DAB PUMPS ACTIVE DRIVER M/M 1.1 Manual page 12

8.5.5 rP: Setting the fall in pressure for restarting
Expresses, in bars, the fall in pressure that makes the pump restart.
rP may be set from a minimum of 0.1 to a maximum of 1.5 bar.
rP is equipped with a limiting system depending on the combination of the SP value so as to have in any
case a minimum restarting pressure of 0.3 bar.
8.5.6 Ad : Setting the interconnection address (excluding A.D. M/M 1.1)
With the ACTIVE DRIVER system it is possible to realise booster sets composed of two elements
communicating by means of serial interconnection (see fig.3). In this type of installation it is necessary
for the two units to have a different identifying address (Ad).
The admissible values are: "- -", 1 and 2:
- When "Ad" is "- -" the communication is disabled.
- When "Ad" is "1" it is called Secondary ACTIVE DRIVER (booster).
- When "Ad" is "2" it is called Primary ACTIVE DRIVER (leader).
Attention: If two interconnected ACTIVE DRIVER units are set with the same "Ad" value, the
When the communication does not work (due to incorrect setting of the "Ad" value, for wiring
problems, or other reasons), the two ACTIVE DRIVER units will work as though they were two
completely independent machines, but they will indicate the impossibility of dialogue by making the
display blink when the states "Go" or "Sb" are shown.
When the "Ad" values are correctly set, some regulating parameters are aligned. In particular the
secondary ACTIVE DRIVER copies the following values from the primary ACTIVE DRIVER:
- SP : Setting of the set point pressure.
- rP : Setting of the restarting pressure drop.
- Eb : Enabling of the booster pump.
- CM : Method of exchange.
- dP : Setting of the pressure differential at low flow rates.
- P1 : Setting of the input function 2 set point P1.
Note: During operation it is possible to change all the parameters of the ACTIVE DRIVER on each of
the two machines.
8.5.7 Eb : Enable booster (pre-set value 2) (excluding A.D. M/M 1.1)
When two ACTIVE DRIVER units are interconnected with each other, in the case where only one
ACTIVE DRIVER is not able to satisfy the user, there is the possibility of activating the two
electropumps at the same time.
Eb = 1 :
Eb = 2 :
8.6
OPERATION : TECHNICAL ASSISTANCE DISPLAYS AND SETTINGS
Access keys MODE and SET and + for 5 seconds
8.6.1 tb: Setting the reaction time of the water lack blockage
The setting of the reaction time of the water lack blockage allows you to select the time (in seconds)
taken by the ACTIVE DRIVER system to indicate the lack of water in the electropump. The variation
of this parameter may be useful if it is known that there is a delay between the moment in which the
electropump is switched on and the moment in which it actually starts delivering.
8.6.2 GP: Setting the gain of the proportional coefficient of the PI
For nearly all systems, the GP parameter set in the factory is the optimum one. However, if there
should be any problems in regulation, this setting may be adjusted. Indicatively it may be said that, for
example, the presence of great swings in pressure or of a slow response of the system to variations in
pressure may be compensated by high GP values. Instead the occurrence of "vibrations" in pressure
(extremely rapid pressure swings around the set point value) may be attributed to too high a GP value.
communication does not work and there may be malfunctions in regulation.
The leader-booster operating mode is disabled, so only one electropump at a time will
be active.
If during operation the leader electropump is not able to satisfy the user, the booster
electropump will not be switched on.
The leader-booster operating mode is enabled, so 2 electropumps can be activated at the
same time.
If during operation the leader electropump is not able to satisfy the user, the booster
electropump will also be switched on and will work at the maximum frequency, while
the leader machine will continue to modulate the rotation frequency according to the
user.
ENGLISH
46
(ref.Table no. 14 page 53)