Parameter number
Parameter name
Unit of measurement
Description
P44
Zero Pressure Auto-
Calibration
bar/psi
This parameter lets the user
perform the initial auto-
calibration of the pressure
sensor.
It is used to compensate for
the offset signal of the
sensor at zero pressure
caused by the tolerance of
the sensor itself.
Procedure:
1. Access P44 when the
hydraulic system is at 0
pressure (no water
inside), or with the
pressure sensor
disconnected from the
piping: the actual value
of 0 pressure is
displayed.
2. Start the auto-
calibration by pressing
or (see Par.
6.2).
3. At the end of the auto-
calibration, the 0 (zero)
pressure is displayed,
or the “---“ (---)
message, if the sensor
signal is out of the
permitted tolerance.
P45
Pressure Minimum
Threshold [0-42]
G
bar/psi
Setting the minimum
pressure threshold.
If the system pressure falls
below this threshold for the
time set in P46, a low
pressure error E14 is
generated.
Default: 0 bar.
P46
Pressure Minimum
Threshold - Delay Time
[1-100]
G
s
Time delay setup.
This parameter sets the
time delay during which
the unit remains idle with a
system pressure below P45,
before generating the low
pressure error E14.
Default: 2 s.
P47
Pressure Minimum
Threshold – Automatic Error
Reset [OFF, ON]
G
Enabling/disabling of
automatic unit attempts in
case of low pressure error.
Default: ON.
6 System Setup and Operation
Smart Pump Range INSTRUCTION MANUAL
37
