Beckhoff Servo Drive Error Diagnosis

Auteur avatarGareth Green | Dernière modification 4/12/2019 par Gareth Green en cours de rédaction

Drive Errors vs Axis Errors

There is a distinct difference between a Drive Error and an Axis Error. The drive will store a history of drive errors internally in the drive itself. Axis errors are reported on the error watch window in system manager

Type Description Link to Beckhoff Infosys
Drive Errors Errors that occur inside the drive electronics, eg
  • power overloads,
  • voltage low,
  • wiring issues
Beckhoff Drive Error Codes
Axis Errors Errors due to the positional control of the axis, eg
  • Move beyond limits
  • Speed too fast
  • Following Error
Beckhoff Axis Error Codes

Beckhoff Encoder Error Codes

TwinCAT2 vs TwinCAT3

Both TC2 and TC3 have the same system manager, but getting to the system manager uses a different program

Type Program Used Icon ScreenShot
TC2 TwinCAT2 System Manager
Beckhoff Servo Drive Error Diagnosis Image.png
TC2 System Manager Screenshot.png
TC3 Visual Studio
TC3 Visual Studio Icon.png
TC3 Project Screenshot.png

TC3 puts the system manage inside a TwinCAT3 "Project" which also includes the PLC code

Connecting to the Correct Project

See Loading TwinCAT Projects

Drive Errors: Navigate to the Drive Manger Diagnostics

...This part is the same on both TC2 and TC3
TC3 Drive Manager Screenshot 1.png


  1. Select the drive you want to diagnose (dbl click)
  2. Click on the drive manager tab
  3. Drives come in 2 variants - Single or Dual. Dual drives have a channel A and B, you should be able to tell from the drive naming which axis is which
  4. Click on Error History to view all the stored errors
  5. The time of the error is quoted in hours from when the drive was first energised. To work out how long ago the error was, you need to subtract this from:-
  6. The drive operating time

Axis Errors: The Error List or Watch Window

...This only shows errors from after the app is opened, not historical errors, so System Manager needs to run in the background to capture the error


TC2

Axis errors are reported at the bottom of the screen. if this window is not available, use View->Show Logger Output


TC2 System Manager 2.png


TC3

Axis errors are reported at the bottom of the screen. if this window is not available, use View->Error List

TC3 System Manager Error List.png


Common Errors, Meanings and Actions

Drive Errors
Error Code Error Name Possible Root Causes Action
Peripheral Voltage Low

Control Voltage Error: Undervoltage

The 24v supply to the drives is too low. Adjust it to be at least 24v
Peripheral Voltage Check.png
DC Link Undervoltage

Mains Supply: Power Down

Mains missing - could be overload relay trip or a phase missing Reset Trip, check voltages
Mains Supply U main too high /low Mains is outside of the normal +/-10 voltage range (360-440v)

You can safely change this on the Power Management parameters U+mg and U-mg to 15% to give a broader range with no ill effect

Power Management Drive Manager.png

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