User Manual of EM760 High-Performance Inverter F07.06=0X: Invalid The overvoltage stall is invalid. It is recommended not to set it to 0 in the case of no external braking unit. The undervoltage stall is also invalid. When the value in the ones place is 1 or 2, F07.30 is the reference deceleration time. F07.06=1X: Valid overvoltage stall When the overvoltage stall is valid, the stall control voltage is dependent on F07.07. The DC bus overvoltage is usually caused by deceleration. Due to the energy feedback during deceleration, the DC bus voltage will rise.
When the DC bus voltage is greater than the overvoltage threshold and the overvoltage stall is valid (F07.06=1X), the deceleration of the inverter will be suspended, the output frequency will remain unchanged, and the energy feedback will be stopped until the DC bus voltage is normal. Then the inverter will restart deceleration. The process of overvoltage stall protection in deceleration is shown in Fig. 6-39. Fig. 6-39 Schematic Diagram of Overvoltage Stall Protection 194 0: Invalid 1:
valid F07.07 Voltage of overvoltage stall control 110.0~150.0 (380V,100.0=537V) % 134.1(720V) O Function code Function codename Parameter description Unit Default setting Attribute F07.08 Instantaneous stop/no-stop operating voltage 60.0 ~ Instantaneous stop/no-stop recovery voltage (100.0= standard bus voltage) 76.0 O F07.09 Instantaneous stop/no-stop recovery voltage Instantaneous stop/no-stop operating voltage to 100.0 % 86.0 ● F07.10 Check time for instantaneous stop/no-stop recovery voltage 0.00~100.00 s 0.5 ● F07.30 Instantaneous stop/no-stop deceleration time 0.00~300.00 s 20.00 O