User`s guide

99
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter
Unit
Description / Notes
P151
325 to 410
DC Link Voltage
(line 200-240 V)
RegulationLevel
[ 380 V ]
1 V
564 to 820
(line 380-480 V)
[ 780 V ]
1 V
The DC link voltage regulation
(
ramp
holding)
avoids
overvoltage trips
(E01)
during decelerationof high inertia
loads and/or short deceleration times.
It acts in order to increase the deceleration time
(according to load - inertia), thus avoiding the E01
activation.
Figure 6.11
- Adjustable V/F curve
OutputVoltage
Output
Frequency
P145
0.1 Hz
0
P142
E01- Overvoltage
CI Limitation
Cl Voltage
Ud (P004)
Time
Output
Frequency
(Motor Speed)
Rated Ud
P151
Time
Figure 6.12
- Deceleration curve with DC Link voltage limitation
(regulation)
DC Link
Voltage
By this function an optimized deceleration time
(minimum) is achieved for the driven load.
This functionis useful in applications with medium inertia
that require short deceleration times.
Incase of overvoltage trip(E01) during thedecelearation,
you mustreduce graduallythe value of P151 or increase
the time of the deceleration ramp (P101 and/or P103).
The motor will not stop if the line is permanently with
overvoltage (U
d
> P151). In this case, reduce the line
voltage or increase the value of P151.