ABB SACE Tmax XT2 User Manual page 177

Enabling and On the Ekip Signalling 3T page, it is possible to enable the individual inputs of the modules:
measurements PT1000 1, PT1000 2, PT1000 3 and 4-20mA current loop.
Parameter
Enable
The page also shows the status alarms and measurements detected for each input.
On the page Protection Parameters - Other parameters A (and B, if the dual set is activated) it is
Alarm signals
possible to activate and configure up to three alarm thresholds for each inputs, which are
independent of one another: THR 1, THR2, TH3.
Each alarm threshold provides the following configuration parameters:
Parameter
PT1000 1 THR 1
Protection
PT1000 1 THR 1
Config
PT1000 1 THR 1
PT1000 1 THR 1
hysteresis
On the Warnings/Alarms page, the status of all the control thresholds can be checked.
Statuses and
alarms
1SDH002031A1002 ECN000092998
Description
It enables the specific input and the relative checks of alarm
statuses and messages to be checked.
NOTE: the table shows the threshold 1 parameters of the input PT1000 1; for all the
other thresholds and inputs, the names and the references to be considered change
Description
Activates the PT1000 1 input test with alarm threshold THR
1
Defines whether the alarm is triggered by the measured
value exceeding (up) or falling below (down) the set THR 1
threshold.
Alarm threshold THR 1 of the PT1000 1 input.
The value is expressed in degrees Celsius (°C), which are
settable in a range: -40 °C .. 240 °C with 0.1 °C step.
NOTE:
thresholds are expressed as a percentage
settable in a range: 0 % - 100 % with 0.1 % step
(each step equivalent to 0.016
Hysteresis value valid for leaving the alarm condition if the
set alarm threshold THR 1 is exceeded.
The hysteresis parameter permits only positive values, the
trip unit decides whether to add or subtract this value to the
alarm threshold on the basis of the ConFigure parameter.
For example:

Config= Up, THR 1= 200 °C, hysteresis= 10 °C the
alarm is activated when 200 ° C is exceeded and is
deactivated when it falls below 190 ° C
The value is expressed in degrees Celsius (°C), which are
settable in a range: 0 °C - 50 °C with 0.1 °C step.
NOTE: the thresholds combined with the 4-20mA
current loop input are expressed as a percentage
settable in a range: 0 % .. 30 % with 0.1 % step
(each step equivalent to 0.016
Rev. B
the Current Loop 4-20mA

A)

A)
Default
Enabled
Default
Disabled
Down
200 °C
(PT1000) /
input
50 %
(4-20mA)
1 °C
(PT1000) /
1 %
(4-20mA)
SACE Tmax XT2 – XT4 | 177