ABB 266 HART Series, Инструкция по эксплуатации

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34 OI/266/HART-EN Rev. M | 2600T Series Pressure transmitters
7 Commissioning
For HART transmitters with advanced HART functionality or
Safety HART certified to IEC 61508 (output code 1 or 8) the
LCD can be with integrated keypad or with TTG (Through-The-
Glass) activated keypad, having same appearance as follows
and with buttons used for menu-controlled configuration.
All displays feature a LCD dot matrix for clear visualizations.
Here after a possible view according to selected transmitter
configuration.
The HART short tag (1) is shown in the upper left corner by
maximum 8 characters.
The value (2) is displayed with 5 digits, sign and decimal point,
for one line visualization or with 8 digits, sign and decimal point,
for two lines visualization.
The engineering unit (3) can be anyone of HART list.
A bargraph (4) also provide a different format of indication with
relevant percentage for a selectable variable.
The polarity symbol (5) is displayed when high/low pressure
sides of a differential pressure transmitter are configured to
work as “reverse” action, via HART command. Once the
transmitter is connected to the process, it is possible to
change via software the polarity of the process connection
instead than mechanically reverse the impulse lines.
The lock symbol (6) appears when the write protection is
enabled or either the local operation has been disabled or the
device lock has been activated via relevant HART commands.
7.9 Local display
According to selected HART functionality and LCD display
option, 266 pressure transmitter is equipped with different
display type. Hereafter the possible variants.
- For HART transmitters with standard functionality (output
code 7) two different integrated LCD displays are available, as
shown in the following figures. On the left is the version without
selecting option “R1” which feature on-board Zero and Span
buttons. On the right is the version if selecting option “R1”
without on-board buttons which are functionally replaced by
the Z and S push buttons located under the nameplate (with
dip switch 3 up, Zero and Span buttons act as set PV Bias and
Reset PV Bias respectively, for both version).
Figure 46: Windowed front cover and LCD display
The ID of variables (7) is a kind of acronym which identifies the
variable currently displayed, with following possibilities.
ID Description
PDP Pressure value before transfer function/linearization
ENG Measured value after transfer function (scaled output)
OUT
Analog current value in mA
PV% Analog output in percentage of calibrated range
TZ1 Counter of totalizer 1
TZ2
Counter of totalizer 2
BCH Batch counter
ST Sensor teperature
SP Static Pressure
HMI
Measured value after dispaly scaling (HMI transfer function
and scaling
7.10 Installing/Removing the LCD display
— Unscrew the housing cover of the communication board/
LCD side.
Important.
With an Ex d / Flameproof design, please refer to the
section “Securing the housing cover in flameproof areas”.
— L1/L5 display versions can be installed in different positions
(90° rotations) and shall be removed as per instructions
listed at paragraph 5.9
— LS display installation shall be performed carefully
plugging-in transducer connections
Important. Retighten the housing cover until it is hand-tight. If
necessary, refer to the section “Securing the housing cover in
flameproof areas”.
Important.
Picture shows L1/L5 display versions. LS windowed
cover is dimensionally different (short) but features the same
threads and requires the same installation practices.
7.11 Securing the housing cover in flameproof areas
Each of the front faces of the electronics housing features a
locking screw (hex-head socket screw) on the bottom side.
— Install the housing cover to the housing by hand-tightening
it.
— Turn the locking screw counterclockwise to secure the
housing cover. This involves unscrewing the screw until the
screw head stops at the housing cover.
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