User manual for meter with U/I input PD72S
6.3. CONTROL OF THE RELAY OUTPUTS
The control of the object (measured signal) is realized via relay outputs. Front panel LEDs
named „
R
” indicates the state of particular relay output.
If device is not equipped with one or more relay outputs, menus refer to this relays
are available, but apply to LED indicators only. In such case LEDs indicates
exceeding of particular thresholds.
Modes of the control can be changed depend on the values of parameters
“SEtP”
,
“SEt2”,
“HYSt”
,
“modE”
,
“t on”
,
“toFF”
,
“unit”
and
“AL”.
Depend on
“modE”
parameter, relays can
be not used or controlled over one or two thresholds values.
If one threshold is used (Figure 6.4) the relay can be turned on (
“modE”
=
“on”
) or off
(
“modE”
=
“oFF”
) when the input signal value is contained in
zone A.
If two thresholds are
used (Figure 6.5) the relay will be turned on when value of input signal is contained in
zone A
(
“modE”
=
“in”
) or
zone B
(
“modE”
=
“out”
) and turned off if the signal is contained in the
second one.
Figure 6.4. One threshold control of the relay/LED outputs
Figure 6.5. Two thresholds control of the relay/LED outputs
The relay outputs and LEDs (named
R
) can be controlled depend on both - the
current value and the peak value (when peak detection is active) of the input signal.
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