10
6.3 MODULE 4 - Rate Input Parameters (
93!%&
)
PARAMETER MENU
The Low Update Time is the minimum amount of time between display
updates for the Rate display. Values of 0.1 and 0.2 seconds will update the
display correctly but may cause the display to appear unsteady. The factory
setting of 1.0 will update the display every second minimum.
LOW UPDATE TIME (DISPLAY UPDATE) *
!
"
/10
#*37+%
*
Factory Setting can be used without affecting basic start-up.
Module 4 is the programming for the Rate parameters. The Rate value is
shown with an annunciator of ‘
!
’ in the Display Mode.
01/
to
;;1;
seconds
The High Update Time is the maximum amount of time before the Rate
display is forced to zero. The High Update Time
must
be higher than the Low
Update Time and higher than the time between pulses of the slowest readable
speed. (For more explanation, refer to Input Frequency Calculation.) The
factory setting of 2.0, will force the display to zero for speeds below 0.5 Hz or
a pulse every 2 seconds.
HIGH UPDATE TIME (DISPLAY ZERO) *
!
"
210
"'37+%
012
to
;;1;
seconds
Rounding values other than one round the Rate display to the nearest
increment selected (e.g. rounding of ‘5’ causes 122 to round to 120 and 123 to
round to 125). Rounding starts at the least significant digit of the Rate display.
RATE DISPLAY ROUND *
!
"
/
!*7(+
The Low Cut Out value forces the Rate display to zero when the Rate display
falls below the value entered.
LOW CUT OUT *
!
"
0
#*57%
0
to
;;;;;;
When the Rate value is above the present Maximum rate value for the
entered amount of time, the meter will capture that Rate value as the new
Maximum value. A delay time helps to avoid false captures of sudden short
spikes. The Maximum rate value is shown with an annunciator of ‘
"
’ in the
display and will continue to function independent of being displayed.
MAXIMUM CAPTURE DELAY TIME *
!
"
210
"'3%
010
to
;;;1;
seconds
When the Rate value is below the present Minimum rate value for the entered
amount of time, the meter will capture that Rate value as the new Minimum
value. A delay time helps to avoid false captures of sudden short spikes. The
Minimum rate value is shown with an annunciator of ‘
#
’ in the display and will
continue to function independent of being displayed.
MINIMUM CAPTURE DELAY TIME *
!
"
210
#*3%
010
to
;;;1;
seconds
This selects the decimal point position for Rate, Minimum and Maximum
rate displays and any setpoint value assigned to these displays. This parameter
does not affect rate scaling calculations.
RATE DECIMAL POSITION
!
"
0
!%& +,
Enter the Rate Scaling Display value that corresponds to the Rate Scaling
Input value. (Details on Rate scaling are explained at the end of this section.)
RATE SCALING DISPLAY
!
"
/000
!%&+$,
/
to
;;;;;
Applied Method:
Apply an external rate signal to the appropriate input terminals. Press and
hold the
F1
and
F2
keys at the same time. The applied input frequency (in Hz)
will appear on the display. (To verify correct reading wait for at least the length
of the Low Update Time. Then press and hold the
F1
and
F2
keys at the same
time again. The new value should be ± 0.1% of the previous entered value.)
Press
PAR
to enter the displayed frequency as the Rate Scaling Input. To
prevent the displayed value from being entered, press
DSP
. This will take the
meter out of Programming Mode and the previous Rate Scaling Input value will
remain. (Details on Rate scaling are explained at the end of this section.)
RATE SCALING INPUT
!
"
/00010
!%&'(,
01/
to
;;;;;1;
Hz
0
0100
010000
010
01000
/
<
/00
20
2
/0
<0
Key-in Method:
Enter the Rate Scaling Input value that corresponds to the entered Rate
Scaling Display value by pressing the
F1
or
F2
keys. This value is always in
pulses per second (Hz). (Details on Rate scaling are explained at the end of this
section.)
