Nastec VASCO, Operating Manual

Page: 17 / 34

17
parameter
defa
ul
t
desciption
Co
n
stan
t
p
re
ss.
Fi
x sp
e
e
d
Co
n
st.p
re
ss.
2v
al
Fi
x sp
e
e
d
2
val
.
Exte
rn
al
sp
e
e
d
Co
n
stan
t
te
m
p
.
Co
n
stan
t
fl
o
w
bar
Pressure unit



°C
Temperature unit

16
Maximum pressure of pressure transducer;
Set the pressure value of the transducer when
output signal is 20 mA equivalent to the highest
value of pressure range (i.e. 0 – 10 bars
transducer range) 10 bars = 20 mA
    
100
Full scale of the temperature sensor.
From the plate data of the sensor can read the
temperature at which the sensor provides output
20 mA. (or 10 V)

0
Full scale of the temperature sensor.
From the plate data of the sensor can read the
temperature at which the sensor provides output
4 mA. (or 0 V)

100
Full scale of the flow sensor.
From the plate data of the sensor can read the
flow at which the sensor provides output 20 mA.
(or 10 V)

20%
Zero point adjustment. (20 mA x 20% = 4 mA).
      
10
Maximum pressure allowed in the system. If the
pressure goes over this value, an alarm occurs
and the pump is stopped. Pump is automatically
restarted if the pressure goes below the
maximum value for a period of at least 5 seconds.
      
0
Minimum pressure allowed in the system. If the
pressure goes lower than the set value, an alarm
occurs and the pump is stopped. Pump is
automatically restarted if the pressure goes
higher than the minimum value for a period of at
least 5 seconds. This parameter is particularly
useful in the event a system pipe breaks. It is
suggested to set a value higher than 0.
      
0.65
If the pump goes into dry-running, the cosphi
reaches its lowest level. To set this value, contact
the pump manufacturer or test by closing the
suction and checking the value on the VASCO
display; a value can be set by assuming a dry
cosphi equivalent to 60% of the rated cosphi
specified by the manufacturer.
      
Dry run cosphi
cosphi = X.XX
Min alarm pres.
p = XX.X [bar]
Max alarm pres.
p = XX.X [bar]
Offset sensors
x = XX.X [%]
F.s. flow sensor
20mA = XXX.X [m3/h]
Min temp. sensor
4mA = - XXX.X [°C]
F.s. temp.sensor
20mA = XXX.X [°C]
F.s. press.sensor
20mA = XX.X [bar]
Unit
°C / °F
Unit
bar/psi