Thyracont VSL53D, Operating Instructions Manual

Page: 45 / 64

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Readjustment by an External Voltage Signal
Adjustment at atmosphere or zero pressure is possible by applying a defined vol-
tage potential to connector pin 9 (see section 3.3.2) for a short time (min. 20 ms).
Depending on the setting of software parameter »Digital Logic« (DL) the sensors
are being adjusted as soon as pin 9 is set to
a) GND (parameter value 0, active low) or to
b) 3 ... 24 VDC (parameter value 1, active high, standard ex works).
Adjustment by external voltage signal is permanently saved only
when ambient sensor and internal Piezo differ by at least 0.5 mbar.
Otherwise the adjustment will be lost as soon as the transducer is
disconnected from power supply!
Readjustment via Software Command
See section 5.7.
VSL-RS485-200116