Kaeser Sd Card Write Error

To resolve a "SD card write error" on a Kaeser Sigma Control 2 controller, typically indicated by warning code 0300 W , you should first check if the physical write-protection switch on the side of the SD card is activated  . If the switch is in the "Lock" position, the controller cannot save operational data or parameters to the card . Troubleshooting Steps Deactivate Write Protection : Remove the SD card from slot X5 and ensure the sliding lock tab is moved to the "unlocked" position . Verify File System : Ensure the SD card is formatted to FAT32 and has at least 50 MB of free memory . Note: It is recommended to use an official Kaeser pre-formatted SD card to ensure compatibility with the industrial PC inside the controller . Replace Defective Card : If the error persists after unlocking and formatting, the memory card may be defective and requires replacement with a new one . Proper Ejection : Always use the "Eject SD card" function in the 5.11 menu before physically removing the card to prevent file corruption . Card Requirements & Location Slot Location : The SD card slot is labeled X5 on the Sigma Control 2 unit . Access Level : You must have Password Access Level 2 or higher activated to manage SD card data settings . Purpose : The SD card is used for software updates, system backups, and long-term storage of key operational parameters . User Manual - Air Solutions Canada Password access level 2 is activated. 1. Select the 5.11 menu. 2. Use «Up» or «Down» to select the Language: 3. Press «Enter». Air Solutions Canada User Manual - Air Solutions Canada

SD card write error (typically message code ) on Kaeser compressors equipped with the Sigma Control 2 indicates the controller cannot save operational data, logs, or parameters to the inserted memory card . While this is usually a warning that does not shut down the machine, it prevents critical functions like software updates and long-term data tracking Common Causes & Solutions Physical Write Protection : The most frequent cause is the small sliding lock switch on the side of the SD card being in the "Lock" position : Remove the card, slide the switch to the position, and reinsert it Defective or Corrupted Card : Industrial environments can cause physical wear or file system corruption (turning the card "RAW") : Test the card in a PC. If unreadable, format the SD card (FAT32 is standard) or replace it with a new one Full Memory or Directory : The system has a limit on files (e.g., 999 Data Logs). If the volume is full, new files cannot be created : Delete old log files or replace the card with an empty one Connection Issues : Dust or vibration can cause poor contact between the card and the slot : Remove and reinsert the card. Ensure the Sigma Control 2 slot is clean How to Clear the Error on Sigma Control 2 If the physical issue is resolved but the warning persists: How to Fix "SD Card can't read/write" Error?

Here’s a technical write-up for a Kaeser SD card write error , including possible causes and troubleshooting steps. This is suitable for a service log, knowledge base article, or internal training document.

Write-Up: Kaeser Controller SD Card Write Error Equipment Affected kaeser sd card write error

Kaeser Sigma Air Manager (SAM) 4.0 / 5.0 Kaeser Sigma Control 2 (SFC 2) Other Kaeser controllers using SD card for data logging or firmware

Error Description The controller displays an error message related to SD card write failure, such as:

SD Card Write Error Write protect SD card SD card full or defective To resolve a "SD card write error" on

The controller may continue to run but data logging stops, and alarms may persist after power cycles. Possible Causes

SD card full – No free space for new logs or events. File system corruption – Improper shutdown or card removal. Write-protect switch enabled – Physical lock tab on SD card. Faulty SD card – Worn out or incompatible brand/size. Controller write cycle limit – Excessive logging wears out flash memory. Firmware bug – Rare but possible in older controller versions.

Immediate Troubleshooting Steps | Step | Action | |------|--------| | 1 | Power down controller safely using the main disconnect. | | 2 | Remove SD card and check physical write-protect switch on card side. | | 3 | Inspect card for damage, dirt, or bent pins in controller slot. | | 4 | Insert card into PC (using adapter). Check free space. | | 5 | Back up any readable logs, then reformat card as FAT32 (not exFAT/NTFS). | | 6 | If reformat fails, replace SD card with new ≤32GB (class 10 recommended). | Advanced Recovery (If Needed) Verify File System : Ensure the SD card

Use disk repair tool ( chkdsk /f on Windows) before reformatting. If controller still shows error, try blank SD card with no files – controller may auto-create folders. For persistent errors, perform controller firmware update (Kaeser service required).

Preventive Measures