Design And Function - ABB 265DS Operating Instruction

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Design and function

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The 265Dx and 265Vx digital transmitters are communication-ready field devices featuring
microprocessor-controlled electronics with multisensor technology.
For bidirectional communication, the devices have an FSK signal superimposed on the
4 ... 20 mA output signal (depending on their design) in accordance with the HART protocol; in
the case of devices that operate on a fully digital basis, communication takes place via the
PROFIBUS PA or FOUNDATION Fieldbus protocols, depending on their design.
The graphical user interface (DTM) can be used to configure, poll, and test the transmitter using
a PC, depending on the relevant protocol. Communication using a handheld terminal is also
possible, provided that the devices operate in accordance with the HART protocol.
A control unit, consisting of two buttons for setting the "lower range value" and "upper range
value" parameters and a write protection switch, is available for "local" operation.
Important
It is not possible to activate the write protection function via the control unit with the
FOUNDATION Fieldbus communication type.
The "local control unit" can be used in conjunction with a built-in LCD display for external
configuration and parameterization of the transmitter, regardless of the selected communication
protocol.
As standard, the electronics housing features a finish that is resistant to aggressive
atmospheres. The process connection is made from stainless steel; another standard feature.
The housing cover and button unit may be leaded.
The name plate contains information about the design of the transmitter. A full list of the
information on the name plate can be found in the "Safety" section.
When making enquiries, always remember to quote the universally valid serial number (S/N)
and year of manufacture (Year).
Important
In the case of explosion-proof designs, a description of the Ex design is also provided.
Barrel housings: On the name plate
DIN housings:
Another separate plate, located in front of the "local" control unit, describes the functions of the
three control elements using easily comprehensible symbols. In addition, a tag plate indicating
the measuring points may be attached (as an option).
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IM/265D/V-EN-02
On a separate plate
265Dx, 265VS
Design and function
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