V/F Mode with constant and variable torque settings
    • V/F Mode with PG encoder feedback to improve speed regulation
    • Sensorless Vector for more dynamic applications
    • Closed Loop Vector for the most demanding applications involving both speed and torque control
      • 1000:1 Speed control range
      • 5% Torque regulation
    • Closed Loop Vector with Permanent Magnet Motors for servo-type control
  • Attains high levels of torque
    • 200% Starting torque in sensorless vector mode
    • 200% Holding torque in closed-loop vector mode
  • Select matching application type for quick setting of parameter defaults
  • Advanced regenerative energy handling capabilities with overvoltage suppression
    • Reduce the need for costly braking resistor units
  • Extensive Monitoring and Display capabilities
    • Display over 40 different operating and status information variables including
      • Input and output frequencies
      • Output current and voltage
      • Analog and digital I/O status
      • PID related data
      • Vector PID loop control information
      • Motor operating data
    • Retains 4 most recent faults in a log
      • Operating information at instant of occurrence of most recent fault
  • PLC functionality built-in to enhance application flexibility
  • Advanced tuning/ motor matching capabilities
    • Control induction or permanent magnet motors
    • 5th generation tuning algorithms for optimized vector control and motor coordination
      • Dynamic tuning
      • Static tuning
  • Pulse Width Modulation (PWM) technology that reduces motor noise
  • 32 Bit, 100 MHz processor for extremely fast response
  • Digital I/O
    • 8 configurable digital inputs
      • 24V power on board
      • Over 40 available selections per input
      • Assign each input as a normally open or closed input
      • Fast update time
      • 3 digital outputs
        • 1 form C relay and 1 form A relay (3 hp @ 230V, 5 hp @ 460V and higher)
        • 1 photocoupler output (Quantity 2 at 1-2 hp @ 230V, 1-3 hp @ 460V)
        • All digital outputs are assignable as normally open or normally closed contacts
      • Safety input contact for user’s interlock circuit
  • Analog I/O
    • Qty 2 Analog inputs
      • One channel selectable as 0-10V or -10-0-10V
      • One channel selectable as 0-10V or 4-20ma
      • Assignable as speed reference, PID feedback, gains, bias, and torque control-related parameters
    • Qty 2 0-10V analog outputs
      • Over 25 assignable selections for each channel
      • Assignable gain and bias on each channel
  • Pulse I/O
    • 1 pulse input channel capable of up to 32 kHz
    • 1 pulse output channel capable of up to 32 kHz
      • Can sync channels between A510 units for primary/ secondary configuration
Operation Mode LCD keypad with parameter copy function
Control mode V/F, V/F+PG, SLV, SV, PMSV with space vector PWM mode
Frequency control range 0.1Hz ~ 400.0Hz (1200.0Hz with special parameter setting)
Frequency accuracy
(Temperature change)
Digital references: ±0.01% (-10~+40ºC),
Analog references: ±0.1% (25ºC ±10ºC)
Speed control accuracy ±0.1% (closed loop vector control), ±0.5% (sensorless vector mode)
Frequency setting resolution Digital references: 0.01Hz,
Analog references: 0.06Hz/60Hz
Output frequency resolution 0.01Hz
Overload Tolerance rated output current 150%/1 min, 200%/2sec (C.T. mode), 120%/1 min (V.T. mode),factory setting of 150%/1 min, 200%/2 sec
Frequency setting signal 0 ~ +10VDC/4 ~ 20mA or -10VDC ~+10VDC and pulse–typefrequency command
Acceleration/deceleration time 0.0~6000.0 sec (separately set acceleration and deceleration times)
Voltage, frequency characteristics Can set custom V/ F-curve based on parameters
Braking torque Approx. 20%
Main control functions Auto tuning, shaft lock, torque control, position control, droop control, soft-switching in PWM, over-voltage protection, dynamic braking, speed search, frequency traversing, instantaneous power fault restart, PID control, automatic torque compensation, slip compensation, RS-485 communicaton MODBUS standard, speed feedback control, simple PLC functionality, 2 sets of analog output, safety switch interlock
Additional control functions Record of elapsed power-up and operation times, 4 most recent occurrences of faults and the most recent fault record, status, energy-saving function setting, single phasing protection, smart braking, DC braking, dwell, S-curve acceleration and deceleration, Up / Down operation, MODBUS communication type, scale pulse output, engineering unit display, Local/ remote switching keys, SINK/ SOURCE input interface options, stall protection Action: current can be set (in acceleration or constant speed state)
Protective Functions Stall protection Threshold current can be set (in acceleration or constant speed, it can be set separately. In deceleration, it can be set on or off )
Instantaneous Over Current (OC) and output Short Circuit (SC) protection Inverter shuts off when the current exceeds 200% of the inverter related current.
Inverter Overload protection (OL2) Inverter rated current is 150%/1 min., at 200%/2 sec, inverter stops (C.T. type), carrier frequency factory setting is 8~2 kHz. At 120%/1 min, inverter stops (V.T. type), carrier frequency factory setting is 2 kHz.
Motor Overload (OL1) protection Electrical overload protection curve
Over Voltage (OV) protection When the main circuit DC voltage exceeds 410V (230V units)/ 820V (460V units), the drive faults out regardless of whether it is in run mode or stopped.
Under Voltage (UV) When the main circuit DC voltage is under 190V (230V units)/ 380V (460V units), the drive faults out regardless of whether it is in run mode or stopped. The DC voltage trigger level can be adjusted.
Automatic restart after instantaneous power fault Power fault exceeds 15 ms. This is programmable to 2 seconds.
Overheat protection (OH) By direct temperature detection in the unit
Ground Fault protection (GF) Uses current feedback for protection
Protection in charge state When main circuit DC voltage exceeds 50V, the “CHARGE” LED is on.
Output Phase Loss Protection (OPL) Automatically stops motor rotation and faults
Location Indoor (protected from corrosive gases and dust)
Ambient temperature -10~+40°C without de-rating (IP20/NEMA1), -10~+50°C (IP00), with de-rating, its maximum operation temperature is 60°C
Storage temperature -20~+70°C
Humidity 95%RH or less (no condensation)
Altitude and vibration Altitude of 1,000 m (3,300 ft) or lower, vibration below 5.9m/ s2 (0.6G)
Functions Communication function RS-485 standard with built-in (MODBUS) (RJ45)
PLC function Built-in
UL, cUL, CE  
EMI protection The added noise filter complies with EM61800-3, 460V, 215 hp or below can be built-in.
EMS protection Follows EN61800-3
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