User manual for flow meter with pulse input SPI-94
Parameters ”
t PrEc
” and ”
t unit
” are available only if total flow counter is used to
control relay output (
“vALUE”
=
”
tot
”). When current flow rate is used to control
relays, the unit and precision of the thresholds and hysteresis are defined by
parameters
“F unit”
,
“Ftunit”
and
“F PrEc”
of menu
”Flouu”
.
“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.
•
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.
“t oFF”
- turn off delay time, the relay is turned off with delay equal
“t oFF”
if
the input value
exceeds appropriate
border value
(defined with
threshold
and
hysteresis
), at
least
“t oFF”
time.
“t oFF”
range 0 ÷ 99.9, defined with 0.1 sec. resolution. Unit of
this parameter is set by
“unit”
parameter.
26
i
