Lenze Frequency Inverter

Lenze frequency inverter drives are used in a wide variety of industries including materials handling, packaging, robotics and automotive. Lenze frequency inverterproducts are carefully coordinated and matched and can be combined as required to provide the right solution for mostneeds. Lenze frequency inverter drivescombine reliability with quality to enable Lenze to help increase the productivity for mechanical engineers and machine operators.

Lenze frequency inverterdrives are used for electronic speed control of AC induction motors. The needs of the market are wide and varied, and Lenze offers a broad range of standard products for everything from simple speed control to complex; each with a wide range of functionality, small physical size and exceptional performance. Lenze frequency inverterdrivesare reliable, flexible to apply, easy to commission, and meet the highest standards of quality. Lenze frequency inverter drives provide solutions to fulfill nearly any variable frequency drive needin the power range between 0.25 kW and 400 kW.

SMVector Lenze Frequency Inverter

The SMVector of Lenze frequency inverter drives is Lenze’s most advanced product. Lenze’s tradition of innovative compact design, performance and flexibility make the SMVector an attractive solution for a broad range of AC Motor applications. Lenze drives feature several communications protocols, networking drives and components into a system solution that can be done now or in the future.The Lenze SMVector NEMA 1 drives are the most common and cost effective drive enclosure for a wide range of applications including packaging, material handling / conveying, positive displacement pumping, and HVAC systems.

The Lenze SMVector NEMA 4X drives are available in two enclosure types– one is for indoor only use and one is for indoor/outdoor use. These rugged enclosure options are ideal for many industries including food / beverage, waste water, chemical metering and processing, and pharmaceuticals.The SMVector Series can be used with 3-phase AC induction motors and is available in NEMA 1 (IP31) , NEMA 4X (IP65) and NEMA 4X (IP65) with an integral disconnect switch. Filtered input versions of the SMV are available in NEMA 4X (IP65) models for compliance with the CE EMC directive.

MC1000 And MCH Lenze Frequency Inverter

The MC Series Lenze frequency inverter is an AC Tech legacy product and has been being used in production since the late 1970’s. The MC series Lenze frequency inverter drives are made in the United States and are an inexpensive solution for standard volts per hertz applications. MC Series drives are a common drive solution for pumps, conveyors, and other applications where high starting torque and full torque at low speed (RPM) is not required.

The MC series Lenze frequency inverter drives are built in rugged steel enclosures that hold up to wear and tear in factories across the globe. The AC Tech MC series drives have an easy to read 16 character LCD display above the drive keypad that allows for simple set up and daily operations. MC series Lenze frequency inverter drives are a constant horsepower drive and can be set up for simple applications requiring slow start and slow stop of an AC electric motor.MC series Lenze frequency inverter drives can also be applied in applications that require PID set-point control.

MC series Lenze frequency inverter drives come in two different models; the M1000 Series and the MCH Series. Most industrial applications will use the MC1000 series drive with a keypad that includes start, stop, up, down, forward/reverse, Program/Run, Auto/Manual and Enter buttons.MCH series drives are used in non-reversing industrial applications that require independent switching of start and stop from local to remote. MCH series Lenze frequency inverter drives are also used in applications where speed control from auto to manual is required. The MCH series keypad replaces the forward/reverse button with Local/Remote. Technical documentation for the MC1000 and MCH series Lenze frequency inverter drives can be found on the Lenze Americas Website.

To learn more about Lenze frequency inverter drives or for Lenze Repair and Replacement quotes, contact Precision Electric.

What Is A VFD?

VFD is an abbreviation that stands for Variable Frequency Drive. VFD’s arealso known as variable frequency drives, variable speed drives, adjustable speed drives, electronic motor controllers, orinverters.

VFD’s aresolid state motor control systems designed to control the speed of an AC (alternating current) electric motor. Variable frequency drives operate as load controls within AC electric motor applications; and variable frequency drives can reduce energy costsup to 50% by speed reduction on electric motorswhere the full speed (RPM) of the electric motor is not required.VFD’s are used in AC servo systems, air compressors, conveyor systems, lathes, mills, plastic extrusion, slitter lines, food processing, waste water treatment systems, submersible pumps, HVAC fans and blowers, and many more electric motor applications.

Many manufacturers will apply a VFD to rotating equipment to reduce amperage spikes upon start up of large electric motors.Choosing the right VFDfor an application will benefit rotating equipment by providing less wear on the electric motors where applied.Adjusting the acceleration and deceleration time of electric motors can extend the lifespan of an electric motor. Variable frequency drives provide the ability to control the frequency of starting and stopping of an AC electric motor.This ability allowsan AC electric motor to only operate when needed for the equipment it’s rotating, and electric motors have a longer lifespan if they are only running when they need to be.

Approximately one third of the world’s electrical energy is supplied by electric motors in fixed-speed centrifugal pump, fan, and air compressor applications. These fixed-speed applications hardly ever require the full load speed (RPM) of the electric motor in which they’re operating. By installing a VFD to these applications, electric motor speeds are reduced, and power costs can be reduced by 50% or more. Technology has allowed cost and physical size reduction of variable frequency drives, and has improved performance through advances in semiconductor switching devices, simulation, control techniques, and control hardware and software.

VFD Power Savings

The majority of variable frequency drives in the market today contain electronic circuitry that converts 60 Hertz Line power into direct current. The variable frequency drive converts this line power into a pulsed output voltage that duplicates varying alternating current to a desired frequency (speed).A properly applied VFD when paired with the correct electric motor will significantly reduce operating costs for manufacturers. This is particularly true for variable torque loads such as fans, blowers, and pumps.Blowers are often used with dampers to control air flow; these dampers may operate either manually or automatically. When dampers are closed, 50% of the electric motor current will drop to approximately 60% of full load nameplate current. By utilizing variable frequency drives in blower applications, the current draw of the motor will be reduced 30% for every 10% drop in speed. The same electric motor operating froman AC variable frequency drive at 50% speed, will draw approximately 20% of the full load current.

VFD Example Application:

A 10 horsepower AC electric motor, rated 90% efficient, operating across the line without an AC variable frequency drive, with the dampers operating between 50 70%, for 2000 hours per year will require 11,996 KWH. If the KWH charge is $.08 per KWH, the cost to run this motor will be: $1,248.00 annually.

The same 10 horsepower electric motor operating from an AC variable frequency drive, between 50 70% speed for 2000 hours per year will require 4,676 KWH. Operating cost at the same KWH rate will be: $432.00 per year. This represents a savings of $816.00 per year and is usually enough to pay for the AC variable frequency drives investment and installation costs, within the first 12 months of operation.If any electric motor application operates more hours than in the above example, and/orthe KWH charge is higher, the savings will quickly compound.

The energy saved on a utility bill from using a variable frequencydrive is often significant enough to pay for the variable speed frequencywithin a couple of months from installation date.Increasing and/or decreasing the start up time on an AC current electric motor via a variable frequencydrive can add years to the motor’s overall lifespan. Using a variable frequencydrive can also improve efficiency on production demands.

VFD Types

Volts Per Hertz drives are the most common type of VFDand areknown as a V/Hz drives, or volts by hertz drives. V/Hz variable frequency drives are used inapplications such as fans, pumps, air compressors, and other related applications wherehigh starting torque is not required. V/Hz variable frequencydrive applications typically do not require full torque when the AC motor is operating at less than the base speed (RPM) of the electric motor. V/Hz variable frequencydrives are the most inexpensive type of variable frequencydrive. V/Hz variable frequencydrives do not provide full motor torque at low RPM.

Open-Loop vector drives are also known as “sensorless vector” variable frequencydrives. Open loop vector drives adapted the name “sensorless vector” because they do not use an external encoder for speed feedback to the motor.Open loop vector drives are used in applications where high starting torque and full torque at low speed (RPM) is required. Open-Loop vector drives operating a motor a zero RPM should not be used on crane or hoist applications. Most open-loop vector drives are used on CNC machines, mixers, mills, lathes, and other applications where high starting torque or full torque at low RPM is needed.Open loop vector drives are usually more expensive than a V/Hz variable frequency drives.

Closed-Loop vector drives are used in applications where precise speed control (0.01%) is needed, or in applications where extensive programming is needed. Closed-Loop vector drives use an encoder on the motor to provide constant shaft position indication to the drive’s microprocessor. The encoder feedback allows the drive microprocessor to constantly control torque no matter how many RPM the motor is operating at. Closed-Loop vector drives are used to provide the motor to operate at full torque even at zero RPM. Closed-Loop vector drives are commonly used on hoist and crane applications because crane and hoist motors must produce full torque prior to it’s brake being released, or the load will drop and it will not be able to stop.

To learn more about VFD’s, please watch our YouTube Videobelow this post. For VFD repair and replacement quotes, contact Precision Electric, Inc.

Eaton HVAC Frequency Drives

Eaton HVAC frequencydrives were specifically engineered for HVAC, pump and fluid control applications. The power unit makes use of the most sophisticated semiconductor technology and a highly modular construction that can be flexibly adapted to the customers needs. The input and output configuration (I/O) is designed with modularity in mind. The I/O is compromised of option cards, each with its own input and output configuration. The control module is designed to accept a total of five of these cards. The cards contain not only normal analog and digital inputs but also field bus cards.

The HVX series of Eaton HVAC frequencydrives are obsolete and replaced by Eaton H-MAX drives.The HMAX series of Eaton HVAC frequency drives are designed to the HVAC market for fan, pump, and fluid control applications. The patented energy savings algorithm, high short-circuit current rating and intuitive user interface provide customers an energy efficient, safe, and easy to use solution for adjustable frequency drive needs.The H-MAX drive supports the increasing demand for energy savings in buildings, systems and facilities. Built in capabilities and unique features provide a competitive solution that can add value to any end user.

MVX9000 And M-MaxEaton HVAC Frequency Drives

The MVX9000 series of Eaton HVAC frequency drives are microprocessor-based, sensorless vector drives that provide adjustable speed control for three-phase motors. MVX9000 drives come with standard features that can be programmed to customize the drive’s performance to suit a wide variety of applications, and they include a digital display with operating and programming keys on a removable keypad.

MVX9000 series of Eaton HVAC frequency drives are obsolete and replaced by Eaton M-MAX drives.The M-Max Drive is a compact micro drive with a broad power range. The M-Max series of Eaton HVAC frequency drives feature conformal board coating, unique mounting characteristics, simple programming, and 50C Rating to makethe M-Max perfectly suited for machinery applications in many industries. Typical applications for the M-Max Eaton drive include Food and Beverage, HVAC, Packaging, Pumping, Textile, OEM, and more.

The M-Max series of Eaton HVAC frequency drives key features include:

  • Global acceptance
  • 50C ambient temperature environments
  • Conformal coating standard
  • Modbus-RTU as standard serial fieldbus
  • Side-by-side mounting and orientation flexibility to maximize panel space
  • Temperature controlled cooling fan to increase efficiency and extend life
  • On-board start-up wizard and preset macros to simplify commissioning
  • NEMA 1 kits available

To learn more about Eaton HVAC frequency drives or for Eaton HVAC drives repair and replacement quotes, contact Precision Electric.

Eaton SV Repair

Eaton SV Repair

Eaton SV repairshould be taken with extreme caution andonly be performed by technicians who have required training and experience with electrical equipment. Alwaysconsult an expert in the field when repairing or troubleshooting industrial electrical equipment. Most drive controllers have an internal DC bus that retains a charge after power has been cut to the drive, as a result, the power being cut doesn’t mean that the drive issafe to work with. Technicians working with variable frequency drives and other electrical equipmentmust always take extra precautions to ensure proper safety measures are taken to prevent injury or even death.

Variable Frequency Drives (VFD’s) have over the past decade allowed to become a cost efficient way to reduce power costs and increase system efficiency. Manufacturers around the globe within a wide range of industries are finding more ways to apply VFD’s to their rotating equipment.From past experience, smaller horsepower VFD’s typically fail in eight years and are more often replaced rather than repaired.Larger horsepower VFD’s last longer by virtue of repairs that often require replacement of circuit boards and other electrical components.

Eaton SV Repair Versus Eaton SV Replacement

Eaton SV repair is common for Sullair Service Centers and manufacturers who use Eaton equipment. Eaton SVrepair is preferred by Sullair service centersand manufacturers because Eaton SV replacement is more expensive than Eaton SV repair.Most companies who offer Eaton SV repair don’t have the capabilities or experience to repair Eaton equipment themselves; so they outsource the VFD repair to third party repair centers, or they send it to Eaton and charge their customer more than the actual repair cost. Eaton offers SV VFD repair services for their products but it’s inefficient because Eaton always has extensive lead times for repairs, and Eaton drive users cannot wait forextensive lead times due toproduction downtime.Precision Electric offerscomplete Eaton SVrepair, and all Eaton SVrepair jobs are performed in house at Precision Electric.

Eaton SV repairis an asset to manufacturers who use Eaton VFD equipment because Eaton usually recommends replacing their equipment when it fails. Eaton SV VFD replacement is more expensive than Eaton SV repair. Eaton SVreplacement also has extensive lead times that aren’t economical when production is down. Eaton SVrepair can be performed by Certified Eaton SV Repair Centers morequickly than waiting for Eaton to produce a replacement SV VFD.

ContactPrecision Electric today forEaton SV repairand Eaton SV replacement quotes.