Knick Stratos Pro A2 CC Série Guide Rapide page 14

Alarm
External activation of HOLD
The HOLD mode can be activated from outside by sending a signal to
the HOLD input (e.g. from the process control system).
Power supply
12...24 V AC/DC
Process control system
HOLD inactive
HOLD active
Manual activation of HOLD
The HOLD mode can be activated manually from the HOLD menu. This
allows checking or replacing a sensor, for example, without provoking
unintended reactions of outputs or contacts.
Press meas key to return to selection menu.
Alarm
When an error has occurred, Err xx is displayed immediately.
Only after expiry of a user-defi ned delay time will the alarm be
registered and entered in the logbook.
During an alarm the alarm contact opens. The display blinks and the
display backlighting turns red.
Error messages can also be signaled by a 22 mA output current.
2 sec after the failure event is corrected, the alarm status will be
deleted.
14
0...2 V AC/DC
10...30 V AC/DC
HOLD
10
input
11
Stratos Pro