Sensor Replacement; Replacing The Sensor With A Sensor; Of The Same Type; Replacing A Sensor With A Sensor - ABB AWT420 Operating Instruction

AW T4 2 0 | U N I V E R S A L 4 - W I R E , D U A L- I N P U T T R A N S M I T T E R | O I/A W T4 2 0 - E N R E V. B

Sensor replacement

A sensor can be replaced by a sensor of the same type or a
different type. If a sensor is replaced by one of the same type,
the sensor setup parameters from the sensor being removed
can be retained (see page 23) for use with the new sensor, or
set to use the values stored in the new sensor.
Replacing the sensor with a sensor of the same type
To replace a sensor of the same type and retain existing sensor
setup parameters:
1 Disconnect the old sensor from the EZLink connector – see
page <?>. The diagnostic message
displayed in the status bar at the bottom of the main
Operator page.
NOTICE
To retain existing transmitter setup parameters for use
with the new sensor:
Do not acknowledge sensor removal after the
(to 2):Removed warning is displayed. If sensor removal
is acknowledged, the transmitter configuration for the
channel is reset to factory defaults.
To maintain the value of analog, digital and relay outputs
during sensor replacement, press the
Manual Hold from the Operator page menu.
If a failure current has been configured for an analog
output, the output's value is not held. Sensor removal is
classed as a failure by the diagnostic system and this
overrides the existing analog output current.
2 Connect the new sensor to the same EZLink connector –see
page <?>. A user prompt is displayed asking which
configuration to use:
AWT420
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08:14:45
New Sensor S1 (to 2)
Detected
Use sensor cfg?
Use TX cfg?
Tx Sensor
S1 (to 2):Removed is
S1
key and select
3 Press the (TX) to use the sensor configuration saved in
the transmitter (used with the sensor previously connected)
or press the key (Sensor) to use the sensor configuration
stored in the new sensor.
The Easy Setup prompt is displayed:
AWT420
03-09-2019
08:14:45
Sensor S1 (to 2)
Detected
Start Easy
Setup ?
4 Press the key ( ) to cancel Easy Setup and start
measurement using the sensor immediately, or press
the key ( ) to edit the sensor configuration using
the Easy Setup menu – see page 21.
Replacing a sensor with a sensor of a different type
To replace a sensor with a sensor of a different type:
1 Disconnect the old sensor from the EZLink connector – see
page <?>. The diagnostic message
displayed in the status bar at the bottom of the main
Operator page.
2 Press the
key and select Ack Sensor Removed from the
Operator page menu to reset the transmitter configuration
parameters for this sensor to factory default values.
3 Connect and configure the new sensor as described on
page 22.
23
S1 (to 2):Removed is