37
BASIC PARAMETERS
Parameter
description
u.m. Default Min
Max
Step
P
P
3
3
.
.
5
5
Set
pressure
Sets the constant working pressure in
the system.
bar
3,5
1
9
0,1
psi
50
15
130
1,5
ATTENTION: in the absence of flow sensor
at the setting of the SET PRESSURE must be set
also the OFF frequency, as described below.
2
2
P
P
2
2
.
.
5
5
Second set
pressure
Sets a second working pressure.
To activate configure parameter EI in
ADV. parameters.
Bar
2,5
1
9
0,1
psi
50
15
130
1,5
A
A
6
6
.
.
0
0
Motor
current
Sets the motor rated current
at the inverter output (rated
current of the motor)
Mod. TT 6
A
6
1
6
0,1
Mod. TT 8
A
8
1
8
0,1
R
R
O
O
Motor
direction of
rotation
Set the direction of rotation
of the
three-phase motor (CW / CCW)
OFF frequency (shutdown frequency)
-
Working
without the flow sensor
-
In order to stop the inverter at zero demand
-
At the first pressure setting
you must define the SHUTDOWN FREQUENCY
(= frequency
at the minimum working flow or shutdown flow)
-
the “shutdown flow” must be
proportionate to the size of the pump
, and approx. 3% of
the pump max flow rate
key
instruction
display
START
Start the drive
in the presence of a
flow
demand
(a valve system must be open)
P° 3.5
+
Press simultaneously
the keys UP and DOWN
F 42
(example)
X 3
manually adjust the flow
to the “shutdown
flow” (the flow to which I want to turn off the
pump)
F 33
(example)
ENTER
Wait for the frequency to stabilize, and
confirm
with the ENTER key
F 33
(example)
-
Until the working frequency is greater than the OFF FREQUENCY ( = no demand for
water), the inverter will maintain the pump turned on.
-
When the working frequency drops below the OFF FREQUENCY ( = he water demand
has ceased), the inverter stops the pump.
-
You can change the OFF FREQUENCY during operation, by pressing the arrows UP
and DOWN and repeating the cycle over.
