Calibration; Calibrating The Potentiometric Position Transmitter - ABB AV3 Instruction Manual

POSITION TRANSMITTERS

CALIBRATION

Calibrating the Potentiometric Position Transmitter

AV23
AV33
AV44
AV 1
AV 2
CALIBRATION
A - 2
The following text details the calibration procedures of the position
transmitter options. There are two procedures for calibration; one for
the potentiometric option (AV
milliamp option (AV
The following text provides a calibration example using the potentio-
metric position transmitter. This example can be used as a guide for
other applications. Final calibration of the potentiometric position
transmitter option depends on the application. Field connections to
the potentiometer are shown on a label located inside the positioner
cover, and is shown in Figure A-1.
NOMENCLATURE
AV23
Av33
AV44
AV 1
AV 2
Figure A-1. Terminal Block
Connections TB1-1 through TB1-5
The nomenclature and terminal connections of Figure
described as follows:
The positive (+) and negative (-) connections at position TB1-4 and
TB1-5 refer to the four to 20 milliamp signal to the I/P converter.
The positive (+) and negative (-) connections at position TB1-4 and
TB1-5 refer to the four to 20 milliamp signal to the servo assembly.
The positive (+) and negative (-) connections at position TB1-1 and
TB1-2 refer to the output signal from the four to 20 milliamp position
transmitter. The connections at TB1-3, TB1-4 and TB1-5 go to the
servo assembly.
Depicts the connections for the potentiometric position transmitter
option (not available on Type AV44 positioners).
The positive (+) and negative (-) connections at position TB1-1 and
TB1-2 refer to the output signal from the four to 20 milliamp position
transmitter.
1 ) and another for the four to 20
2 ).
TB1 CONNECTIONS
1 2 3 4
+
+
+ –
+24
+ –
5
–
–
T00807A
A-1 are