DAB PUMPS PWM 201, Instruction For Installation And Maintenance

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Pressure sensor settings
PR value Type of sensor Information Full scale [bar] Full scale [psi]
0 6.6 Ratiometric (0-5V) 501 R 16 bar 16 232
1 6.7 Ratiometric (0-5V) 501 R 25 bar 25 363
2 6.8 Ratiometric (0-5V) 501 R 40 bar 40 580
3 4-20 mA 4/20 mA 16 bar 16 232
4 4-20 mA 4/20 mA 25 bar 25 363
5 4-20 mA 4/20 mA 40 bar 40 580
Table 17: Pressure sensor settings
The setting of the pressure sensor does not depend on the pressure to be obtained, but on the sensor to be fitted on the
system
.
6.5.8 MS: Measurement system
This sets the measurement unit system; either international or Imperial The values displayed are shown in Table 18.
Units of measurement displayed
Value International unit of measurement Imperial unit of measurement
Restart bar
Temperature °C °F
Flow l / min gal / min
Table 18: Unit of measurement system
6.5.9 FI: Flow sensor setting
This enables setting of operation as described in Table 19.
Flow sensor setting
Value Type of use Notes
0 without flow sensor default
1 single specific flow sensor (F3.00)
2 multiple specific flow sensor (F3.00)
3 manual setting for a general single pulse flow sensor
4 manual setting for a general multiple pulse flow sensor
Table 19: Flow sensor settings
In the case of multi inverter operation, use of multiple sensors can be specified.
6.5.9.1 Operation without flow sensor
When the setting without flow sensor is selected, the FK and FD settings are automatically disabled as these parameters are not
necessary. The parameter disabled message is indicated by an icon showing a padlock.
It is possible to choose between 2 different operating modes without flow sensor by means of the parameter FZ (see par. 6.5.12):
Minimum frequency mode: this mode allows you to set the frequency (FZ) below which it is considered that there is zero flow. In this
mode the electropump stops when its rotating frequency falls below FZ for a time of T2 (see par. 6.6.3).
IMPORTANT: An incorrect setting of FZ causes:
1. If FZ is too high, the electropump could cut out even in the presence of flow and then start again as soon as the pressure
falls below the restarting pressure (see 6.5.5). So there could be repeated episodes of switching on and off, even quite
close together.