Ser Vo Motor Stopped When Running Goes in Fault Reset Run for a Bit and Fail Again Encoder Error

Servo Motor and Bulldoze Troubleshooting Guide

Quick Links:Common Servo Motor Issues | How to Repair Servo Motor Components | Need Aid After Troubleshooting?

A servo motor is a torque-based engine comprised of a rotary actuator or linear actuator. This blazon of motor allows for precise controls adjusting for angular and linear position, torque, velocity and dispatch. Iv components, motor, a bulldoze, controller and feedback unit, comprise mod servo systems.

Servo motors are unremarkably quite small, but they nevertheless pack a lot of power and efficiency which is why a lot of applications use them, namely industrial. You'll find them in industries like robotics, metal cutting and forming, press, woodworking, conveyor chugalug setups and more.

When selecting a servo motor, the inertia load should never exceed ten times its capabilities. Many different types of servo motors and drives be but all are a means to an end. Ultimately, they ability industrial grade equipment and machines and proceed a plant fully operational. But like anything, they can malfunction.

When that happens, information technology can be costly for your company and coiffure. Repairs tin have longer if you don't have an experienced maintenance team, leaving the equipment offline for hours, days, or even weeks.

It'due south always good to accept backup equipment that yous can replace malfunctioning devices with, especially if yous need to transport the affected auto or motor out for repair. Shipping out to set up a problem can besides have an extended flow and exacerbate the downtime of your team or equipment.

Scan through this troubleshooting guide to encounter if you lot can place and gear up the problem before calling in a repair squad or shipping your gear out for repair as it tin can relieve y'all time and money.

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Mutual Problems and Possible Causes: Servo Motor Troubleshooting

Any piece of hardware or equipment volition encounter problems subsequently a while, simply the more mutual problems tin usually be handled if you know how to deal with them. Some of the more common issues will happen regardless of maintenance or upkeep, and may even cause a motor failure in the middle of an operation.

Before y'all begin pulling autonomously the servo to audit components, you'll want to see if in that location's a quick fix. Here'south a cursory listing of issues your team might come up across, and what they can do about them:

Overheating

Believe it or not, most servos are susceptible to estrus, especially when they're running for extended periods of time. While maintenance crews do report a higher call book for overheating during summer months, it can happen even during libation weather.

Servos can overheat for a number of reasons, like the increase of indoor and outdoor temperatures, extended operating times, poor ventilation or even the status of your visitor's equipment. Older machines tend to overheat more often as their internals wearable out.

An overheating servo is never good considering the elevated heat levels can damage your equipment and even ruin other parts of your connected system. Any good servo will have a failsafe, of course, and shut down when the temperature surpasses a dangerous threshold. That doesn't change the fact that it tin cause severe damage to company's equipment and waste matter a lot of your team'due south time.

Ensure your plant is climate-controlled and proceed the temperature inside regulated as much as possible. You don't necessarily demand to keep it freezing within your plant, but you lot do desire to preclude temperatures from climbing too high in general.

Furthermore, never attempt to cool the servo while it's running by opening the cabinet door or placing a fan nearby. This tactic will only put actress article of clothing on the system. Excess grit and dirt can and will seep in, damaging components.

If the overheating equipment is former, have it serviced, and make sure the major components are in proper order. You lot may need to replace a few — or several parts — especially when information technology comes to an older motor.

Finally, always make sure to turn off an overheating system and let it cool off for a decent amount of fourth dimension. If this becomes constant, where the equipment is idle more than it's operational, you may want to consider replacing information technology.

Servo Motor Won't Plough

Every in one case in a while, you might come to discover that your motor just isn't moving. This discovery may seem like bad news since a servo motor has and then many components that it can exist difficult pinpointing the exact trouble. If yous know this quick tip, however, that'due south not the case.

Just cheque the controller's Digital-Analog-Converter output. If yous find a DAC parameter value of 0 or merely shy of information technology, and then that's why the drive is not moving. There'south something wrong with the controller, and yous may need to replace it. But if that number is larger, then the controller is doing what it'south supposed to, and you tin move on.

If the equipment problem is because of the drive, then yous should be able to run a self-test. This test forces the motor to operate at a depression efficiency so that y'all can see whether or not it's working properly. If null happens, then you know the problem is with the drive.

Servo Bulldoze Replacement Parts

Servo Making Aberrant Noises

A servo motor will ever brand a small corporeality of noise, it's natural. Bustling is the most mutual noise a servo bulldoze or motor will produce during normal operation.

That said, it should never be loud to the betoken of being obnoxious. If the servo does make foreign noises, the problem is most likely wrong wiring or electrical issues. Check to make sure the servo is grounded properly and that it's getting the appropriate corporeality of power. Obviously, be sure the servo is off before working on the electrical circuits.

Servo Motor Producing Reduced Torque

Torque is the amount of muscle, energy or power required to rotate and motility a machinery. It comes from three basic sources: friction, external forces like fighting gravity and accelerating a mechanism'south inertia.

Past nature, motors will just put out a certain amount of torque and so that if you choose the wrong one, it may not be able to handle the workload your team needs it to. Sometimes, you may too have a servo motor malfunction, and it will stop producing enough torque. Some of the most popular servos operate between 4.8v and vi.0v which is 130.five oz-in and 152.8 oz-in respectively.

Bated from the motor non having enough ability, hither are another things you lot tin cheque:

• The servo amplifier rating.
• The servo'southward workload limits.
• Low voltage or voltage drops inside the system.
• Bad capacitors.
• Inadequate or improper connections.

You and your team will want to get familiar with how to test servo motor and drive systems considering this can oftentimes happen, especially with older and dated equipment.

Servo Motor Repair Services

Servo Smells Funny or Produces Fume

More than probable, if your servo produces a potent odor, information technology'due south going to be reminiscent of something burning. If yous notice this or encounter smoke of whatsoever kind, it indicates that your arrangement is overheating.

Cheque the cooling organisation or air flow to ensure information technology's not restricted in any way. If your servo is already exposed, ensure that nothing similar dirt or dust particles fabricated its way inside. If neither of these steps help, check to meet if the bearings are in proper lodge. They tin have several issues including too much lubricant, worn bearings and overheating.

Y'all may also encounter the smell of ozone, which indicates burning windings or wiring. If that'southward the case, you need to ensure the wires are contactless and the system is grounded properly.

Servo Motor Shuts Off Afterward Reaching High or Total Speed

If your servo motor starts fine but turns off after reaching a loftier speed, information technology indicates a serious malfunction. This problem may be a lilliputian harder to repair. A few factors may cause your motor to close off, such as:

• Defective overload protection system.
• Rapid overheating.
• Inadequate or improper bearings.
• Blown fuses or onetime ones in need of replacement.
• Bad capacitors.
• RPM meter malfunction or inaccurate readings.
• Voltage drops or poor wiring.

Depending on what you and your squad find, you tin brainstorm repairs on your servo motor or contact a professional to fix your equipment.

How to Repair Servo Motor Components: Fixing the Problem

Once your maintenance crew has identified the problem, you can move on to the bodily repairs. Before you do, have note that most of the bug or indicators are like. Bad capacitors, for example, can be responsible for several issues, and the aforementioned applies to voltage drops or shoddy wiring.

Make certain y'all have the appropriate testing tools and meters before moving on to the next section. As a forewarning, this equipment is more circuitous, then yous will not be able to find it in conventional retail stores.

Troubleshooting and Repairing

Servo drive troubleshooting and servo motor troubleshooting are the lifeblood of identifying and fixing a trouble. The ultimate goal is to work with and sometimes operate the servo to deduce what's going wrong. Luckily, most servo drive and motor systems are attached to an alarm which will sound when something is up.

Warning : Troubleshooting a servo drive tin can be a complex and dangerous procedure. It requires working knowledge of electromechanically controlled motors, actuators and a volt-ohm meter. If any of these components seem foreign to you or your team, outsource assist. While reading up on how to repair servo motor and bulldoze system, you'll want to exist prepared before taking action.

Your servo may be slightly different than what nosotros are describing, withal the following troubleshooting steps should remain the same:

1. Before supplying power to the unit of measurement, inspect the MOSFETs, inputs and outputs, IGBT's relays, feedback circuits, ability supplies and capacitors.
2. Turn on the automobile or principal billow and check the LED or readout display. If in that location is a screen and it does not come on, make sure there is power supplied. If the alarm comes on immediately before anything else powers on, then your problem is probably the servo drive. If the drive begins working earlier the alarm sounds, you tin can rule it out.
3. Inspect the servo drive and motor to identify missing, broken or bent parts.
4. Check the motor or cable plugs. If you notice any irregularities, you lot may demand to replace these components.
5. Review the diagnostic or lead meters to see if in that location's unnecessary friction in the motor axis. Friction is a rare problem, but information technology can happen and normally does when there's besides little — or likewise much — lube.
6. Inspect the motor box coolant or air flow system. Brand sure to clean or remove particles, dry out out any plugs and check all cables.
7. Bank check for a bind in the axis or if the brushes are worn downwardly in the DC motor.
8. Use a volt ohm meter to bank check for an incoming ability supply. Yous'll mainly want to examination the servo drive to ensure the voltage is correct.

Of grade, your maintenance team may run through all these steps and withal have trouble identifying what'southward incorrect. That'south okay.

Look at these questions and see if they fit the problem your equipment is having:

• Does the warning sound, or does the motor accept problems in feed or during rapid movement? There may be a bind.
• Is in that location a loud hum coming from the servo motor? Your motor centrality probable has a bind.
• Is there a loud growl or similar dissonance during high-speed operation? The bearings are bad.
• Does the motor slows downwards or stops abruptly? You might have an electrical problem. Cheque to make certain that coolant didn't seep into the electrical box or 1 of the axes.

In one case you complete a repair or replacement of parts, y'all'll want to exam the servo motor before putting it back into regular operation. You can do this by plugging it into a universal tester, which will provide information on the feedback, phases, rotation, speeds and direction under load. Also, don't subject it to a heavy workload right abroad. Ease it dorsum into performance by starting slow, just to ensure everything is in proper working club.

If you lot need specific repair instructions for the various components, y'all can find a comprehensive guide hither.

Need Help After Troubleshooting?

Fifty-fifty later on the most rigorous troubleshooting and budget regimen yous and your team may still demand assistance getting the servo up and running over again. At this stage, your team may not want to admit that they demand help, simply it's perfectly okay. When you apply a reliable servicing visitor — similar Global Electronic Services — we'll take you back in functioning in no time, and we won't sweep away all your profits to do it.

Global Electronic Services technicians will do everything from inspecting the motor to performing necessary fixes and painting the station. Before shipping annihilation back, the quality control team will cheque and audit the components to ensure that everything is functional.

We offer you consummate servo motor and repair assistance and we operate with a qualified team of OEM-trained servo technicians. Every tech follows a strict set of procedures when repairing servo motors and drives, which ensures that they can fix any damage or problem without creating more. Call u.s.a. today!

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Source: https://gesrepair.com/servo-motor-drive-troubleshooting-guide/