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HPSPX-2
REGISTRES MODBUS
INPUT REGISTERS
Data type
1
Output
unsigned int.
2
Differential pressure
unsigned int.
Volume flow rate
3
unsigned int.
high**
4
Volume flow rate low** unsigned int.
5
Air velocity
unsigned int.
Calculated maximum
6
unsigned int.
volume flow rate high
Calculated maximum
7
unsigned int.
volume flow rate low
Air pressure/volume/
8
unsigned int.
velocity span flag
Air pressure/volume/
9
unsigned int.
velocity alarm flag
10
Feedback lost
unsigned int.
11
Sensor fault
unsigned int.
MIW-HPSPX-2-FR-000 - 24 / 10 / 18
RÉGULATEUR PI POUR
PRESSION DIFFÉRENTIELLE
Description
Output value in percentage
Measured differential pressure
Air Volume flow rate in m
3
/h. Input register
3 contains high significant word, while
Input register 4 contains low significant
word of Volume flow rate. The value in this
registers is equal to the K-factor (holding
register 39) of the motor / fan multiplied
by square root of measured differential
pressure. If K-factor is not known, volume
flow rate is calculated via multiplying the
duct cross sectional area (holding register
44) by the air flow velocity. Pitot air velocity
(holding register 43) should be enabled and
a Pitot tube set connected.
Measured air velocity, active only when
holding register 43 is set to 1
Maximum possible flow rate calculated
according to the K-factor or the duct cross
sectional area
The flag indicates that measured data is
outside the setpoint span values. Set to
'1' when the measured value is outside the
pressure, volume or velocity setpoint span
values set defined by holding registers 12,
13, 18, 19, 20, 21, 27 and 28. Inactive
during Auto-Tune function is in progress
The flag indicates that measured data is
outside the setpoint alarm values. Set to
'1' when the measured value is outside the
pressure, volume or velocity setpoint alarm
values set defined by holding registers 14,
15, 22, 23, 24, 25, 29 and 30. Inactive
during Auto-Tune function is in progress
Indicates if differential pressure feedback
lost.
Indicates sensor failure
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Data
Values
0—1.000
100 =
HPSPX-1K0 -2
0— 1.000
100 =
HPSPX-2K0 -2
0— 2.000
100 =
HPSPX-4K0 -2
0— 4.000
100 =
HPSPX-10K -2
0—10.000*
100 =
HPSPX-1K0 -2
0—25.000
HPSPX-2K0 -2
0—40.000
1.000 =
HPSPX-4K0 -2
0—100.000
HPSPX-10K -2
0—180.000
0—300
100 =
HPSPX-1K0 -2
0—25.000
HPSPX-2K0 -2
0—40.000
1.000 =
HPSPX-4K0 -2
0—100.000
HPSPX-10K -2
0—180.000
0 =
0—1
1 = Pressure/Volume/Velocity setpoint is out of span
0 =
0—1
1 =
0 =
0—1
1 =
0 =
0—1
1 =
100,0 Pa
100,0 Pa
100,0 Pa
100,0 Pa
1.000 m
10 m/s
1.000 m
Pressure/Volume/Velocity setpoint is OK
Pressure/Volume/Velocity setpoint is within the
alarm range
Pressure/Volume/Velocity setpoint is out of the
alarm range
Feedback is available
Feedback is losts
Sensor OK
Sensor fault (Red LED4 blinks)
11 - 14
10,0%
/h
3
/h
3
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