Preventing Electrical Bearing Damage Caused by VFD’s

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FACT: Every motor controlled by a variable frequency drive (VFD) should have bearing protection.

WHY?: Variable frequency drives induce voltage to the electric motor’s shaft that discharges through the bearings. This voltage can cause severe pitting, excessive bearing noise and eventually bearing failure (see picture below).

IT GETS WORSE: Not only the motor’s bearings are at risk but coupled equipment like gear boxes, encoders, brake motors, etc. are also at risk of damage. Installing a bearing protection ring on your electric motor will channel that shaft voltage away from your bearings and safely into ground.

 

Electric Motor Bearing Failure

Pitting in a electric motor’s bearing cause by shaft voltage induced by a variable frequency drive

 

 

 

 

 

 

 

REMEMBER: Insulating bearing housings alone does not prevent shaft current from discharging through the electric motor’s bearings and coupled equipment.

SOLUTION: Precision Electric can help you protect your bearings. Its cheaper than you think and it stops you from paying frequent electric motor repair cost.  For more information on pricing on bearing damage protection and general purpose and inverter duty electric motors,

Please call toll free: 877-625-2402.

We will do everything we can to minimize your down time and maximize your productivity.

How We Repair AC Motor Speed Controllers Or VFDs Professionally

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We repair and warranty all major AC and DC Motor Speed Controllers, feel free to call now at 1-877-625-2402 for a free quote or fill out the Digital AC or DC Drive Quote Request Form. For those of you looking to repair the drive yourselves, our procedure for professional repair is listed below.

The industrial electronics repair industry is one that should be taken with extreme caution. For those who do not have the required training or experience to work with electrical equipment, it is strongly recommended you consult an expert in the field when repairing equipment such as AC Motor Speed Controllers.

Many AC Motor Speed Controllers have an internal DC bus that retains a charge after power has been cut to the drive, as a result, just because line power is cut off from the equipment, it does not necessarily mean it is safe to work with. You must always take extra precautions to ensure proper safety measures are taken and injury or even death do not occur.

Precision Electric has spent years working with electrical components and AC Motor Speed Controllers as well as standard DC and Servo Motor Speed Controllers. The troubleshooting techniques for each brand of drive can be unique, but the overall structure of troubleshooting always remains the same. The ultimate goal when repairing an AC Motor Speed Controller is to diagnose, repair and re-commission the unit as quickly as possible, so there are some steps that should be taken before any dis assembly even takes place.

Here are all of the steps illustrating how Precision Electric repairs AC motor speed controllers professionally and quickly:

Step 1: Take Notes

This is often a subject that is passed by many individuals who are attempting to repair industrial equipment. When a unit first hits our bench we make note of many important aspects of the equipment including, but not limited too:

    1. Manufacturer
    2. Serial Number
    3. Reason for Service
    4. Urgency (Rush Overtime or Standard)
    5. Visual Inspection of External Device

Step 2: Conduct Diode and IGBT Tests

There are a number of methods to test the input and output power section of a drive, and this step is essential prior to applying power to the unit. If for any reason there is a short on the input side or output side of the drive, further damage can be caused to the unit if power is applied to it.

For this reason, we use a meter to properly test the input and output power sections of the drive prior to applying any power to the actual unit. If a short is found, quite often the unit can be disassembled and the cause of the short can be diagnosed and quoted for repair. If the repair is too costly, then a replacement is recommended.

Step 3: Power The Unit

If the input and output power sections of the AC Motor Speed Controller test healthy, then now is the time to power the unit up to see what we get. It is at this point that all of the safety precautions must be taken to ensure death or injury do not occur. On our test bench, we prefer to slowly increase the voltage to the unit until the rated input voltage of the drive is achieved.

Depending on whether or not the drive gives us a display will determine what further action will be taken. If no display is available, dis assembly and diagnosis of the internal power supply of the control section of the drive is likely necessary to further evaluate cause of failure and establish a quotation.

Step 4: Run A Motor

If the previous three tests have passed, then it is time to run a basic jog function of the drive with a simple template program. Often when a drive comes into our facility, we make sure to backup whatever program is currently stored in the drive prior to inputting a template program and running a test procedure. This ensure we have a backup copy of the program.

The best method for backing up depends on the brand of drive, but after it has been backed up, we typically will either reset the AC motor speed controller to factory defaults through the keypad and recommission a basic start, stop and job application or closed loop if an encoder is involved. If the motor will not run, it will be necessary to check the output voltages and current rating going to the motor to see if the AC motor speed controller is “firing” properly to move the motor.

Step 5: Contact The Customer

Usually at this point we have established some failure in the unit, if for some reason there seems to be no issues at this point further communication with the customer is often necessary.

At this point we will gather application specific information from the customer to establish whether or not it may be some outside issue associated with the system including, but not limited to, PLC communications, faulty IO, bad wiring or even bad cabling. There is no single way to do this step, as it really depends on a wide variety of variables.

Step 6: Send a Tech

If the customer cannot establish failure on any other aspect of the machine and the drive appears to test fine, then it may be necessary to send a field service technician on site to establish cause of failure.

Our field service techs are trained to troubleshoot any issue ranging from standard AC Motor Speed Controllers to advanced robotics and PLCs. They are trained to establish cause of failure as quick as possible.

Conclusion:

Precision Electric has used these techniques over the past 20 years to establish one of the best reputations for the industrial service industry. These methods for testing AC motor speed controllers have been well established and have resulted in the repair or replacement of thousands of industrial AC motor speed controllers.

 

How We Repair Servo Drive Servo Motors Professionally

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how-to-repair-servo-drive-servo-motors-professionally

We repair and warranty all major AC and DC Servo Motors and Controllers, feel free to call now at 1-877-625-2402 for a free quote or fill out the Servo Motor and Drive Quotation Form. For those of you looking to repair the drive yourselves, our procedure for professional repair is listed below.

For those interested in repairing servo motors and servo drives, it is important to note the extreme care that should be taken prior to conducting any disassembly of a servo motor or servo drive unit.

All servo motor and servo drives are mechanically calibrated between multiple facets of the unit to ensure the proper positioning of the device when it is commissioned. Failure to properly dis assemble a servo motor or drive can actually cause the unit to become unusable in the future.

The inner workings of servo motors and servo drives are both separate, and thus they should be treated separately. This particular article focuses primarily on troubleshooting the servo motor that is connected to the servo drive.

Servo motors are specifically designed with what is known as “feedback” capabilities so that the servo drive can maintain positioning of the motor within fractions of an inch, and many times even more accurate when necessary. Servo motors are specifically designed to withstand high amounts of holding current as well as extremely fast start stop procedures so that accuracy can be maintained at all times.

This feedback connected to a servo motor often comes in the form of an encoder or resolver, depending on the type of encoder or resolver you might have, troubleshooting your servo motor may be impossible. In many cases, manufacturers such as Allen Bradley, or Rockwell, implement a proprietary resolver or encoder feedback so it cannot be repaired without their diagnosis and repair tools. Regardless, there are many more aspects to a servo motor that can go bad other than the encoder or resolver – so it is best to start at those places.

The following is the procedure used by Precision Electric illustrating how to repair servo drive servo motors professionally.

Step 1: Take Notes

This is often a subject that is passed by many individuals who are attempting to repair industrial equipment. When a unit first hits our bench we make note of many important aspects of the equipment including, but not limited too:

    1. Manufacturer
    2. Serial Number
    3. Reason for Service
    4. Urgency (Rush Overtime or Standard)
    5. Visual Inspection of External Device

Step 2: Check The Shaft

It is important at this point to establish whether or not the servo motor shaft has been bent, damaged or broken. If this is the case, a new shaft may need to be ordered or machined in order to recommission the unit. In some cases, a bent shaft cannot even be replaced and this can quickly become a quote for replacement.

A bent shaft on a servo motor can cause extreme wear to the device over time due to vibration and heat. A bent shaft can also cause slip on a gear box and loss in positioning resulting in unexpected faults from the servo drive. You may need to use a caliper to establish the proper positioning of the shaft within the closest accuracy possible.

Step 3: Check The Encoder and Motor Cables

Hopefully the customer sent the communications cable with the unit so you can test the pin-out of the cable to ensure all of the wiring has a strong signal. In instances such as these, you may need to pull up pinout information from the servo motor manufacturing website to ensure you are testing the appropriate cables. In many cases, an encoder cable with have a pin for each channel of A, A not, B, B not, Positive Voltage and Common.

In some cases it will also have a Z and Z not pulse as well as a shield. Of course, not all customer are able to send the cable with the unit because they sent you a spare to repair – if that is the case you are really left with no other choice than to move on to the next step. Finding a bad cable early on is a great way to solve servo motor feedback issues without ever even requiring disassembly of the servo motor.

For the motor cable, you are looking at 3 separate phases, 2 armature wirings and sometimes commutation wiring. Using your meter, test the end of each cable to ensure there are no shorts between any of those connections.

Step 4: Check The Bearings

The shaft coming out of the servo motor should rotate freely with little resistance. This is assuming you have actually disconnected the cables from the original servo drive. The drive often causes resistance when rotating the shaft if it is connected to the servo drive through the motor cables.

If there is “bouncing” when attempting to rotate the shaft then it is likely due to a short within the motor or a bearing beginning to fail. In either case, it is bad and the servo motor will need to be disassembled for further diagnosis.

Step 5: Test The Motor For Shorts

This step is essential to further diagnostics. At this point you need to test the motor to ensure there are no shorts within it. Using your meter, you will want to test from phase to phase to ensure the connections are open. Do the same with the armature connections. There should be no shorts between them. If you find a short at this point it is likely the cause of the failure.

Servo motor shorts can be caused from a variety of reasons including contamination, overheating and wear and tear – the only real way to find the source of the short is to disassemble the unit and establish the cause of failure.

Step 6: Rotate the Motor

Assuming the prior tests have all passed, apply a small voltage starting from 0 volts to the armature winding of the servo motor. Slowly increase this voltage using your variable power supply until the shaft begins to turn. It is at this point you can further evaluate whether there is unnecessary vibration of the servo motor during rotation or whether the shaft appears to wobble or “bounce” due to a bent shaft or bad bearing.

In any case, rotating the motor prior to disassembling it is a good idea if it is possible – this will let you know that the servo motor at least functions on some level prior to establishing the original cause of the failure.

Step 7: Contact the Customer

If everything has tested healthy at this point it may be a good idea to contact the customer and get more details as to the original cause of failure. It is quite common with servo motor and servo drive applications that the cause of the failure was external to the motor itself. The servo motor often was doing what its job was intended to do, stop within a fraction of an inch of inaccuracy and fault.

Most people do not realize that an outside application change or environmental change can cause fluctuations in the configuration of the servo motor that can cause faults. It is also important to establish whether or not the servo motor was properly tuned for the application to begin with. Sending a field service tech and getting the servo motor properly tuned may cause the issue to go away.

Step 8: Carefully Disassemble The Servo Motor

When we say carefully, we mean carefully. You should mark the location of every detached piece with a punch to or file to ensure you reassemble the unit exactly as it was assembled. Failure to do this will often cause the servo motor to produce exceeding level of vibration which can cause further failures or not function at all. It is also sometimes wise to take photographs as you are disassembling the unit so you have a log of how the servo motor looked prior to each phase.

This section cannot be emphasized enough, as you remove more and more pieces of the servo motor take a closer visual inspection of each element within the motor including the commutator, armature, shaft and brushes. Try to locate any possible cause of failure before continuing to disassemble the drive. The sooner you find the cause of failure at this point the better, as it means less reassembly is required.

Once you have established the cause of failure your response will depend on both the manufacturer of the servo motor and the original cause. In many causes, certain brands will not allow you to purchase parts for their servo motors and a replacement may be required. There are certain aspects of a servo motor that can be replaced or repaired by third parties such as the armature winding or brushes.

Step 9: Send a Tech

If the customer cannot establish failure on any other aspect of the machine and the servo motor appears to test fine and be in good shape after disassembly, then it may be necessary to send a field service technician on site to establish cause of failure.

Our field service techs are trained to troubleshoot any issue ranging from standard AC Motor Speed Controllers to advanced robotics and PLCs. They are trained to establish cause of failure as quick as possible.

Conclusion:

Precision Electric has used these techniques over the past 20 years to establish one of the best reputations for the industrial service industry. These methods for testing servo motors have been well established and have resulted in the repair or replacement of thousands of industrial servo drive servo motors.

 

Industrial Manufacturing Preventative Maintenance

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Precision Electric, Inc offers preventative maintenance services to the industrial manufacturing world to prevent bearing failure in AC and DC electric motors. Bearing failure can lead to an electric motor’s winding to explode and rewinding an electric motor winding can be very expensive. Preventative maintenance services are one way to increase production and decrease downtime due to bearing failure on rotating equipment.

Precision Electric uses state-of-the-art Vibration Analysis testing equipment for preventative maintenance services to prevent bearing failure on rotating equipment to extend the life span of the customer’s equipment. Preventing bearing failure is the main focus of Precision Electric Preventative Maintenance Services. Preventative maintenance services are also the best way to reduce long-term repair expenses on equipment, because the longer equipment stays in production without service, the more money it will cost when the equipment fails and requires repair work.

Why Choose Precision Electric?

Industrial Manufacturing Preventative MaintenancePrecision Electric Preventative Maintenance consists of many testing processes and several different professional procedures. Precision Electric electrical engineers have hundreds of years combined experience. Precision Electric isn’t like their competition. Precision Electric competition usually repairs electric motors in an assembly line fashion to cut overhead costs and maximize profits.

At Precision Electric the same electrical engineer who begins a repair job, also works on the entire repair process until the repair has been completed. This unique process is to ensure employee accountability for each individual repair job. Precision Electric services Preventative Maintenance to manufacturers all over the United States. Precision Electric Preventative Maintenance services can be quoted prior to sending equipment to our facility. Call Precision Electric today to for a Preventative Maintenance repair quote for your equipment.

 

 

Lenze AC Tech SMVector Drive Acceleration Time Parameter

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In this article I will discuss how to program the Lenze-AC Tech SMVector acceleration time parameter. The Lenze-AC Tech drive acceleration time parameter is very simple to change.

The Lenze AC Tech SMVector drive acceleration time parameter default is 20 seconds for the motor to reach full speed (rpm). For most applications, 20 seconds is not efficient. Most applications using the Lenze-AC Tech SMVector desire an acceleration time of about 4-5 seconds.

To change the Lenze-AC Tech SMVector acceleration time parameter you will first need press the “M” button on the drive keypad. Once you’ve pressed the “M” key, The “PASS” flashes on the screen for a couple seconds and is replaced with “0000”.  Using the arrow keys this should be changed to the password.  Default is “225”.

After you’ve entered the password into your Lenze-AC Tech SMVector drive you will need to press the “M” key again. Now the screen will say “P100” which means you can now change the acceleration time parameter on your Lenze-AC Tech SMVector drive.

Simply press the arrows on keypad until you come to “P104” which is the acceleration time parameter for the Lenze-AC Tech SMVector drive. Once you see “P104” on the drive screen, press the “M” key again. Now use the arrow keys until you’ve reached your desired acceleration time for your Lenze-AC Tech SMVector drive application.

 

 

Hitachi WJ200 Variable Speed Drive

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Hitachi America, Ltd recently announced that they have released two new voltage class variable speed drive models in the WJ200 series.

The new voltage class for the Hitachi WJ200 variable speed drive ranges from 100-120VAC, single phase input and three phase output.

The Hitachi WJ200 variable speed drive is extremely versatile, complete with sensorless vector technology for applications where high starting torque apply as well as full torque at low RPM.

The Hitachi WJ200 variable speed drive in the 100v class is available in horsepower sizes ranging from 0.5HP through 1.5HP. The Hitachi WJ200 variable speed drive in the 200v class as well as the 400V class is available in horsepower sizes ranging from 1/4HP through 25HP.

A few of the features for the Hitachi WJ200 variable speed drive include:

  • Simple position control capability
  • Dynamic braking transistor in all models
  • Easy setup and operation via standard integral keypad
  • Optional enhanced keypad or via PC software
  • Simplified autotuning procedure
  • Many more features

We work with Hitachi WJ200 variable speed drives in new sales as well as repair work. If you have a Hitachi WJ200 variable speed drive that needs replaced, or quoted for repair, give us a call.

AC and DC Drive Repair

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When choosing a repair facility for AC and DC drive repair, manufacturers should always consider a repair facility with an extensive, reputable background in customer service. Most vendors in the industrial manufacturing world will sell a repair or a drive but do not offer technical support. Precision Electric’s technical support is of equal quality as their repair services. Precision Electric aims to prevent downtime for customers while keeping production at a maximum.

Precision Electric, Inc. is your best source for AC and DC drive repair. We have been working in the industrial manufacturing world for over 29 years with hundreds of years combined experience. Precision Electric, Inc. uses the best testing equipment for AC and DC variable frequency drive repair. Precision Electric repair services include a 1 year warranty from installation date.

Precision Electric also provides technical support to customers for AC and DC drive repair. If you have an AC or DC drive that needs repaired, call Precision Electric for a free repair quote. Many AC and DC drive repair companies in the industrial manufacturing world charge their customers an inspection fee even if the repair is not approved, but Precision Electric doesn’t. Precision Electric only charges for emergency repair quotes that need to be quoted immediately.

By choosing Precision Electric for AC and DC drive repair, we guarantee a long-lasting relationship with manufacturers. Call Precision Electric today for an ac or dc drive repair quote. Precision Electric, Inc. also offers emergency and rush repair services 24 hours a day.

 

 

AC Electric Motor Stator Winding Repair

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Precision Electric has more than 100 years of AC electric motor winding experience. We have rewound thousands of AC electric motor stators in the 29 years Precision Electric has been serving the industry. Many things go into winding AC electric motors. Here is a short example of how Precision Electric winds AC electric motors.

Making AC Electric Motor Coil Connections

Once a AC electric motor has entered our repair facility due to a possible failed winding and it has been through the initial testing process, we will disassemble the motor and begin the AC electric motor stator winding investigation. The first sign of a failed motor winding is the very recognizable odor from a burned up winding. If the odor doesn’t get our attention a full analysis of the motor stator will. The failed area of the AC electric motor stator is then looked at further and a root cause failure report is completed. We will then start taking all nameplate and stator winding information and fill out a EASA Data Card.

The EASA Data Card will give the AC Electric Motor Stator Winding Tech the following information:

  • Nameplate Data
  • Coil and stator core dimensions
  • Connection type
  • Number of circuits used
  • Coil pitch
  • Coil grouping type (salient-pole, consequent-pole)
  • Wire size
  • Number of wires in multiple that make up coils
  • Number of turns of magnet wire in each coil

Once all the required data is recorded, we can begin the actual AC electric motor stator winding process. The proper wire size is pulled from our stock and placed on our winding machine. The coils are then turned and placed on a clean winding rack. In the meantime, the AC electric motor stator is stripped of all the old winding and placed in burn down oven to remove all of the old insulation. After going though a full cycle in the burn down oven the stator is then sandblasted and all lamination and stator teeth are repaired and freed of all sharp edges or areas that could, over time, wear though the insulation and damage the coils causing a premature failure. When the AC electric motor stator is prepped and ready, it goes to our winding department and the new coils are installed according to the EASA winding data card. When all of the coil connections are made and tested, the AC electric motor stator is ready to be dipped in varnish and baked in the oven.

The AC electric motor is then reassembled with new bearings and any lip seals or mechanical seals are also replaced. The motor is then tested at our test panel and all performance data is verified. We then ship and the motor to our customer. If an installation service is required, we schedule a Field Tech to install the AC electric motor at the customer’s site.

 

Precision Electric offers AC electric motor repair and winding quotes.

Please fill free to fill out our Quote Request form or call us @ 877.625.2402.

Quote Request form: https://www.precision-elec.com/request-quotation/

 

 

Fanuc Servo Motor Repair

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One of our more popular services at Precision Electric is Fanuc servo motor repair. Fanuc servo motor repair has  a high demand around the globe, and we have been filling these demands for over 25 years. Precision Electric aims to increase production in the industrial manufacturing world, so our turnaround on repair is significantly high when compared to other repair facilities. Precision Electric also offers emergency service on Fanuc servo motor repair, and we will work around the clock  until your equipment is running.

Fanuc servo motor repair is a high priority in our facility, because most customers using this equipment cannot afford downtime. We use the best testing equipment and replacement parts on Fanuc servo motor repair. By sending your equipment to Precision Electric, you will benefit from longer lasting equipment, technical support as well as an in service warranty. Many of our customers have testified that their Fanuc servo motor repair was so thorough, that the equipment was in better shape after our repair work than when they purchased the equipment new from the manufacturer.

If you are considering to send your Fanuc servo motor to someone for a repair quote, keep Precision Electric in mind. We will quote your Fanuc servo motor repair for free, and if the price doesn’t seem logical, we will return your Fanuc servo motor not repaired, at no charge. Precision Electric technicians are some of the best in the country, with hundreds of years combined experience.

Call Precision Electric today for a free quote on your Fanuc servo motor repair.

Eaton Cutler-Hammer AC Drive Repair

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Eaton Cutler-Hammer AC Drive Repair

Precision Electric is your best source for Eaton Cutler-Hammer ac drive repair, because we have extensive knowledge on Eaton Cutler-Hammer ac drive repair. We have been servicing ac and dc drives as well as PLC modules, servo motors, servo drives and other related equipment in the  manufacturing world for over 25 years.

Many customers of ours who are using Sullair air compressors send us their Eaton Cutler-Hammer ac drive repair for several reasons. Precision Electric offers an in service one year warranty on all of our repair work, and we also have the most advanced testing equipment for your Eaton Cutler-Hammer ac drive repair. For a free quote on your Eaton Cutler-Hammer drive repair, call us today.

We have hundreds of years combined experience in the industrial manufacturing repair industry. Sending your Eaton Cutler-Hammer ac drive repair to us will typically result in repair work so extensive, that the Eaton Cutler-Hammer ac drive repair ships back to you in better condition than when purchased new from the factory.

Many Sullair authorized repair centers use Precision Electric for Eaton Cutler-Hammer ac drive repair because of our highly reputable service work and technical support.When calling Precision Electric for an Eaton Cutler-Hammer ac drive repair quote, you will speak to an actual person because we do not believe voice mail is appropriate in the industrial manufacturing repair world. We haven’t ever used voice mail because we know how important production is to our customers.

For more information regarding Eaton Cutler-Hammer ac drive repair, please email or call Precision Electric today.

Repair Variable Speed Drives on Air Compressors

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Precision Electric is your best source to repair variable speed drives on air compressors. We have an extensive background in the repair of variable speed drives on air compressors as well as other industrial equipment.

Precision Electric uses the most advanced testing equipment that is available to repair variable speed drives on air compressors.

Some of our customers are Sullair air compressor repair centers, but they do not repair the variable speed drives on air compressors. Instead they send their variable speed drives from their air compressors to Precision Electric because we not only guarantee a quick turnaround, but we also have extensive technical support and our repair works comes with an in service warranty, too.

Our in service warranty is one of  a kind and is great for customers who want their backup (spare) equipment rebuilt, because the warranty doesn’t actually start until the rebuilt equipment is put into service.

Many of the Sullair repair facilities across the nation have learned that by sending Eaton a repair of variable speed drives on air compressors that Eaton has an extremely slow lead time, and more often than not Eaton ends up returning the variable speed drive not repaired. This isn’t economical for Sullair repair centers, for the air compressor can be repaired in a timely manner as should the variable speed drive.

Precision Electric offers emergency service on the repair of variable speed drives on air compressors and other industrial electrical equipment, because our goal is to increase production and decrease downtime for our customers.

If you’re seeking to repair variable speed drives on air compressors, contact Precision Electric for a free quote. All of the equipment that comes in for repair at Precision Electric is inspected, then quoted to customers at if the quote isn’t economical for the customer, the equipment is returned to customer at no charge.

Lenze AC Tech Price Increase

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Lenze AC Tech announced a price increase a couple weeks ago for nearly all of their drive and servo products except for the SMVector drive lines and newer automation product lines. The Lenze AC Tech price increase will go into effect on May 1, 2012.

Lenze AC Tech stated that the price increase is due to market conditions and significant increases in energy and product material costs (raw materials). We at Precision Electric do not believe the Lenze AC Tech price increase will affect drive sales much, but it may give existing MC Series drive users motivation to convert to Lenze AC Tech SMVector drive line.

The Lenze AC Tech price increase will certainly affect users with existing AC Tech equipment who are not interested in converting over to Lenze AC Tech SMVector drives, or other newer product lines unaffected by the Lenze AC Tech price increase. There are literally thousands of applications out there using the MC Series drives, and in my opinion these applications should be converted over to the Lenze AC Tech SMVector drive line.

Converting the AC Tech MC Series over to Lenze AC Tech SMVector is logical because of the Lenze AC Tech price increase, and for the Lenze AC Tech SMVector drive features. The Lenze AC Tech SMVector is all around a better product than the AC Tech MC Series, and in nearly every horsepower rating, it is all less expensive than the AC Tech MC Series drive.

The Lenze AC Tech price increase will be effective on May 1, 2012 and all quotes Precision Electric has made prior to May 1, 2012 will be adjusted accordingly if need be. To discuss technical data with regard to converting over AC Tech MC Series drives to the Lenze AC Tech SMVector drive, contact Precision Electric today.