Sentera Controls HPS-M-10K-2, Mounting And Operating Instructions

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MIW-HPS-X-2-EN-000 - 14 / 03 / 2017 14 - 15
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Holding register 29 contains the value of the ‘Power-up timer’ before setting the
alert and range limit flags. The default value is 60 s. During this interval the alerts
and range limits are not compared with the current differential pressure / volume /
velocity and alert and range limit flags registers remain ‘0’. You can change the value
in this register only within the first 60 s after you have switched on your unit.
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Holding register 30
holds the K-factor. Enter the K-factor of the used fan / drive,
if it is known (check the datasheets of the selected fan / drive). The default value
is ‘0’, and you are allowed to write values in the range of 0—1.000. Writing values
out of this range does not change anything in this register.
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Holding register 31 is not used. When addressed, it returns “0”.
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Holding register 32
specifies if the device is an end device on the line or not via
connecting the NBT.
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Holding register 33 holds information about the current altitude varying from “0”
to “5.000”. The default value is ‘0‘, i.e. 0 m.
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Holding register 34 enables air velocity readout. If the value is ‘0’, air velocity
readout is disabled and if the value is ‘1’, air velocity readout is enabled and it is
accessible in input register 5. PSET-PTX-200 Pitot tube is necessary.
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Holding register 35 is used for calculation of the volume flow rate when K-factor
is not known. This register accepts values from 0 to 32.000. When the value is 0,
it is not used, if in use it takes values from 1 to 32.000 corresponding to the duct
cross sectional area in cm
2 .
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Holding register 36 is not used. When addressed, it returns “0”.
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Holding register 37 is used to define if the LED display will be on or off.
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Holding registers 38 defines the operating modes, i.e. differential pressure,
volume flow rate or air velocity.
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Holding register 39 is not used. When addressed, it returns “0”.
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Holding register 40 is used for sensor recalibration.
DIFFERENTIAL PRESSURE
TRANSMITTER
HPS-X -2