1. Drive May Be Bad a Few Obvious Signs
Before you do, see if the machine has any of these "alarms”:
* Sudden machine stops, or frequent jump alarms.
* The motor does not sound right, like shaking or humming.
* Drive LED lights on the red light flashes constantly.
* CNC system on the error, alarm code.
* The motor does not rotate, or rotates with a lurch.
* Drive overheating, or even a burning smell.
Encountered these situations, nine times out of ten is the drive or related components out of the problem. Early detection and early treatment can avoid greater losses.
2. First Look at the Alarm Code
Fanuc drive have alarm display, error will give you a code, visual tell you where wrong.
a. How to check:
* Look at the LED display on the drive, or digital pipe (7-segment code).
* Go to the System Diagnostics menu to see the details of the alarm.
* Check the Fanuc alarm code manual to find the cause.
b. Common alarm codes to give a few examples:
AL-12: Main circuit undervoltage.
AL-30: Abnormal motor speed.
AL-05: Excessive current.
AL-17: Cooling fan failure.
It doesn't matter if you can't read it, we at Songwei can help you decipher these "mysterious-looking” codes and give you some reliable ideas on how to solve them.
3. Use Your Eyes to See if There Is an "Obvious Problem”
Sometimes the problem is just there, and you can see it with your eyes:
* Loose, burnt, oxidized wiring.
* Capacitor bulges, black spots or cracks on the board.
* Moisture, rust and corrosion.
* Thick dust accumulation near the fan, poor heat dissipation.
These physical damages are actually quite common if the device has been running in a harsh environment for a long time.
Of course, remember to disconnect the power before checking, safety first!
4. Get on the Test Bench and Run It for a While
The most accurate diagnostic method is to take the drive to the test bench and run it through.
* Actual power supply and motor load.
* Encoder feedback signal.
* Communication connection with the system.
In this way, we can find those problems that are "invisible to the naked eye”, such as signal interference, unstable current, overload protection activation and so on. After the test, we will issue a detailed report with photos and analysis.
5. Don't Ignore External Factors
Not all failures are caused by the drive itself, often it is the external factors that cause trouble:
* Unstable power supply, bad grounding.
* Motor short circuit, wiring problems.
* Replacement of components after the parameters are not adjusted correctly.
* Workshop electromagnetic interference, affecting the signal transmission.
When encountering this kind of situation, it is recommended to test the drive independently to eliminate the "external interference”.
6. When Should I Call a Repair Professional?
If you can't find out the problem even after a thorough investigation, or if you can't test the drive because of the limited conditions at the site, don't hesitate to send it to a professional.
The situations when it is recommended to send it for repair are:
* Alarm codes appear repeatedly, can't read or clear them.
* Once the power is restored, it jumps to error, and it starts and breaks down again and again.
* There is no spare drive, the equipment is in urgent need of use.
* dismantle and dismantle for fear of repairing the more bad, not worth the loss.
We at Songwei offer **free testing**, quotes after testing, fast repairs, and a warranty to help you minimize downtime losses.
7. Why Choose Songwei?
We are not a small workshop that simply "fixes circuit boards”, we specialize in Fanuc systems, with rich experience and professional equipment:
* We have a dedicated Fanuc test platform, which can simulate the operation of real machines.
* Engineers are familiar with all kinds of Fanuc models and system details.
* New, used and refurbished Fanuc drives are available.
* 100% testing before shipment to ensure the function is OK.
* Support international express delivery, fast delivery, warranty is guaranteed!
Whether you need urgent repair or want to find a long-term cooperation service provider, we can cooperate.
Write in the End
Fanuc servo drive out of the problem is really a headache, but as long as you master some conventional judgment methods, such as looking at the alarm, visual inspection, real machine testing, you can lock the problem faster. Don't just dismantle the machine and rely on guessing, use more tools and find more experience.
Have questions at any time to
find us Songwei, Fanuc drive repair, testing, inspection, one-stop solution.
