User manual - FLOW METER SPI-73
If parameter
“modE”
is set to
“on”
,
“oFF”
,
“in”
or
“Out”
the “critical situation”
means that
permissible input frequency
is exceeded.
If parameter
“modE”
is set to
“modbuS”
, the “critical situation” means
communication delay (when no data is received) longer than
“mbtimE”
parameter
(see description:
“rS-485” menu
).
7.3.2.
“inPUt” menu
This menu contains options of pulse input configuration:
“PulSEL”
- flow factor (quantity of pulses per litre). This parameter can be set in range
0.00 - 9999.99 pulses/unit.
Value 0.00 is interpreted as 10 000.00
pulses/unit.
Proper settings of this parameter is essential to device's operation.
“FrEq”
- maximum permitted frequency of pulses delivered to the input. This parameter
is expressed in Hz. And can be set to one of all values showed in Tab.7.1
Minimum
permitted
duration time of Low and High states are related to every
value of
“FrEq”
parameter. If particular state is shorter than showed in Tab.7.1,
it is interpreted as disturbance and ignored.
Parameter
”FrEq” (Hz)
Minimum duration
of low and high states
Permitted duty cycle
for max. frequency
„10”
5 ms
5%-95%
„15”
3,4 ms
5%-95%
„20”
2,5 ms
5%-95%
„30”
1,7 ms
5%-95%
„40”
1,3 ms
5%-95%
„50”
1 ms
5%-95%
„100”
500
m
s
5%-95%
„300”
167
m
s
5%-95%
„1 000”
50
m
s
5%-95%
„3 000”
33
m
s
10%-90%
„10 000”
33
m
s
33%-66%
Tab.7.1.Allowable settings of
„FrEq”
parameter, and
related with them minimum durations of logical states
26
i
Summary of Contents for SPI-73
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