Anlg Cal Chksum

What does 108 mean?

The checksum read from the analog calibration data does not match the calculated checksum, indicating corruption of critical analog input/output calibration data. This issue leads to inaccurate sensor readings or control outputs, severely impacting drive performance, accuracy, and potentially safety. Resolution typically requires hardware replacement.

• Corruption of analog calibration data in non-volatile memory due to power fluctuations or electromagnetic interference (EMI).
• Internal hardware fault on the main control board affecting the analog-to-digital (ADC) or digital-to-analog (DAC) calibration memory.
• Unsuccessful or interrupted firmware update that impacts the storage or structure of calibration data.
• Environmental stress (e.g., extreme temperature, high humidity) causing memory degradation over time.
• Incorrect manual adjustment of calibration parameters leading to a checksum failure upon save.

Click steps to track your progress.

1. 1

   1. Perform a factory reset of all drive parameters (e.g., P0-01 to "Factory Reset") to clear any corrupted calibration data.

2. 2

   2. If available, use the drive's built-in analog input/output calibration routine (refer to specific drive manual for relevant P2-xx or P3-xx parameters).

3. 3

   3. Manually recalibrate analog inputs (e.g., AI1 at terminals TB1-1, TB1-2) using a known precise source (e.g., 0-10VDC or 4-20mA) and verify readings in corresponding parameters.

4. 4

   4. Verify stable control power supply (e.g., 24VDC) to the main control board, ensuring it meets specified voltage tolerance.

5. 5

   5. If the fault persists after attempts to recalibrate, the main control board (MCB) is likely defective and requires replacement.