CDE360 Vector Control AC Drive Chapter 6 Parameters Description
Group E9: Power Loss Ride Through
Upon power loss ride through or sudden voltage dip, the DC bus voltage of the AC drive
reduces. This function enables the AC drive to compensate the DC bus voltage reduction with the
load feedback energy by reducing the output frequency so as to keep the AC drive running
continuously.
Upon power loss ride through or sudden voltage dip, the AC drive decelerates. Once the bus
voltage resumes to normal, the AC drive accelerates to the set frequency. If the bus voltage remains
normal for the time exceeding the value set in E9.03, it is considered that the bus voltage resumes
to normal.
E9.00
Range: 0~1
Default: 0
Action selection at
power loss ride through
0: Disabled
1: Enabled
E9.01
Range: 40.0~150.0
Default: 80.0
Action judging voltage at
power loss ride through
Unit: %
The AC drive begins to decelerate when the DC bus voltage
is lower than E9.01.This is a relative value, and the base
value is shown in the following table.
Table 6- 16 The base value of E9.01 under different input voltage level
Input voltage level
Base value
Input voltage level
Base value
Single-phase 220V
311V
Three-phase 480V
670V
Three-phase 220V
311V
Three-phase 690V
975V
Three-phase 380V
537V
Three-phase 1140V
1600V
E9.02
Range: 60.0~150.0
Default: 100.0
Action pause judging voltage
at power loss ride through
Unit: %
See the description of Figure below.
E9.03
Range: 0.00~50.00
Default: 0.50
Voltage rally judging time at
power loss ride through
Unit: Sec
See the description of Figure below.
E9.01
E9.02
E9.03
Power grid
Power off
Bus voltage
Output
frequency
Time
Figure 6- 50 Power loss ride through diagram(E9.00 = 1)
