Danfoss VFD500 Series Manual page 92

VFD500 high performance vector control frequency inverter user manual
Left: Motor overload protection starting current
Motor overload only protects the motor from overload when P24.04 is enabled.P24.00 is used to adjust the
overload inverse time curve time, as shown in the right figure above, the minimum motor overload time is 5.0s.
Note: Users need to correctly set the three parameters of P24.00, P24.01 and P24.02 according to the actual
overload capacity of the motor. If set unreasonable, prone to motor overheating damage and the inverter is not
timely warning of the danger of protection.
Motor overload warning
P24.03
factor
P24.04 Motor protection option
Motor in self cooling mode, heat
dissipation is poor when in low
frequency but good in condition of high
frequency . P24.01 adn P24.02 is used to
set the starting point of zero and rated
speed overload current in order to
obtain a more reasonable under
different speed overload protection
Time curve
Motor overload protection
P24.02
P24.01
0
Overload
time
80min
Overload gain P24.00=1.20
64min
Overload gain P24.00=1.00
Overload gain P24.00=0.80
30min
5min
160s
5
s
100% 120% 140%
* Overload protection starting current
50%~100%,
When the overload accumulation degree is
greater than this value, the P07 group DO
terminal output function code"26"(Motor overload
warning) is selected and output valid signal
Unit'digit:Motor 1 protection selection
0:Turn off software overload protection
1:Enable software overload protection
Ten's digit:Motor 2 protection selection
0:Turn off software overload protection
1:Enable software overload protection
starting current
Motor output
frequency
Fn
160% 180% 200% 220%
Right: Motor Overload Protection Curve with Different
Overload Protection Gains
89
Chapter 5 function code table
80%
☆
☆
11