Circutor DHB Series Instrukcja Użytkownika Pobierz pdf (Strona 25)

ged in the increasing sequence, such to preserve the following depen-

dence:

H1<H2<H3...<Hn

If the above is not fulfilled, the individual characteristic function will be

automatically switched off (will not be realized) and a diagnostic flag

will be set in the status register.

a) n-on b) n-off

c) on d) off

Fig. 11. Alarm Types: a) n-on, b) n-off c) on d) off.

5.4.5 Alarm types

The DHB-4xx meter is equipped with 2 alarm outputs with NOC contact

(make contact) and two alarm outputs with NOC/NCC contact (make

and break contact) (DHB-424). Each of alarms can work in one of the

six modes. The work of alarms in modes is presented in the fig. 12:

n-on, n-off, on, off. Two remaining modes: h-on and h-off mean suitably,

always switched on and always switched off. These modes are desti-

ned for the manual simulation of alarm states.

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Circutor DHB Series Instrukcja Użytkownika Strona 25