User manual - RATEMETER STI-N118
•
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.
•
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.
“SEt P”
- first threshold of the relay (range 0 ÷ 999999).
Threshold is the medium value of
relay hysteresis.
“SEt P2”
- second threshold of the relay (range 0 ÷ 999999). 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 ÷ 99999). 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.
Presented parameters should be set to ensure that
“SEt P” + “HYSt”,
“SEt P2” + “HYSt”, “SEt P” - “HYSt”
or
“SEt P2” - “HYSt”
does not exceed 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 his state).
“modE”
- relay operation mode:
“noACt”
- the relay is not active (permanent turned off)
“on”
- one threshold mode; the relay is turned
“ON”
when input signal
exceeds
“SEt P”
+
“HYSt”
value,
and is turned off back when the input
signal became lower than
“SEt P” - “HYSt”
,
“oFF”
- one threshold mode; the relay is turned
“OFF”
when input signal
exceeds
“SEt P”
+
“HYSt”
value,
and is turned on back when the input
signal became lower than
“SEt P” - “HYSt”
,
“in”
- two threshold mode; the relay is turned
“ON”
when the input signal is
bigger than
lower threshold
+
“HYSt”
and lower than
bigger threshold
-
“HYSt”
, and turned off when the input signal is
contained in the second zone. The
bigger threshold
means bigger one
of
“SEt P”
and
“SEt P2”
thresholds, the
lower threshold
means lower
one of
“SEt P”
and
“SEt P2”
thresholds.
“Out”
- two threshold mode; relay is turned
“OFF”
when the input value is
bigger than
bigger threshold
+
“HYSt”
and lower than
lower
threshold
-
“HYSt”
, and turned on when the input signal is contained in the
second zone. The
bigger threshold
means bigger one of
“SEt P”
and
“SEt P2”
thresholds, the
lower threshold
means lower one of
“SEt P”
and
“SEt P2”
thresholds.
“modbuS”
- the relay is controlled via RS-485 interface, independently on the input
signal.
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