User Manual of EM730 Series Inverter Fig. 7-23 Schematic Diagram of Overvoltage Stall Protection When the bus voltage is lower than the instantaneous stop/non-stop action voltage (F07.08), the inverter will be in the power-down status. When the bus voltage is higher than the instantaneous stop/non-stop recovery voltage (F07.09), and the judgment time (F07.10) for the instantaneous stop/non-stop recovery voltage is up, the inverter will recover normal operation. When the ones place of the instantaneous stop/non-stop option of F07.06 bus voltage control is set to “1: Slow down”, as shown in Fig. 7-24:
When the bus voltage is lower than the instantaneous stop/non-stop action voltage (F07.08), the inverter will slow down at the speed set based on the decleration time for the instantaneous stop/non-stop action (F07.30).
When the bus 221 Function code Function code name Parameter description Unit Default setting Attribute Mailing address F07.08 Instantaneous stop/no-stop operating voltage 60.0 to instantaneous stop/no-stop recovery voltage (100.0 = standard bus voltage) 76.0 〇 0x0708 F07.09 Instantaneous stop/no-stop recovery voltage Instantaneous stop/no-stop operating voltage to 100.0 % 86.0 ● 0x0709 F07.10 Check time for instantaneous stop/no-stop recovery voltage 0.00 ~100.00 s 0.5 ● 0x070A F07.30 Instantaneous stop/no-stop deceleration time 0.00 ~ 300.00 s 20.00 〇 0x071E