If the controller cannot write data because the card is full, it will trigger a top-level write error. View the files on your computer.
This is the easiest potential fix. Remove the SD card from the controller and look at its left side. You should see a small, sliding "Lock" switch.
If the error remains after replacing the card, the issue might lie with the SIGMA CONTROL 2 controller card reader itself.
Back up any accessible .DAT or diagnostic configuration files. Open your system's disk utility tool. kaeser sd card write error top
Never remove the SD card while the Sigma Control 2 controller is powered on or actively running a cycle.
: Ensuring settings are retained if the controller needs replacement or a factory reset. Kaeser Compressors for a new card or help finding a local Kaeser service provider for hardware repairs? User Manual - Air Solutions Canada
Resolving this error requires diagnosing whether the issue stems from hardware degradation, formatting conflicts, or mechanical locks. 1. The Write-Protect Switch is Engaged If the controller cannot write data because the
Never pull the SD card out while the controller is fully operational without checking the manual state, as this can permanently corrupt the firmware.
The most common cause of a write error is a displaced physical lock.
: The controller requires a minimum of 50 MB of free memory to save operational parameters and data logs. Remove the SD card from the controller and
Industrial controllers undergo continuous data writing. Over years of thermal cycling and high-frequency data logging, the flash memory cells on the SD card wear out, leading to read/write operational failures.
Prevention is always better than troubleshooting. These best practices will keep your system reliable: