User manual for meter with U/I input SRP-77
and
“SEt2”
thresholds, the
lower threshold
” means lower one of
“SEtP”
and
“SEt2”
thresholds.
“out”
- two threshold mode, relay is turned
ON
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
“SEtP”
and
“SEt2”
thresholds, the
lower threshold
” means lower one of
“SEtP”
and
“SEt2”
thresholds.
“modb”
- the relay is controlled via RS-485 interface, independently on the input
signal.
•
LEDs light when relays are closed
, independently of relays' mode.
•
When power supply fail, unit do not store relays state selected by RS-485
interface.
“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
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Содержание Simpact SRP-77
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