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Functions and Parameters
12.2.9 Stall Overvoltage Prevention
This function is used to automatically adjust the deceleration process to prevent
over voltage error.
Code
Name
Stall overvoltage hyste-
C0.24
resis voltage
Stall overvoltage preven-
C0.26
tion level
Enable the function by setting [C0.25] =1 or 3.
With this function, the frequency converter detects the DC-bus voltage and com-
pare it with [C0.26] during deceleration:
[DC-bus voltage] > [C0.26]: Output frequency stops decreasing
●
[DC-bus voltage] < [C0.26] - [C0.24]: Output frequency resumes decreasing
●
The typical behavior of stall overvoltage prevention is shown as the figure below:
Fig. 12-15: Stall overvoltage prevention during deceleration
Enable stall overvoltage prevention function may cause the actual
deceleration time is longer than expected. If the deceleration time
needs to be accurate only resistor braking should be used.
Bosch Rexroth AG R912005854_Edition 09
Rexroth Frequency Converter EFC x610
Setting range
1P 200 VAC: 30
0...100 V
3P 200 VAC: 30
3P 380 VAC: 50
1P 200 VAC:
300...390 V
3P 200 VAC:
300...390 V
3P 380 VAC:
600...785 V
Default
Unit
V
385
V
770
Series
Step
Attri.
1
Stop
1
Stop
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