Unsuitable combination of motor and power unit

What does A01669 mean?

The combination of the motor and power unit is unsuitable, specifically if the ratio between the rated power unit current (r0207[0]) and rated motor current (p0305) is not greater than 5. This mismatch can lead to sporadic C01711 or C30711 messages and suboptimal performance or even damage over time.

• Motor rated current (p0305) is significantly higher than the power unit's rated current (r0207[0]), violating the required ratio.
• Power unit selected is undersized for the connected motor's continuous current requirements.
• Incorrect motor data entry for p0305 during drive commissioning, leading to a calculated mismatch.
• Drive firmware or configuration expects a different motor/power unit scaling than what is physically installed.

Click steps to track your progress.

1. 1

   1. Verify the rated current of the connected motor from its nameplate and compare it to the value in parameter p0305.

2. 2

   2. Cross-reference the power unit's rated output current (r0207[0]) with its specifications sheet.

3. 3

   3. Recalculate the ratio (r0207[0] / p0305) and confirm it meets the minimum requirement of 5.

4. 4

   4. If the ratio is below 5, select a motor with a lower rated current (p0305) or a power unit with a higher rated output current (r0207[0]) to ensure compatibility.

5. 5

   5. Check for any unintended scaling factors or unit discrepancies in parameters related to current ratings.