Lowara e-HME, Инструкция по установке, эксплуатации и обслуживанию

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en
– Original instructions
35
6.5.4 Sensor Configuration Parameters
No. Parameter Unit of
measurement Description
P41 Pressure Sensor Unit Of
Measure [BAR, PSI]
This parameter sets the unit of measure
(
BAr
,
PSI
)
for the
pressure sensor.
It affect 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 This parameter sets the Full Scale value of the 4-20mA pressure
sensor connected to analog input 17 and 18.
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).
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.