User manual - METER SRT-73
t on
- turn on delay time, the relay is turned on with delay equal
t on
if the input value
exceeds appropriate
border value
(defined with
threshold
and
hysteresis
), at
least
t on
time.
t on
range 0 ÷ 99.9, defined with 0.1 sec. resolution. Unit of
this parameter is set by
unit
parameter.
toFF
- turn off delay time, the relay is turned off with delay equal
toFF
if the input value
exceeds appropriate
border value
(defined with
threshold
and
hysteresis
), at
least
toFF
time.
toFF
range 0 ÷ 99.9, defined with 0.1 sec. resolution. Unit of
this parameter is set by
unit
parameter.
If time when the input signal exceeds some border value is shorter than
t on
or
toFF
time, the relay do not change his state (see paragraph:
CONTROL OF
THE RELAY OUTPUTS
).
unit
- unit of time for
t on
i
toFF
parameters. Can be set on one of two values:
min
- minutes,
SEC
- seconds.
AL
- this parameter defines the relay reaction when some critical situations occurs:
noCH
- relay do not change his state,
on
- relay will be turned on,
oFF
- relay will be turned off.
If parameter
modE
is set to
on
,
oFF
,
in
or
Out
the critical situation
means that allowable measurement range is exceeded.
If parameter
modE
is set to
modb
, the critical situation means
communication delay (when no data is received) longer than
mbtO
parameter
(see description:
rS menu
).
If option
noCH
is selected for
AL
parameter, behaviour of the relay may
depend on
FiLt
parameter
in some cases
. If
FiLt
is set to big value and the
input signal drops, result value of the measure will change slow, causes of
turning on or off relay due to thresholds values. The critical situation is slowly
detected, so it is impossible to predict the relay state in that situations.
If parameter
AL
=
on
, the relay will be turned on in the critical situations,
even if his parameter
modE
=
noAC .
7.3.2.
inPt menu
This menu presets the measurement input:
tYPE
"
- type of the input / sensor. This parameter can be set to values:
Pt 1
- Pt-100 input,
Pt 5
- Pt-500 input,
Pt10
- Pt-1000 input.
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Summary of Contents for SRT-73
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