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 »
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 control 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
Specifications
Input Voltage: 230 Volt 3 Phase
Output Voltage: 230 Volt 3 Phase
Constant Torque Horsepower: 25
Constant Torque Amps: 73
Variable Torque Horsepower: 30
Variable Torque Amps: 79
Enclosure: NEMA 1
Additional Features: Includes built-in braking transistor.
Height: 14.17"
Width: 10.43"
Depth: 8.86"
Warranty: Factory New with Manufactures Warranty
Applications
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
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
Environmental
Conditions
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
Certifications/
Compliance
UL, cUL, CE
EMI protection
The added noise filter complies with EM61800-3, 460V, 215 hp or below can be built-in.
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