ABB HART HHT 275 Manual page 9

10 Alarm limits
1 Alarm limit 1
Enter alarm limit 1 as a percentage of the stroke range.
2 Alarm limit 2
Enter AL2 as a percentage of the stroke range.
3 Alarm, S1 and S2
Select the alarm and switching outputs according to the following table:
AlarmOn=active low
S_1ON=active low
S_2ON=active low
S1ON=act below
S2ON=act below
10 Digital input
The digital input defines six functions in the TZID-C/TZID-C200 positioner that
can be selected locally. If, for example, locks are activated, the positioner only
works in the selected operating mode when a voltage < 12 V is applied to the dig-
ital input. Please refer to the manual for the TZID-C positioner (42/18-64 EN) or
for the TZID-C200 positioner, respectively (42/18-73 EN) for a detailed descrip-
tion of the digital input functions.
42/18-75 EN
OFF = alarm output HIGH active
ON = alarm output LOW active
OFF = switching point 1 HIGH active
ON = switching point 1 LOW active
OFF = switching point 2 HIGH active
ON = switching point 2 LOW active
Off =switching output 1 active when exceeded
ON =switching output 1 active when below
Off =switching output 2 active when exceeded
ON =switching output 2 active when below
"Settings" menu
"Settings" menu
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