User Manual of A90 Series Inverter
183
motor temperature drops to be far below the protection threshold.
Function
code
Function code
name
Parameter description
Unit
Default
setting
Attribute
F07.06
Bus voltage control
options
Ones place: Instantaneous
stop/no-stop function options
0: Invalid
1: deceleration
2: deceleration to stop
Tens place: Overvoltage stall
function options
0: Invalid
1: valid
10
○
F07.07
Voltage of
overvoltage stall
control
110.0 - 150.0 (380V,
100.0=537V)
%
131.0
(703V)
○
F07.08
Instantaneous
stop/no-stop
operating voltage
60.0 to instantaneous
stop/no-stop recovery voltage
(100.0 = standard bus
voltage)
76.0
○
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.
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=2/3), 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. 7-23.
