MENU
ESC
Pressing this button operator can cancel the changes done up to now (if they were not
approved by
[ENTER]
button after the
“SEt?”
ask) and come back to menu
Loop Powered Display
250 SERIES
12
7.3. MENU DESCRIPTION
7.3.1. “rEL” menu
Due to problem with direct displaying of
“m”
letter, it is exchanged with special sign “m“.
Independently in user manual letter
“m”
is used to make it more readable (example:
“modE”
).
The relay output and LED (named
R
) can be controlled depend on both - the current value and the
peak value (when peak detection is active) of the input signal.
Presented parameters should be set to ensure that
“SEtP”
+
”HYSt”
,
“SEt2”
+
”HYSt”
,
“SEtP”
-
”HYSt”
or
“SEt2”
-
”HYSt”
do not exceeds the measure range. Additionally, in two threshold mode
(
“modE”
=
“in”
or
“out”
), the hysteresis for both thresholds must not cover each other (in other
case relay can't change its state).
This menu allows to configure the operation mode of relay and LED marked
“R”
. Principle of the relay
operation is described in paragraph
CONTROL OF THE RELAY OUTPUT
.
- password checking. If some password different from
“0000”
is set, then every enter to
main menu follows the entering of password. If entered password is correct then first menu
position will be displayed else warning
“Err”
, and unit returns to measurement mode.
“- - - -”
“SEtP”
first threshold of the relay (range -999 ÷ 9999). Negative values can be input by selecting a “-” sign on first digit
(to change value use
[^]
and
[v]
buttons).
Threshold is the medium value of relay hysteresis
.
“SEt2”
second threshold of the relay (range -999 ÷ 9999). Negative values can be input by selecting a “-” sign on first
digit ( to change value use
[^]
and
[v]
buttons). This threshold is accessible when
“modE”
parameter is set to
“in” or “out” value.
Threshold is the medium value of relay hysteresis
.
“HYSt”
hysteresis of relay (range 0 ÷ 999). Full hysteresis of the relay is equal to 2x “HYSt” parameter.
The relay state can change when an input signal is out of
threshold-hysteresis
to
thhysteresis
zone.
Functions of buttons when editing numeric and switching parameters :
While editing numeric parameter - change of current (flashing) digit.
While editing switch parameter - selection of switch parameter.
If numerical parameter is being
changed or edited a quick
press
ing of the
[ENTER]
button
will
change edited position. A long
er
press
and hold (min 2 sec)
of
the
[ENTER]
button
will
causes
the
display
to prompt the user
a
“SEt?”
ask, which allow user to
make sure if change of the parameter value is correct. If switch parameter is being
edited, a short press of
[ENTER]
button causes of display a
“SEt?”
ask. When
[ENTER]
button is pressed again (while
“SEt?”
is displayed) the new value of the
parameter is stored in EEPROM memory.
