Xylem LOWARA e-SVE - Sensor Configuration Parameters

en – Original instructions
39
6.5.4 Sensor Configuration Parameters
No.
Parameter
Unit of
measurement
Description
P40
Sensor selection [ P1 , ISP ,
USP ]
Analog input configuration setup:
- P1 absolute reading pressure sensor
- ISP 4-20 mA input as speed reference
- USP 0-10 V input as speed reference
Default: P1
P41
Pressure Sensor Unit Of
Measure [BAR, PSI]
This parameter sets the unit of measure ( BAr , PSI ) for the
pressure sensor.
It affects the head view LED parameter (see Par. 6.3.4).
Default: bar.
P42
Full scale value for
pressure Sensor 1 4÷20mA
[0.0÷25.0BAR] /
[0.0÷363PSI]
bar/psi
Setting of the full scale value of the 4÷20mA pressure sensor
connected to analog inputs 9 and 10 for the single-phase
version, and inputs 17 and 18 for the three-phase version.
Default: depending on the type of pump.
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]
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]
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]
Enabling/disabling of automatic unit attempts in case of low
pressure error.
Default: ON.
P48
Lack Of Water Switch
Input [DIS, ALR, ERR]
This parameter enables/disables the management of the lack
of input water (see Par. 4.3.3, terminals 13 and 14 for the
single-phase version, 11 and 12 for the three-phase version).
It defines the behaviour of the unit when the lack of water
input is enabled and the switch is open:
• DIS (DIS): the unit doesn’t manage the information coming
from the "lack of water" input
• ALr (ALr): the unit reads the "lack of water" Input
(enabled) and reacts, at the opening of the switch, by
displaying the corresponding alarm A06 on the display, and
keeping the motor running
• Err (Err): Err, the unit reads the Lack Of Water Input
(enabled) and reacts, at the opening of the switch, by
stopping the motor and generating the corresponding error
E11. The error condition is removed when the switch closes
again and the motor is started.
Default: ERR.