Werbung
Verfügbare Sprachen
Verfügbare Sprachen
2.4.5 Alarm Output
If required an alarm output (terminals 4 and 5) can be monitored to evaluate the valve
performance. It gets active if the positioner is not able to track the stroke value against the set-
point signal (e.g. for failing or too low supply pressure). Inverting the alarm output is possible
through the communication software.
In case of an alarm situation a connected voltage (max. 24V AC/DC) is switched.
The admissible current load is 70 mA, allowing also relays to be operated directly. As shown
below it is convenient to use the supply voltage (24 V) to operate the alarm output.
Examples for a relay connection:
K1.1
K1.2
For inductive loads a recovery diode has to be provided.
With an active alarm output the red LED on the connecting plate is on.
2.4.6 AS-I Version
Positioners in AS-Interface design have an AS-I plug connection on the rear side
of the positioner which connects the positioner to the AS-I control circuit. An
additional voltage supply is not required.
As AS-I is a PELV system, the grounding terminal must not be connected to the
system ground.
For further information, please refer to "Additional modules"
28
+24V
0V
K1.1
+24V
K1.2
0V
Werbung
