INVT GD300-01A, Operation Manual

Page: 89 / 187

Goodrive300-01A series VFD for air compressor Function description
-83-
Function
code
Name Description Default Modify
2: Both of pressure P1 and P2 are displayed
(valid only when P18.00=0)
P18.38
Upper limit of
pressure sensor
P2
0.00
–20.00 Mpa
It is related to the actual range of pressure
sensor, the corresponding voltage of P18.04
is P05.44 .
Note: When restoring to default values, the
value will stay in current value.
1.60Mpa
◎
P18.39
Auxiliary pressure
protection
enabling
0: Disable
1: Enable
0
◎
P18.40
Auxiliary pressure
pre-alarm
0.00
–20.00
When P18.39 is enabled and the auxiliary
pressure is larger than P18.40, the system
indicates auxiliary pressure pre-alarm by
setting BIT7 of P19.14 to 1.
0.90Mpa
○
P18.41
Auxiliary pressure
alarm
0.00
–20.00
When P18.39 is enabled and the auxiliary
pressure is larger than P18.41, the system
indicates pressure alarm by setting BIT9 of
P19.14 to 1, and emergency stop will be
applied.
1.00Mpa
○
P18.42
Fan frequency
reference mode
0: Temperature PID
1: Analog P2- setting
2: RS485 communication
0
◎
P18.43 Fan control mode
0: Air compressor mode, the
power-frequency fan starts/stops as per the
temperature;
1: Terminal, the power-frequency fan
starts/stops via terminals;
2: 485 communication (address 0X201B,
write 1 to start, write 3 to stop)
0
◎
P18.44
Automatic
frequency
reduction
threshold
0
–120%
Add automatic frequency reduction function.
When the output current is larger than
automatic frequency reduction threshold, it
will adjust the output frequency via regulator
120%
○