Danfoss VFD500 Series Manual page 51

Chapter 5 Function code
Function Parameter name
code
P01.40 UP/DOWN Control
P01.41 Droop control gains
Droop control filtering
P01.42
When several motors drive the same load, each motor's load is different because of the difference of
motor's rated speed. The load of different motors can be balanced through droop control function which
makes the speed droop along with load increase.
When the motor outputs rated torque, actual frequency drop is equal to P1.41. User can adjust this
parameter from small to big gradually during commissioning.
P01.43 Textile frequency setting
P01.44 Textile frequency
P01.45 Jump frequency
P01.46 Textile period
Triangle wave rising time
P01.47
coeffcient
VFD500 high performance vector control frequency inverter user manual
Unit'digit：
0：Zero clearing in non-running
1：Zero clearning when UP/DOWN command
not effective
2：Not zero cleaning (decide by remembering
digit when power failure
Ten's digit：
0：Non-zero cleaning at power failure
1:Save at power failure UP/DOWN offset
Hundred's digit: UP/DOWN near to zero
0: Forbidden
1:Enable
Thousand's digit up and down action mode
0:Superposition
1:Gain effect
0.00～1.00
Rotation speed drop value based on Rated
load（relative to maximum frequency）
Frequency drop volume:Max
frequency*P01.41*Current load/rated load
0.000s～10.000s
time
0: relative to center of textile frequency
1: relative to maximum frequency
0.0%～100% relative to center of textile
frequency P01.43 = 0Textile frequency Aw =
P01.44 * center frequency
P01.43 = 1: Textile frequency Aw = P01.44 *
max frequency
0.0%～50.0% relative to textile frequency
0.1s～3000.0s
0.1%～100.0% relative to textile period
Description
48
Default Property
★
0002
☆
0.00
☆
0.050s
☆
0
☆
0.0%
☆
0.0%
☆
10.0s
50.0% ☆