Delta AL521 fault code meaning
Delta / AL521
Series: ASDA-A3, ASDA-B3, ASDA-E3, ASDA-E3C-E, ASDA-H3
Flexibility compensation parameter error
servo drive
Meaning: The servo determines that the entered flexibility compensation parameter values are unreasonable.
Possible causes
- Condition: The servo determines that the entered flexibility compensation parameter values are unreasonable. Cause:
- The flexibility compensation parameter values entered manually by the user are invalid.
- Other factors cause errors in the Bode plot when using the "System Analysis" tool.
Source: ASDA-A3 User Manual (DELTA_IA-ASD_ASDA-A3_UM_SC_20230515) P1195; ASDA-B3 User Manual (DELTA_IA-ASD_ASDA-B3_UM_SC_20250108) P919; ASDA-E3 (DELTA_IA-ASD_ASDA-E3_UM_SC_20260313) P643; ASDA-E3C-E Application Technical Manual (DELTA_IA-ASD_ASDA-E3C-E_UM_SC_20260612) P566; ASDA-H3 User Manual (DELTA_IA-ASD_ASDA-H3_UM_SC_20260428) P811
Series: ASDA-W3
Flexibility compensation parameter error
servo drive
Meaning: The servo determines that the entered flexibility compensation parameter values are invalid. 1.When P2.094 [Bit 8] = 1, the values are invalid if P1.089 ≥ P1.090. 2.When P2.094 [Bit 9] = 1, the values are invalid if P1.092 ≥ P1.093. 3.The correct motor parameters have not been loaded (for example: PM.034 = 0).
Possible causes
- Condition: The servo determines that the entered flexibility compensation parameter values are invalid.
- When P2.094 [Bit 8] = 1, the values are invalid if P1.089 ≥ P1.090.
- When P2.094 [Bit 9] = 1, the values are invalid if P1.092 ≥ P1.093.
- The correct motor parameters have not been loaded (for example: PM.034 = 0). Cause:
- The flexibility compensation parameter values entered manually by the user are invalid.
- When using the ASDA-Soft “System Analysis” tool, other variables cause errors in the Bode plot, resulting in incorrect automatically populated values for P1.089, P1.090, P1.092, and P1.093.
Source: ASDA-W3 Series Servo System Application Technical Manual (DELTA_IA-ASD_ASDA-W3_UM_SC_20251226) P773