Interfaces - HBM MP85A Operating Manual

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Set up with the PME Assistant
In the PME Assistant, choose the desired conversion unit from the selection
menu in the "TRANSDUCER" area. If instead you want to use the unit stored
in the TEDS directly, deactivate this function in the TEDS dialog box.
When the TEDS is activated, its scaling data will be read out and converted to
the required physical unit. Should the unit stored in the TEDS and the
required conversion unit be incompatible because they describe different
quantities (e.g. torque transducer connected, conversion unit is "N"), an error
message is generated and scaling does not take place.
If a scaling error is reported once the TEDS is activated, the reason may be
that the value range specified by the two characteristic curve points is so
great or so small, that the measured values cannot be displayed with the set
decimal places.
You then need to adapt the number of decimal places in the "Amplifier" area. It
may possibly help to change to a different power of ten, such as "N" to "kN".
The PME Assistant displays this information for each channel in the "TEDS"
area with the "TEDS error status". For an accurate analysis, it is advisable to
display the data stored in the TEDS. You need the TEDS Editor and suitable
hardware, e.g. the HBM TEDSdongle, to connect the sensors.
The data for the minimum and maximum bridge excitation voltage in the
TEDS is also checked.
If, instead of using the PME Assistant, you are parameterizing directly e.g. by
bus command, you must use Object 2122 to set the required conversion unit
before activating TEDS.
The available units match the selection list provided by the PME Assistant.
CAUTION
If several transducers are connected to an MP85A amplifier input in
parallel, their TEDS data cannot not be used as neither the error-free
reading out of parallel connected TEDS is ensured nor can a summation
of the individual parameters take place. In this case, ensure that the
fields in the TEDS dialog are not activated for the channels concerned.

3.6 Interfaces

Use the PME Assistant to set up and parameterize the device via the Ethernet
or CAN interfaces. In automatic applications, the devices are integrated into
the machine control via fieldbus interfaces.
HBM
MP85A process controller
A2392−5.0 en