User manual - METER SWE-73-L
6.2.
DETECTION OF THE PEAK VALUES
The
SWE-73-L
controller is equipped with peaks detection function. It can detect a peaks
of the input signal and display their values. Presets connected with this function are placed in
“
HOLd”
menu (see description of
“
HOLd” menu
). The detection of the peak can be done if
the measured signal raises and drops of value at least equal to parameter
“
PEA”
. Detected
peaks are displayed during the time defined by parameter
“
timE”
. If a new peak will be
detected while one is displayed, this new peak will be displayed and display time counter will
be cleared
(figure 6.2). If no peaks are detected while time
“
timE”
elapses
,
device starts to
show the current value of input signal again.
Figure 6.2. Process of peaks detection
6.3.
CONTROL OF THE RELAY OUTPUTS
Device is equipped with one bistable SPDT relay output. Front panel LED named
“R”
indicates the state of the relay output.
After device power on relay is in the same state as it was set while power off (see
parameter
“AL”
of
“rEL”
menu description). There is
no possibility
to change relay state
until
10 seconds elapsed since device power on. During this period it is required to power
device by at least 3.5 mA current. Otherwise the waiting time is extended by the time of waiting
for the correct current. Each next change of the relay state is possible after at least 4 seconds
since last change of the relay state. This delay is also extended by the time of waiting for the
correct current (minimum 3.5 mA). During device power off the relay is set according to the
value of
“AL”
parameter.
Modes of the control can be changed depend on the values of parameters
“SEtP”
,
“SEt2”, “HYSt”
,
“modE”
and
“AL”.
Depend on
“modE”
parameter, relays can be used or
controlled over one or two thresholds values.
If one threshold is used (figure 6.3) the relay can be turned on (
“modE”
=
“on”
) or off
(
“modE”
=
“oFF”
) when the input signal value enters the
zone A.
If two thresholds are used
(figure 6.4) the relay will be turned on when value of input signal enters the
zone A
(
“modE”
=
“in”
) or
zone B
(
“modE”
=
“out”
) and turned off if the signal enters the second one.
13
“timE”
measure
time
“timE”
“PEA”
“PEA”
real measurement result
display value
