Your Industrial Touch Screen Questions and Problems Solved

Get Fast & Accurate Quotes for Idustrial Touch Screen & Monitor RepairIs your industrial touch screen monitor misbehaving?   Flickering? Not responding?  Most resistive touch screens are designed to last for more than 35 million touches in one spot before failing, as much as 4 times longer lasting than the display.  That sounds like a helluva lot of touches but that depends on the application.  For example, a touch screen used in a popular national-chain pizza delivery shop could get 35 million touches very quickly.

When problems do arise with industrial touch screens before it becomes aged, it is often due to misuse or an accident.  A good industrial touch screen should not require calibration for quite a long time, unless it is getting banged around in your shop, which, unfortunately, is not a rare occurrence.

If you find that you do need industrial touch screen repairs check your warranty date.  If it is still under warranty, your manufacturer should provide the needed repairs.

If it is out of warranty, or even obsolete, you can still usually get it repaired by choosing a third-party industrial electronic repair firm.  An excellent repair firm will, at a minimum, first evaluate the unit and prepare a quote for repairs at no cost; then replace all faulty or non-operational components, evaluate and replace all high-failure-rate components including electrolytic capacitors, ICs and integrated flyback transformer if necessary; thoroughly clean the entire monitor; complete a 24-hour test and provide a warranty on both parts and labor for the entire monitor.

Of course, choosing the best technology for your application in the first place will help assure that your touch screen performs as expected and does not fail.

Just some of the things to consider when choosing  an industrial touch screen include:  response time, sensitivity, immunity to unintentional touch, calibration stability, accuracy, input flexibility (finger/glove/stylus), resolution, light transmission, sunlight readable displays, antiglare, immunity to surrounding electric or magnetic fields, emissions, sealability, breakage resistance, environmental resistance (temperature & humidity), shock and vibration absorption.

What You Should Know About Used or Shelved Industrial Electronic Equipment and How to Evaluate

Get Free & Accurate Quotes for Expert Industrial Electronic RepairsBuying used industrial electronic equipment or reusing shelved or mothballed equipment can indeed save a lot of money, BUT it can also result in some costly problems.

When you buy used you can end up buying someone else’s problems and if you dig out your own mothballed machinery, you can only hope that it was put away and marked properly.

No matter what size plant you operate, you can employ Predictive Maintenance technologies to evaluate the operating condition of used or mothballed equipment. You probably already do this on some level, only you didn’t call it anything fancy. You still don’t have to call it anything fancy, but applying some fundamental tests and organization to the process can help make it more effective thus saving time and money, and isn’t that what we all want to do?

The only way to 100% determine the operating condition of used equipment is to test it under load, under normal operating conditions. However, this is often just not possible. Other useful evaluation tests you can perform include:

  1. Start with simple low/no cost tests such as rotating a shaft to see if the bearings and components are damaged, bent or corroded. Purge grease fittings to check the lubricant. These simple tests can quickly show serious potential problems.
  2. Temporarily install the unit in a test fixture such as a dynamometer with accurate diagnostics such as real time vibration analysis; a bit more costly but very useful.
  3. Vibration analysis can quickly detect unbalance, misalignment, bent shafts, resonance, bearing failures, gear mesh problems, motor problems and much more. Well worth the effort.
  4. Infrared thermography tests the temperatures in the unit to detect areas that are hotter or colder than they should be such as what you might find in switch gear, gearboxes, circuit breaker panels, and motor
  5. Tribology and oil analysis compares chemicals and physicals of the oil against clean virgin oil to see if the oil is still adequate
  6. Ultrasound analysis tests for quite a number of things including detecting electrical arching and corona discharge.

These are a sample of Predictive Maintenance technologies from the basic to the complex, and there are yet still more options. Schedule when you will test your equipment and document the results for each piece, including the cost avoidance figures which management will want to see – you will be glad you invested the time and effort when you realize long-term savings and prevention of disastrous failures.

If you are considering mothballing your industrial equipment but aren’t entirely sure how, take a look at this article I saw on Industrial Equipment News.com as well as others you can find on that site.

Consult an expert in industrial electronic repair if you want to have your equipment evaluated by a professional or you need such services as plc repairs, touch screen monitor repairs, servo motor repairs or other repairs. Using the services of a professional industrial electronic repair shop provides you with a warranty even on an older, used piece of equipment which can be invaluable.

Tips for Servo Motor Repair and Troubleshooting

motor repairs magicAwhile back, in the best interests of your valuable servo motors, I wrote “Four Easy Ways to Keep Your Motor Up and Running”.   Hopefully, since then your equipment has been humming along in perfect working order.

But maybe things haven’t gone so well and maybe you didn’t keep that motor up and running and now it’s failed?  Worse yet, maybe it’s now out of warranty.

So what’s the good news in all of this?   The good news is, you DO have options.  Most servo motors are well worth repairing, even older obsolete models.

Want to know more about trouble shooting your servo motor before seeking repairs?  Being electronically inquisitive myself, if I were in your shoes, I might want to try to figure out what’s up with my servo motor before shipping it off for repairs.  I say might….but realistically?  I’m just too darn busy to mess with it.  (Tip to the wise:  testing your motor is fine but RESIST the urge to take it apart!)

However, for those of you determined to perform some DIY motor testing, here are some tips:

  1. Check the ground resistance between the motor body and the motor terminals.  This should be approximately 100 ohms or above.  Use a multimeter  to test  this.
  2. Find the winding resistance by connecting between the terminals.  This should be about 200 ohms.  Larger motors could have a lower ohm value.  Likewise, smaller
    motors could have an ohm value of about 100.  You can check with tech support at the manufacturer of the motor for the resistance specifications on your model.
  3. Check the motor at the winding terminals rather than the cable end because the wire in the cable could be corroded or broken.
  4. Disconnect the conductors from the drive control end and meg between cables and each cable to ground.  The megohmeter uses much higher voltages (usually 500VDC or 1000VDC) to check resistance.  Between the cables, it should give nearly the same value.  It should be 1-3 ohms for medium rated motors, higher for smaller motors.  Between each connector and ground, the megger value should be relatively high, about 1000 ohms or higher.  Your manufacturer can give you more specific values.
  5. Still not sure what’s going on?  Go back to the motor and disconnect the cable which isolates the motor.  Recheck the terminals which will tell you whether the problem is with the cable or with the motor.
  6. Let me repeat:  Do NOT take your motor apart if you are not trained/experienced in servo motor repairs; doing so may make repairs more difficult or impossible and the cost of the repairs higher.

If you’ve already got too much work on your plate to get into troubleshooting, just ship your damaged motor off to the best “motor repair magicians” you can find.   These specialized techs may seem like magicians, but what they really are is persistent, experienced, and precision-oriented AND they have the best test and repair equipment available.  How many times did I hear my Dad say “have the right tool for the right job” and boy was he was right!   No cheap chumping on test equipment in the repair shop!

The best servo motor repair shops will offer a free, no-obligation evaluations and quotes and a minimum of a one-year warranty on both parts and labor.

The repair shop should provide in-depth initial back drive testing and critical alignment verification before disassembly, testing of the stator windings at full voltage and current, and verify breakdown conditions under “real life” full load conditions.   They should record test data including winding waveforms, feedback signals, reverse generated voltage readings, shaft and encoder alignment data.

Check to see if they test the magnet assemblies for proper torque output. If the magnets test bad or are broken, they should be re-magnetized or replaced.  Also, find out if they offer machining services to re-machine sleeve endbells, shafts, and motor housings as needed.

 

About the Author:  ACS Industrial Services is an independent industrial electronic repair center providing repair services for printed circuit boards, drives, servo motors (most brands repaired including Mitsubishi, Allen Bradley, Toyo Denki, Yaskawa, Kollmorgen, Mori Seiki, Okuma, Baldor), encoders, monitors and touchscreens, PLCs, test equipment, light curtains, and much more, even for obsolete  equipment.  Evaluations and quotes are free with no obligation.  Our customer service team is available to answer your questions and help solve your industrial electronic repair concerns. You can reach them by calling 800-605-6419 or going to www.acsindustrial.com .