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ABB STT04 - Page 192

ABB STT04
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TZID/AZH POSITIONER
CREATE/MODIFY CONFIGURATION
M - 3
Type a descriptor string using up to 16 characters.
This field can be used for notations about the device
or process.
To select a character, press the key that has the
desired character. Continue to press the key until the
desired character appears. Use the right arrow key to
move to the next character. Use the left arrow key to
go back to the previous character.
Enter up to 32 characters to describe the positioning
task.
Enter a day and press . Enter a month and
press . Enter a year and press .
This date can represent the creation date of the con-
figuration, the date the device or element was
installed, or some other significant date.
Select mA.
Enter the low set point and press
. Enter the
high set point.
Additional selections include EQUAL% 25:1 and
EQUAL% 50:1 and USER DEFINED.
USER DEFINED is present only if a characteristic
curve had been previously defined. Refer to SPE-
CIAL FEATURE in this section for details about
defining a characteristic curve.
Represents the relationship between input current
and movement of the valve.
Defines the accuracy with which the valve position is
corrected to reach the set point. If control deviation is
smaller than the value defined by the deadband, no
further correction occurs, and the air output is set to
the neutral position.
Key Display Comments
ENTER
DESCRIPTOR:
PREVIOUS NEXT
ENTER
POSITIONING TASK:
_
PREVIOUS NEXT
ENTER
DATE:
DAY: nn
MONTH: nn
YEAR: nnnn
ENTER
ENTER ENTER
ENTER
SET-POINT UNITS
mA
%
ENTER
LOW SET-POINT RANGE
4.00 mA
HIGH SET-POINT RANGE
20.00 mA
ENTER
ENTER
CHARACTERISTIC CURVE
LINEAR
EQUAL % 1:25
EQUAL % 1:50
ENTER
VALVE ACTION
DIRECT
REVERSE
ENTER
DEADBAND
(0 - 10%)
0.00%

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