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7.2.3 BCD Switch
The following switch positions can be selected:
Switch
22082E00
22083E00
22084E00
22085E00
22086E00
22087E00
22088E00
22089E00
22090E00
22091E00
283023 / 862160310030
2023-10-16·BA00·III·en·01
Function
Displays the current pressure inside the Ex p cabinet or the purge time
that has been activated.
Sets the minimum operating pressure "MINA".
Sets the pre-alarm pressure "MINP".
Note when using digital Ex p purge valves:
Guide value setting: Approx. 1 mbar above the "MINA" value.
Sets the target operating pressure "PROP".
Sets the minimum differential pressure "DFFA".
Sets the target purge pressure "PRPT".
Sets the maximum operating pressure "MAXA".
Note when using digital Ex p purge valves:
Guide value setting: Approx. 2 mbar below the "MAXA" value.
Sets the purge time.
Selects the type of function of signalling relay S1.
Selects the function of Ex i terminals 21 and 22.
Ex P system
Pressurization Control Systems
Series x621/1x
Commissioning
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