1. Don't Ignore the Defects That Can Be Seen by Naked Eyes
Don't underestimate the appearance check, many "mines” can be seen at a glance:
* Is the heat sink broken or deformed?
* The circuit board has no burn marks, capacitor bulges, black solder joints.
* There are no dust, water, corrosion or rust spots on the fan opening or vents.
Some surface problems are actually signals of internal damage. If a drive is all miserable in appearance, be especially careful.
2. Power-On Test: See if It Turns on or Not
Appearance is fine, the next step is to power it on. We'll hook the drive up to the
Fanuc test bench:
* See if it can start normally.
* Is there any error report, such as ALM alarm light, ERR red light, SV error.
* Indicator light is normally lit or not, the display is normal or not (some models have a screen).
If you can't turn on the machine, it basically means that there is a serious problem inside, and you can't just install the machine and use it.
3. Communication Detection: Can You Get on with the System
The driver should work well, and the communication with the motherboard and controller must be stable:
* Can it be recognized immediately after connecting to the motherboard or analog system.
* Parameters can be read, written and saved normally.
* Whether the model and software version match the current system.
If the communication does not work, it is useless to install it, which may cause alarm or burn the equipment.
4. Connect the Encoder Test: There Is a Response Is Called Servo
The most core ability of the driver is to control the servo motor. We will connect a Fanuc encoder motor to test:
* Can recognize the encoder feedback.
* Motion command response is smooth, there is no jitter or delay.
* Whether there is "clattering”, jumping, or not following hands during operation.
Once these problems occur, it means that there may be a problem with the feedback link and the machine is not suitable for installation and use.
5. Overheating & Alarm Simulation Test: Simulate the Field Situation to Be Real
A lot of drives are fine at the beginning, but when they get hot, they will alarm or even shut down automatically. We will do temperature rise and limit test:
* Continuous operation 24 hours to see the temperature performance.
* Intentionally disconnect the fan signal, simulate the scene cooling abnormalities, test the alarm response.
* Unplug the encoder signal to see if the system has a quick alarm response.
All of these are to restore the equipment to the field state of use, to ensure that you get a stable drive "can be on the machine”.
Why Choose Songwei's Used Fanuc Amplifier?
We do not simply "dismantle the machine for resale”, but complete testing and professional screening before delivery.
* All equipment is tested on the machine and passed before selling.
* Full test reports are available upon request.
* Provide technical support, warranty service, unsatisfied with the return.
If you are looking to save on your maintenance budget, or if your machine is too old to buy new parts, you can count on us.
To Summarize: Used Can Be Used with Peace of Mind
Buying a used amplifier isn't scary, what's scary is the lack of testing and guarantee. As long as the testing is in place and the source is reliable, used parts can be used stably for years.
If you are looking for a Fanuc model, or would like to see our testing process, please feel free to
contact Songwei. Don't let a drive slow down the whole production line, we help you to prevent the risk before the installation.
