ABB 266 DDS, Manual

Page: 44 / 60

Custom linearization curve
The custom linearization curve transfer function it is used
typically for volumetric level measurement in tanks with an
irregular shape. It can be registered to a freely identifiable
transfer function with a maximum of 22 base points. The first
point is always the zero point, the last is always the final value.
Neither of these points can be altered.
A maximum of 20 points can be freely entered in between.
These points have to be defined by extrapolating the tank filling
table data and reducing them to 22 points.Once identified the
22 points they will need to be uploaded into the device by
either using an HART hand held terminal or a proper
configuration software like
ABB Field Information Manager
.
Configuration with the PC/laptop or handheld terminal
A graphical user interface (DD/FDI) is required for configuration
of the transmitter via PC or laptop. For operating instructions,
please refer to the software description.
A - Transmitter
B - Supply unit (communication resistor
not provided in supply unit)
Figure 53: Communication setup with handheld terminal
Figure 54: Connection examples with communication resistor in the connection line
The 266 transmitters can be configured by either one of the
following device.
• Any Hand Held terminals provided the 266 EDD has been
downloaded and enabled in the terminal.
• ABB Field Information Manager, a new free of charge
software configurator downloadable at
www .abb .com/ Instrumentation
• Any FDI/DTM based software for HART instruments
configuration provided it is compatible with EDD/DD or
FDI/DTM.
You can use a handheld terminal to read out or configure/
calibrate the transmitter. If a communication resistor is
installed in the connected supply unit, you can clamp the
handheld terminal directly along the 4 to 20 mA line. If no
communication resistor is present (min. 250
Ω
), you will need
to install one in the line. The handheld terminal is connected
between the resistor and transmitter, not between the resistor
and supply unit.
A - Transmitter
B - Supply unit (communication resistor
not provided in supply unit)
A B C
1
D E F
2
G H I
3
J K L
4
M N O
5
P Q R
6
S T U
7
V W X
8
Y Z #
9
@ % & /
0
+
-
F1 F2 F3 F4
A B C
1
D E F
2
G H I
3
J K L
4
M N O
5
P Q R
6
S T U
7
V W X
8
Y Z #
9
@ % & /
0
+
-
F1 F2 F3 F4
A B C
1
D E F
2
G H I
3
J K L
4
M N O
5
P Q R
6
S T U
7
V W X
8
Y Z #
9
@ % & /
0
+
-
F1 F2 F3 F4
44
2 6 6 DDS H A RT |
P R E SSU R E T R A N SM I T T ER S | O I/ 2 6 6 D DS - EN R E V. B