User manual for - FLOW METER SPI-N118
alarm state flow counter displays
”-Hi-”
message, in place of flow result.
•
In all other cases (while frequency and pulses duty cycle gets acceptable values) input
pulses are delivered to internal prescaler. The prescaler (see description of parameter
“PULSEL”
) should be set to value equal to the quantity of pulses per one litre.
Frequency after prescaler is recalculated accordingly to user defined unit (parameters
“F unit”
and
“Ftunit”
), and after that final flow value (in litres or cubic meters per hour,
minute or second) is obtained. This result is displayed on the display and is used to
determine states of relays and current output, additionally the result is accessible via
RS 485 interface as a set of holding registers.
–
If input frequency is in acceptable range but result is longer than 6 digits, warning
message
“-Ov-”
is displayed in place of the result. In that case parameters
“
F unit
”
,
“Ftunit”
and
“F PrEc”
should be corrected to obtain proper result.
–
While
time per one unit of flow is displayed
(parameter
“F or P”
= “
PEriod
”):
•
If flow value equals 0, then 0 value is displayed.
•
If value of period is to high to be fitted on 6 digits, message
“-OvLd-”
(Overload) is displayed instead of the result.
•
If flow value is different than 0 but value of period is to small to be fitted on
6 digits, message
“-UnLd-”
(Underload) is displayed instead of the result.
Total flow is displayed in units defined by parameter
“t unit”
(L or m
3
), with resolution
defined by parameter
“t PrEc”
(max 3 digits after decimal point). If total flow counter
overflows, warning
“tot ov”
is displayed alternatively with maximum counter value. Total flow
counter can be zeroed using
“Clrtot”
option of
“totAL”
submenu, using
button (press
and hold by at least 2 sec.), electrically via
total flow clearing input
or via RS-485 interface by
writing of value 0000h to any of total flow counter result registers.
Zeroing by
button can be activated using „
m CLr
” option of
“totAL”
submenu.
Zeroing via
total flow clearing input
can be activated using „
E CLr
” option of
“totAL”
submenu (see page 31).
Batching counter value is displayed in units defined by parameter
“b unit”
(L or m
3
), with
resolution defined by parameter
“b PrEc”
(max 3 digits after decimal point). If batcher counter
overflows, warning
“bAt ov”
is displayed alternatively with maximum counter value. Batching
counter can be zeroed using
“CLrbAt”
option of
“bAtCH”
submenu, using
button (press
and hold by at least 2 sec.), electrically via
batcher clearing input
or via RS-485 interface by
writing of value 0000h to any of batcher counter result registers.
Zeroing by
button can be activated using „
m CLr
” option of
“bAtCH”
submenu.
Zeroing via
batcher
clearing input
can be activated using „
E CLr
” option of
“bAtCH”
submenu (see page 30).
Switching between current flow rate, total flow counter and batcher counter can be
done by pressing [
] button
. Kind of displayed value is signalised by
“
Σ
”
LED. It lights,
while total flow is displayed. If batcher counter is displayed then
“
Σ
”
LED is pulsing.
Batching counter can be displayed while batcher mode only (set „
SourCE
”=”
bAt
” in
„rELAy1”
submenu).
Functions of
[^]
and
[v]
buttons depend on kind of presently displayed value:
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