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Supplier: Magnatex Pumps, Inc.
Description: The cost-effective variable speed control solution for general purpose applications. Magnetic Flux Vector Control Auto-tuning Selectable cooling fan operation mode Adjustable carrier frequency (0.7kHz to 14.5kHz) Compatible with FR-PU04 user interface UL & cUL listed / CE marked
- AC Input Phase: Single Phase
- Configuration: Panel Mount
- Maximum Output Voltage: 0.0 to 10 volts
- Number of Axes / Motors: 1
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Supplier: Magnatex Pumps, Inc.
Description: Advanced performance makes it possible to support a wide range of variable speed applications from conveyance and chemical machines to line control applications such as winding and printing machines. Improved flexibility allows users to tailor their VFD to meet their application
- AC Input Phase: Single Phase
- Communication Standards: RS485
- Configuration: Panel Mount
- Maximum Output Voltage: 0.0 to 10 volts
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Supplier: Magnatex Pumps, Inc.
Description: ‘Big Drive’ Vector Control Capability in a micro drive - delivering outstanding performance for a wide range of demanding loads. Advanced Magnetic Flux Vector Control gives 120:1 speed range All capacities have built-in brake chopper USB communications for fast commissioning Standard RS 485 serial
- AC Input Phase: Single Phase
- Communication Standards: RS485, USB
- Configuration: Panel Mount
- Maximum Output Voltage: 0.0 to 10 volts
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Supplier: Magnatex Pumps, Inc.
Description: Built to optimize 3-phase motor control, saving energy for virtually all general purpose applications. UL Type 1, plenum rated, enclosure designs (NEMA 1) Built-in EMC filter FR-DU07 programming dial and FR-Configurator programming software Bi-directional coasting motor restart RS-485 communications
- AC Input Phase: Single Phase
- Communication Standards: RS485
- Configuration: Panel Mount
- Maximum Output Voltage: 0.0 to 10 volts
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Supplier: Mitsubishi Electric Automation, Inc.
Description: This series achieves high precision and fast response that exceeds the performance of conventional general-purpose inverters. They can be used in specialized applications such as line control and elevators. By incorporating our original all-digital vector control, high starting torque and high speed
- AC Input Phase: Three Phase
- Application Categories: Variable Speed Drive
- Configuration: Panel Mount
- Continuous Output Current: 4.5 to 264 amps
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Supplier: Mitsubishi Electric Automation, Inc.
Description: NEMA 1 UL Type 1 Enclosure Designs: Drive can be mounted as a stand-alone unit. Built-in BACnet MS/TP: No option card required. Standard PLC programs with GX Developer: Control solutions for sequecing pumps and relay logic for damper end switch just to name a few. Dual I/O Option: Useful when
- Application Categories: Variable Speed Drive
- Configuration: Panel Mount
- Continuous Output Current: 4.6 to 475 amps
- Features: Regenerative Braking, Alarm / Status Monitoring
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Supplier: Mitsubishi Electric Automation, Inc.
Description: The E700SC Series is the safe torque off (STO) version of the E700. The E700SC is 6mm deeper than the standard E700. It is otherwise functionally equivalent, and is compatible with connectivity and I/O options cards when paired with the correct SC version of the E kits. The E700SC Series is compact
- AC Input Phase: Single Phase, Three Phase
- Application Categories: Variable Speed Drive
- Configuration: Panel Mount
- Features: Injection Braking
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Supplier: Price Pump Company
Description: Price® Pump is now offering two new variable frequency drives (VFD) that offer precision control and fast response that exceeds the performance of conventional 'general-purpose' AC inverters. These drives meet the requirements of OEMs, end users, installation companies and panel
- Control Signal Output: Analog Voltage, Current Loop, Switch / Relay Output, Network / Fieldbus Output
- Control Technique: Limit / Set Point Control, PID Control, Other
- Controller Inputs: Frequency Input, Serial / Digital Input, Network / Fieldbus Input
- Form Factor: DIN Rail, Stand-Alone
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Supplier: Price Pump Company
Description: VFD Drive - 1/8 to 10 HP; cost effective; simple to use. Price® Pump is now offering two new variable frequency drives (VFD) that offer precision control and fast response that exceeds the performance of conventional 'general-purpose' AC inverters. These drives meet the requirements of
- Control Signal Output: Analog Voltage, Current Loop, Switch / Relay Output, Network / Fieldbus Output
- Control Technique: Limit / Set Point Control, PID Control, Other
- Controller Inputs: Frequency Input, Serial / Digital Input, Network / Fieldbus Input
- Form Factor: DIN Rail, Stand-Alone
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Supplier: Mitsubishi Electric Automation, Inc.
Description: The E700 Series is the latest generation of Mitsubishi Electric’s Micro Sized Variable Frequency Drives. It replaces the popular E500 Series and utilizes the same mounting foot print. Advanced features and functions such as USB port for commissioning and monitoring, embedded M-dial and
- AC Input Frequency: 50 Hz, 60 Hz
- AC Input Phase: Single Phase, Three Phase
- Application Categories: Variable Speed Drive
- Configuration: Panel Mount
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Supplier: Instrumentation Northwest, Inc.
Description: The Redi-Flo Variable Frequency Drive is specially designed to control and protect Redi-Flo2® and Redi-Flo4® variable performance pumps. Features Precise Flow Control Motor Protection Dry-Run Protection Easily switch between Redi-Flo2 and Redi-Flo4 pumps 120V or 230V,
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Supplier: American Control Electronics
Description: The PMF Series is a variable frequency drive designed to run 115 or 230 VAC motors, whether single phase or three phase, at 50 or 60 Hz. With our "Doubler Mode", a 115 VAC line can be doubled to control 230 VAC motors. And unlike most variable frequency drives, the PMF
- AC Input Frequency: 50 Hz, 60 Hz
- AC Input Phase: Single Phase
- Configuration: PC Board
- Continuous Output Current: 3 amps
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Supplier: American Control Electronics
Description: The PMF Series is a variable frequency drive designed to run 115 or 230 VAC motors, whether single phase or three phase, at 50 or 60 Hz. With our "Doubler Mode", a 115 VAC line can be doubled to control 230 VAC motors. And unlike most variable frequency drives, the PMF
- AC Input Frequency: 50 Hz, 60 Hz
- AC Input Phase: Single Phase
- Configuration: PC Board
- Continuous Output Current: 5 amps
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Supplier: Automation24, Inc.
Description: The 1-phase basic SINAMICS V20 6SL32105BB215UV1 variable frequency drive from Siemens with a mains voltage of 200-240 V AC is suitable for industrial standard applications and is very versatile. It impresses with ease of use, fast commissioning process and cost-efficiency. The SINAMICS
- Communication Standards: Other
- Operating Temperature: -10 to 60 C
- Rated Power: 1492 watts
- Supply Voltage (AC): 230 volts
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Supplier: Automation24, Inc.
Description: The 3-phase basic SINAMICS V20 6SL32105BE222UV0 variable frequency drive from Siemens with a mains voltage of 380-480 V AC is suitable for industrial standard applications and is very versatile. It impresses with ease of use, fast commissioning process and cost-efficiency. The SINAMICS
- Communication Standards: Other
- Operating Temperature: -10 to 60 C
- Rated Power: 2238 watts
- Supply Voltage (AC): 480 volts
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Supplier: Automation24, Inc.
Description: The 3-phase basic SINAMICS V20 6SL32105BE175UV0 variable frequency drive from Siemens with a mains voltage of 380-480 V AC is suitable for industrial standard applications and is very versatile. It impresses with ease of use, fast commissioning process and cost-efficiency. The SINAMICS
- Communication Standards: Other
- Operating Temperature: -10 to 60 C
- Rated Power: 746 watts
- Supply Voltage (AC): 480 volts
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Supplier: Automation24, Inc.
Description: The 3-phase basic SINAMICS V20 6SL32105BE315UV0 variable frequency drive from Siemens with a mains voltage of 380-480 V AC is suitable for industrial standard applications and is very versatile. It impresses with ease of use, fast commissioning process and cost-efficiency. The SINAMICS
- Communication Standards: Other
- Operating Temperature: -10 to 60 C
- Rated Power: 14923 watts
- Supply Voltage (AC): 480 volts
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Supplier: OMEGA Engineering, Inc.
Description: The CN8590 is a 1/32 DIN microprocessor based controller that provides accurate closed-loop control of temperature and other process variables. With on-demand auto-tuning, and complete On/Off through full PID functionality, the CN8590 accepts inputs from K, J and T type thermocouples,
- Accuracy: 0.2000 ±% FS
- Control Signal Output: Switch / Relay Output, Pulse / Frequency
- Control Technique: Limit / Set Point Control
- Controller Inputs: DC Voltage Input, Current Loop (Transmitter) Input
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Supplier: Russells Technical Products
Description: Watlow's Series F4 controllers offer high performance PID control tailored for environmental chamber or furnace and oven applications. With one or two loops of control, along with industry leading control features, including cascade, differential, and ratio control, these controllers
- Control Signal Output: Analog Voltage, Current Loop, Switch / Relay Output, Pulse / Frequency, Serial / Digital
- Control Technique: PID Control
- Controller Inputs: DC Voltage Input, Current Loop (Transmitter) Input, Frequency Input, Switch / Relay Input
- Form Factor: Panel / Chassis Mount
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Supplier: Honeywell International, Inc.
Description: STAND ALONE TYPE 8.27 INCH WIDTH X 2.26 INCH DEPTH X 6.27 INCH HEIGHT SIZE UL 916, UL (CANADA AND US), CSA, CE, FCC APPROVAL VARIABLE AIR VOLUME AND UNITARY HVAC CONTROL APPLICATION 32 TO 122 DEG F OPERATING TEMPERATURE WEBS-AX, WEBS-N4
- Control Signal Output: Switch / Relay Output, Pulse / Frequency, Other
- Standards and Compliance: Other
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Supplier: Honeywell International, Inc.
Description: STAND ALONE TYPE 4.8125 INCH WIDTH X 2.26 INCH DEPTH X 6.27 INCH HEIGHT SIZE UL 916, UL (CANADA AND US), CSA, CE, FCC APPROVAL VARIABLE AIR VOLUME AND UNITARY HVAC CONTROL APPLICATION -40 TO 150 DEG F OPERATING TEMPERATURE WEBS-AX, WEBS-N4
- Control Signal Output: Switch / Relay Output, Pulse / Frequency, Other
- Controller Inputs: Other
- Number of Control Outputs: 6 outputs
- Number of Inputs: 4 inputs
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Supplier: Honeywell International, Inc.
Description: STAND ALONE TYPE 6.85 INCH WIDTH X 2.26 INCH DEPTH X 5.45 INCH HEIGHT SIZE UL 916, UL (CANADA AND US), CSA, CE, FCC APPROVAL VARIABLE AIR VOLUME AND UNITARY HVAC CONTROL APPLICATION -40 TO 150 DEG F OPERATING TEMPERATURE WEBS-AX, WEBS-N4, BACNET
- Control Signal Output: Switch / Relay Output, Pulse / Frequency, Other
- Controller Inputs: Other
- Number of Control Outputs: 11 outputs
- Number of Inputs: 10 inputs
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Supplier: Honeywell International, Inc.
Description: STAND ALONE TYPE 6.85 INCH WIDTH X 2.26 INCH DEPTH X 5.76 INCH HEIGHT SIZE UL 916, UL (CANADA AND US), CSA, CE, FCC APPROVAL VARIABLE AIR VOLUME AND UNITARY HVAC CONTROL APPLICATION 32 TO 122 DEG F OPERATING TEMPERATURE WEBS-AX, WEBS-N4
- Control Signal Output: Switch / Relay Output, Pulse / Frequency, Other
- Controller Inputs: Other
- Number of Control Outputs: 11 outputs
- Number of Inputs: 10 inputs
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Supplier: OMEGA Engineering, Inc.
Description: ±0.05°C/°C TC @ 25°C (77°F) • 2 Outputs: Control, Alarm, or Retransmission of Process Variable. • Universal Inputs: Thermocouple, RTD, Process Voltage
- Accuracy: 0.0300 ±% FS
- Control Signal Output: Analog Voltage, Current Loop, Switch / Relay Output, Pulse / Frequency
- Control Technique: Limit / Set Point Control, PID Control
- Controller Inputs: DC Voltage Input, Current Loop (Transmitter) Input
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Supplier: OMEGA Engineering, Inc.
Description: ±0.05°C/°C TC @ 25°C (77°F) • 2 Outputs: Control, Alarm, or Retransmission of Process Variable. • Universal Inputs: Thermocouple, RTD, Process Voltage
- Accuracy: 0.0300 ±% FS
- Control Signal Output: Analog Voltage, Current Loop, Switch / Relay Output, Pulse / Frequency
- Control Technique: Limit / Set Point Control, PID Control
- Controller Inputs: DC Voltage Input, Current Loop (Transmitter) Input
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Supplier: Dover Flexo Electronics, Inc.
Description: The EasyWeb™ is an open loop torque controller designed to maintain constant web tension or provide taper tension to center driven rewind or unwind applications. Web tension is regulated by controlling motor or brake torque based on varying levels of roll diameter. An Inertia
- Control Signal Output: Analog Voltage, Current Loop
- Controller Inputs: Frequency Input
- Form Factor: Panel / Chassis Mount, Other
- General: Rate Indication / Control
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Supplier: OMEGA Engineering, Inc.
Description: The NFX9000 adjustable frequency AC Drives are designed to provide adjustable speed control of 3-phase motors. These microprocessor-based drives have standard features that can be programmed to tailor the drive's performance to suit a wide variety of application requirements. The NFX9000
- AC Input Frequency: 50 Hz, 60 Hz
- AC Input Phase: Single Phase, Three Phase
- Application Categories: Variable Speed Drive
- Configuration: Stand Alone
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Supplier: Lowara
Description: The Lowara GVF series booster sets are fully automatic booster sets for water supply. They are equipped with 2-6 pumps (where one can be a jockey pump), pressure transmitters and control panel with a SD60 controller and a variable frequency drive, all mounted on a frame for easy
- Horsepower: 49.59 HP
- Housing Material: Stainless Steel
- Maximum Discharge Pressure: 232 psi
- Maximum Discharge Flow: 3302 GPM
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Supplier: VAST STOCK CO., LIMITED
Description: Switching Controllers Variable Frequency SMPS
- Regulator Category: Switching Regulator
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Supplier: ITT Corporation
Description: PumpSmart PS220 provides the next level in intelligent pumping by using a standard variable frequency drive and directly embedding pump specific algorithms onto the drive. The PS220 drive is a microprocessor based Direct Torque Controlled (DTC) adjustable speed AC drive. Pump
- Control Technique: Linear Control
- Controller Inputs: DC Voltage Input, Current Loop (Transmitter) Input
- Form Factor: Panel / Chassis Mount, Stand-Alone
- Media: Liquid
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Supplier: Chicago Pneumatic and Pneumatech
Description: maintenance cost 73-182 psig pressure range 20-100% turndown capacity ES4000 Advanced graphic controller IP55 TEFC High Frequency Motors designed for variable speed use Heavy duty, 2-stage pre-filtration Shipped with synthetic oil Easily
- Compressor Technology: Rotary Screw
- Discharge / Operating Pressure: 73 to 182 psi
- Features: Integral Filter
- Flow Capacity: 9 to 43 SCFM
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Supplier: CARLO GAVAZZI Automation Components
Description: monitoring and a communication interface to provide data of the monitored variables and diagnostic information in real-time. The variables that can be read out from each RG..D..N are current, voltage, frequency, power, energy consumption and running hours. The status of each
- Control Signal Output: Switch / Relay Output, Network / Fieldbus Output
- Controller Inputs: Switch / Relay Input, Network / Fieldbus Input
- Form Factor: Circuit Board
- Multi-Function Controller: Yes
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Supplier: CARLO GAVAZZI Automation Components
Description: The RG..N solid state relays are the switching components in the NRG BUS chain. Similar to the RG..D..N, the RG..CM..N has integrated monitoring and a communication interface to provide variables and diagnostic information in real-time. The variables that can be read out are current,
- Control Signal Output: Switch / Relay Output, Network / Fieldbus Output
- Controller Inputs: Switch / Relay Input, Network / Fieldbus Input
- Form Factor: Circuit Board
- Standards and Compliance: RoHS Compliant
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Supplier: ITT Corporation
Description: Take control of your pumping system with the PumpSmart model PS200! Since 1999 the PumpSmart patented logic has been changing process control and protection for pumping systems. The PumpSmart PS200 integrates an industrial strength variable frequency drive with years of pump control
- Control Technique: Linear Control
- Controller Inputs: DC Voltage Input, Current Loop (Transmitter) Input
- Form Factor: Panel / Chassis Mount, Stand-Alone
- Media: Liquid
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Supplier: Xoxide
Description: Allowing any user to keep a close watch on the going-on within their PC, the Scythe Kaze Master 5.25" Bay Fan Controller is able to control and monitor up to 4 fans and 4 temperature monitor independently through a sharp VFD display. Offering the ability to safely monitor and run your
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Supplier: Allied Electronics, Inc.
Description: , without a power supply, to the Magelis(r) XBTN Compact Display/Operator Interface units. TWIDO® connects to TeSys U-Line starters for power control and ATV31 Variable Frequency Drives for high quality performance at a very low cost. Features: Flexible — Choose
- Expandable: Yes
- Maximum Number of Channels: 4
- Number of Inputs: 14
- Number of Outputs: 10
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Supplier: Richardson RFPD
Description: The AD8368 is a variable gain amplifier (VGA) with analog linear-in-dB gain control that can be used from low frequencies to 800 MHz. Its excellent gain range, conformance, and flatness are attributed to the Analog Devices, Inc. X-AMP® architecture, an innovative technique for
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Supplier: Acromag, Inc.
Description: signals to a PLC or controller as a voltage, current, or a pulsed input. Typical applications include calculating a sum, delta’s, average, flow rate, volume, weight, power, and other scaled or computed variables. Math modules are available with either DC voltage/current output or
- Analog Input Channels: 2 #
- DC Voltage Input: Yes
- Differential Channels: Yes
- Form Factor: DIN Rail
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Supplier: RS Components, Ltd.
Description: Power factor controllers with variable CRM, CCM, and DCM that enable power factor correction. Maximum Switching Frequency = 30.5 kHz Start-up Supply Current = 20mA Maximum Source Current = 290µA Maximum Sink Current = 48µA Maximum Supply Current = 5.2 mA Number of Outputs = 1
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Supplier: Fuji Electric Corp. of America
Description: Fuji Electric’s new FRENIC-Mini (C2) Series provides excellent performance for both single-phase and three-phase applications, and is available in multiple configurations to support 1/8 HP up to 20 HP AC drives / variable frequency drives (VFD) / v/ Hz vector drives. With an expanded
- Application Categories: Variable Speed Drive
- Drive Type: AC Induction Motor, AC Synchronous Motor, AC Sensorless Vector Drive
- Features: Brake Output, Alarm / Status Monitoring
- Operating Temperature: -10 to 50 C
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Supplier: Delta Electronics (Americas)
Description: The VFD-C2000 series is a high-level field oriented control AC motor drive with a high-performance variable-frequency technology, FOC control. It features versatile driving controls, modular design, wide variety of applications, easy maintenance, low malfunction rate, self diagnosis and
- AC Input Frequency: 50 Hz, 60 Hz, 400 Hz
- AC Input Phase: Single Phase, Three Phase
- Communication Standards: CANopen, DeviceNet, Ethernet, PROFIBUS®, RS485
- Configuration: Stand Alone, Panel Mount, DIN Rail
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Supplier: MFP Automation Engineering
Description: MFP supplies quality drive and control products from these fine manufacturers: Parker Servo Stepper Parker SSD Drives AC Variable Frequency Drives WEG Soft Starters Yaskawa AC Variable Frequency Drives
- Application Categories: Motor Speed Controller
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Supplier: RS Components, Ltd.
Description: Power factor controllers with variable CRM, CCM, and DCM that enable power factor correction. Maximum Switching Frequency = 30.5 kHz Start-up Supply Current = 20mA Maximum Source Current = 290µA Maximum Sink Current = 48µA Maximum Supply Current = 5.2 m
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Supplier: Dart Controls, Inc.
Description: Rated for 10 amps continuous current, the 65E10 is a high performance PWM control for 12, 24, and 36-volt battery powered equipment. Features include adjustable maximum speed, minimum speed, current limit, I.R. compensation, and acceleration, plus a quiet operating frequency of 18kHz. A speed
- Application Categories: Battery Controlled, PWM Drive, Variable Speed Drive
- Configuration: Panel Mount
- Continuous Output Current: 10 amps
- Drive Type: DC Brushed Motor
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Supplier: Endress+Hauser, Inc.
Description: Coriolis Mass Flow Measuring System For fueling with Compressed Natural Gas (CNG) Your benefits The Promass measuring devices allow you record multiple process variables (mass/density/temper ature) simultaneously during operation for diverse process conditions
- Mass Flow Rate: 0.0 to 330 lbs/min
- Electrical Output: Frequency, Switch
- End Fittings: Flanged
- Features: Measures Density, Measures Temperature
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Supplier: Infineon Technologies AG
Description: high switching frequency High efficiency with adaptive ZVS operation and frequency law for variable output design Safe and robust SR operation with DCM operation Ease of design with dual integrated gate drivers and start-up cell Ease of configurable design with GUI
- Configuration / Function: Flyback Converter
- IC Package Type: Other
- Operating Temperature: -25 to 125 C
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Supplier: Microchip Technology, Inc.
Description: MIC2125 and MIC2126 are constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2125/6 operates over an input voltage range from 4.5V to 28V and can be used to supply load current up to 25A . The output voltage is adjustable down
- IC Package Type: Other
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The Effect of PWM Frequency on Permanent Magnet Synchronous Motor Noise Many applications utilizing permanent magnet synchronous miniature motors demand driving the motors either at more than one load point or through specific load cycles. Running the motor at (read more)
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with integrated BAS communication, advanced bypass control, or multiplex pump control, look no further than the HV600 family to meet a wide range of variable speed needs in building automation. As Yaskawa’s new variable frequency drive for building automation, the HV600 will address every (read more)
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CENTERLINE 2100 motor control center (MCC), configured with a new PowerFlex 755TS variable frequency drive, delivers these solutions (read more)
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Browse Mass Flow Meters and Controllers Datasheets for Eldridge Products, Inc. -
predictably cooperate with one another. Variables and outputs from a program structure can be referenced by other programs, providing the ultimate automation development environment. The MP2600iec motion controller combines execution of all five IEC61131-3 programming languages, pre (read more)
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Selecting Explosion-Proof Motors and Variable Frequency Drive Controllers for Hazardous Environmental Applications
important to the success of a XP motor operated on variable frequency drive power. The proper application of variable-frequency drive controller power to AC induction motors can be difficult even in relatively simple applications. When using a variable-frequency controller, the non-pure sine wave
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Understanding Variable Frequency Drives and Applications
Variable frequency drives (VFDs) are solid-state electronic motor controllers that efficiently meet varying process requirements by adjusting the frequency and voltage of power supplied to an alternating current (AC) motor, enabling it to operate over a wide speed range.
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7 Benefits of Using Variable Frequency Drives (VFDs) to Control Your Crane or Hoist
Variable frequency drives, or VFDs, are a type of AC motor controller that drive an electric motor by varying the frequency and voltage supplied to it.
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Reference Guide: Glossary of Terms
AC Motor - AC Motors may be operated at a constant speed, without variable speed control, or may be furnished with a variable frequency controller for variable speed control. Variable speed AC Motors generally provide a 10:1 drive turndown ratio, typically for powering a feeder.
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Feeder increases productivity , reduces waste, and prevents worker injury
approximately. 6% of the material through improper mixing. With. the CVC feeder and variable frequency controller,. the loss rate has dropped to less than 1%.
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PAT: The Value of Better Control
in this architecture is feed-forward control variables or process disturbance indicators. A model-predictive projection, or variable trajectory, of what is calculated to affect quality can respond to disturbance variable changes and make corrective controller action before quality is significantly
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Controlling Duct Pressure
application for this product. This article will discuss a typical application - controlling static pressure in a duct by varying fan speed with a Variable Frequency Drive (VFD). This system could also be used to control the pressure with inlet vanes, discharge dampers, bypass dampers, etc. The same
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The Advantages of Pivoted
frequency of the fan or fan components shall not be within 20% of the blade pass frequency. When used on a variable speed drive, a fan with one or more component resonances within the speed range of operation will require all speeds within 20% of any resonant frequency of the fan to be "locked out
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Adaptive Digital Controller and Design Considerations for a Variable Switching Frequency Voltage Regulator
DIGITAL VARIABLE FREQUENCY CONTROLLER DESIGN AND CONSIDERATION .
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Adaptive step-size digital controller for switching frequency auto-tuning
Figure 1 shows the proposed adaptive-step-size variable frequency controller algorithm flowchart.
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A fully digital, energy-efficient, adaptive power-supply regulator
Given a variable frequency controller powered off the regulated supply, it is possible to keep the controller’s power- consumption overhead at a fixed percentage of the total power consumed.
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AWWA M2 - Instrumentation and Control
However, recent advances in the development of higher-power semiconductors have improved the power-handling capabilities of variable frequency controllers .
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A discrete time controller for a single stage three level resonant PFC converter operated with variable frequency phase shift modulation
The control of this converter is achieved via a combined Phase Shift Modulation (PSM) and Variable frequency controller .
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Investigating an LCL load resonant inverter for inductive power transfer applications
The in- verter uses a variable frequency controller and operates in discon- tinuous current mode.
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Variable Frequency AC Motor Drive Systems
It is aimed at explaining the motors in simple terms with particular reference to their use with variable frequency controllers ; the ways of getting the best out of them and the adverse features of their performance.
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A small signal state space model of single stage three level resonant AC/DC converters
Modulation (PSM) and Variable frequency controller .