Pentax IPFC 109, Operating Manual

Page: 24 / 216

24
Parameter Default Description
Co
n
stan
t
val
u
e
Fi
x sp
e
e
d
Co
n
st.v
al
u
e
2
set
Fi
x sp
e
e
d
2
val
.
Exte
rn
al
sp
e
e
d
To ensure proper operation of pressure control is recommended to place the sensor near the pump.
To compensate the pressure loss in the pipes (proportional to flow) it is possible to vary the pressure set in a linear
relation with respect to frequency.
It can perform the following test to verify the correct value of compensation:
1. install a pressure gauge away from the pressure sensor
2. open completely the valve
3. check the pressure gauge
--> Set the value of compensation. equal to the difference of the values from the two gauges.
When using a group of pumps, the pressure compensation to be applied to each pump is equal to the total pressure
compensation (when all the pumps are running at full speed) divided by the number of pumps in the group.
50
Frequency value to feed the pump.

50
Frequency value to feed the pump.

50
Minimum frequency below which the
pump tries to stop.
  
5
Delay for which the pump tries to stop
below freq.min.control.
  
20
Ramp time from freq.min.control to
min.motor freq. If, during this time, the
read value goes below the (set value -
delta control), IPFC powers the motor
again; otherwise, IPFC will stop the pump.
  
Q
H
Min mot. freq. Max mot. freq.
Set value (3 bar)
4 bar
Pressure
sensor
300 m
Compensation (1 bar)
Operating freq.
XXX [Hz]
Operating freq. 2
XXX [Hz]
Freq.min.control
XXX [Hz]
Stop delay
XX [s]
Control ramp
XXX.X [s]