INVT Goodrive300-01A Series Operation Manual page 73

Goodrive300-01A series VFD for air compressor
Function
Name
code
P18.06 Loading pressure
P18.07 Set pressure
Starting temperature of
P18.08
Stop temperature of
P18.09
the fan
P18.10 Setting temperature
Lower-limit frequency
P18.11 at load-carrying
running
when air compressor control is valid and the
air compressor supplies air as normal, if the
discharge pressure is higher than P18.05,
unloading automatically. If sleep function is
valid (P18.01=1), the VFD enters sleep state;
if the discharge pressure is lower than
P18.06, loading automatically. P18.07 is used
to set the air-supply pressure when the air
compressor runs stably. During load-carrying
running, the motor speed is controlled by
pressure PID, and the system keeps the
discharge pressure constant via adjusting
master speed. See 5.2 for details on pressure
control process logic.
Setting range: 0.00–P18.04
When the machine head temperature is
the fan higher than P18.08, the fan starts;
When the machine head temperature is lower
than P18.09, the fan stops;
P18.10 is used to set the target temperature
of the machine head when the air compressor
runs stably in dual-VFD mode, the fan speed
is controlled by thermostatic PID (P18.42=0),
PID calculation is carried out via P18.10 and
the machine head temperature to realize
thermostatic control.
Note: Temperature PID is only for dual-VFD
applications. The temperature PID of the main
motor frequency conversion regulates the fan
frequency conversion speed through analog
output.
Setting range: -20–150
P18.12–P00.04
frequency)
During the load-carrying running, the allowed
min. working frequency is P18.11.
Description
(upper limit
-68-
Function code description
Default Modify
0.60Mpa
0.70Mpa
75° C
65° C
75° C
of running
40.00Hz
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