User manual - METER SRT-457
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.
bEEP menu
This menu contains options connected with acoustic signal :
"
AL
- if this parameter is set to
on
, any critical situation causes by acoustic signal
"
r1
- if this parameter is set to
on
, activation of relay
R1
causes by acoustic signal
"
r2
"
- if this parameter is set to
on
, activation of LED
R2
causes by acoustic signal
"
r3
"
- if this parameter is set to
on
, activation of LED
R3
causes by acoustic signal
"
r4
"
- if this parameter is set to
on
, activation of LED
R4
causes by acoustic signal
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