Mains failure monitoring: With 230V and 480V mains, the clamps for 400V mains are incorrectly effective (corrected from V01.04.01)
Corrected from:
Servo Inverter i950 FW: from V01.04.01.1471
Response of the new version: All network classes (0x2540) can now be used without restrictions for power failure monitoring.
What happens? Power failure monitoring: The nominal DC link voltage is used to detect a power failure. For the mains classes 230V and 480V, with reduced undervoltage threshold (0x2540:1 = 10 and 0x2540:1 = 12), the nominal DC link voltage is incorrectly used for the 400V mains class. As a result, the power failure monitoring does not function correctly.
When does the behaviour occur? Use of the power failure monitoring and
Setting the network classes "230 Veff/reduced LU level [10]" or "480 Veff/reduced LU level [12]" (0x2540:1 = 10 or 0x2540:1 = 12).
Which products are affected:
Servo-Inverter i950 FW
Short-term measures/ Evaluation/ Recommendations: Use the network classes without reduced LU threshold (0x2540:1=0 and 0x2540:1=2).
