ABB AW400 Series - Functionality Overview; Transmitter (AW401) Functionality

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5 FUNCTIONALITY
The different functionality of the instrument depends on the Model Number selected, and it can be classified
in two main groups: Monitor-Indicator-Transmitter (AW401) or Monitor-Indicator-Transmitter-Controller
(AW402).
5.1 Transmitter (AW401)
The transmitter can support up to three sensors, and the association of input/output signals depend on the
configuration selected as per following tables.
Digital inputs:
CCI in ‘OR’ SELECTION CCI1 CCI2
CCI in ‘OR’ = NO Freezes measured value of Channel
1
Freezes measured value of
Channel 2 ( Channel 3 alone
cannot be frozen)
CCI in ‘OR’ = YES Freezes measured value of all
Channels installed
Freezes measured value of all
Channels installed
Table 4 - Digital Inputs Funcionality for Transmitter
Digital outputs:
Transmitter
Type
CCO1 CCO2 CCO3 CCO4 CCO5 CCO6 CCO7
Without
Cleaning
HI Alarm
Ch. 1
LO Alarm Ch
1
HI Alarm Ch.
2 (1)
LO Alarm
Ch. 2 (1)
HI Alarm Ch.
3 (2)
HI Alarm Ch.
3 (2)
Watch
dog
With
Cleaning
HI Alarm
Ch. 1
LO Alarm Ch
1
HI Alarm Ch.
2 (1)
LO Alarm
Ch. 2 (1)
Washing
command
Washing
command
Watch
dog
Table 5 - Digital Output Functionality for Transmitter
Analog Signal output 0/4-20 mA:
Instrument Channel 1 Channel 2 Channel 3
Transmitter
Retransmission of
analysis value for Sensor
on Ch 1
Retransmission of
analysis value for Sensor
on Ch 2 (1)
Retransmission of
analysis value for Sensor
on Ch 3 (2)
Table 6 - Analog Output Functionality for Transmitter
(1) – Only when Channel 2 is installed
(2) – Only when Channel 3 is installed