28 September 2021
Measured Mains Voltage does not match the Mains Voltage readings of HMI on ATV61/71Product line:
Altivar ATV61 and ATV71Environment:
All models, all serial numbersCause:
Flat topping on the input AC waveform. Resolution:
The HMI's Mains Voltage reading is a calculation of the Mains Voltage, by reading the DC bus. It is calculated by taking the DC bus value and dividing it by the square root of 2.