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5.5.3. Alarm and power outputs
The PCE-P30U transducer is equipped with 2 relay alarm outputs with
a normally open contact or with 1 relay output with a normally open
contact and 1 power supply output 24 V d.c. (depending on the ma
-
nufacturing variant code). Each alarm (power supply output 24 V d .c.
should be treated similarly to the alarm) can operate in one of six
modes. Fig. 17 shows alarm operation in the following modes: n-on,
n-off, on, off. Two remaining modes: h-on i h-off mean, respectively,
always on and always off. These modes are intended for manual simu
-
lation of alarm states.
In case of the transducer variant with 24 V d.c. output,
the second alarm mode should be set to
h-on
, in such a case,
the auxiliary power supply output will be constantly switched on.
