BEKA BA368C, Руководство пользователя

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To check or change the scale factor select 'r
SCALE' from the main menu and press
P to reveal
the existing setting, one digit will be flashing. The
value of the flashing digit can be changed by
pressing the
Up or Down buttons. When this digit
is correct pressing P will transfer control to the next
digit.
To position the decimal point in the scale factor,
move the flashing digit to the left hand side of the
required decimal point position and simultaneously
press the
Up and Down buttons.
When the required scale factor has been entered,
press
E t o store the number and return to the main
menu.
4.5.7 Timebase: ‘t-bASE’
This function multiplies the speed display by 1, 60
or 3,600 to show revolutions per second, minute
or hour.
To check or change the timebase, select 't-bASE'
from the main menu and press
P which will reveal
the current setting. Pressing the Up or Down
button will scroll through the three options:
Display Units
tb-1 for speed / second
tb-60 for speed / minute
tb-3600 for speed / hour
When the required timebase is displayed press E
to enter the selection and return to the main menu.
4.5.8 Display filter: ‘FILtEr’
This digital filter has two independent adjustable
parameters enabling the speed display frequency
response to be tailored for optimum performance.
The filter parameters are controlled by a two digit
number. The first digit defines the amount of
filtering applied to the display as shown below.
First digit Filter time constant
seconds
0X 0
1X 1.3
2X 4.3
3X 6.5
4X 8.7
5X 11.3
6X 15.7
7X 20.9
8X 25.2
9X 31.5
The second digit defines the deviation from the
displayed rate at which the filter will be overridden
and the speed display will move rapidly to the new
value.
Second
digit
Magnitude of step
change which will
produce a rapid
response
X0 Off
X1 1%
X2 2%
X3 4%
X4 8%
X5 12%
X6 16%
X7 24%
X8 32%
X9 64%
By careful adjustment of the two parameters a
stable display with an acceptable step input
response can be obtained for most applications.
During commissioning it is recommend that initially
the second digit is set to 0 (off) and the first digit is
adjusted to provide acceptable speed display
stability. The second digit should then be
increased until the selected step size is greater
than the noise on the speed signal, at which
setting the speed display will again become stable.
These will be the optimum filter parameters for
acceptable speed display stability and a fast
response to a large speed signal change.
To check or change the filter select 'FILtEr' from
the main menu and press
P to reveal the current
settings. Pressing the Up or Down button will
change the flashing digit and P will transfer control
to the second digit. While making adjustments the
filtered speed display is shown on the lower
display so that stability can be assessed. When
set as required, press the
E button to enter the
revised parameters and return to the main menu.
4.5.9 Clip off: ‘CLIP-OFF’
Clip off defines the speed threshold above which
the monitored machine is assumed to be working
and the run-time clock is activated.
To check or change the clip-off threshold select
'CLIP-OFF' from the main menu and press
P which
will reveal the current setting. The threshold is
shown in the units already selected for the speed
display. One digit will be flashing. The value of
the flashing digit may be changed by pressing the
Up or Down buttons. When this digit is correct
pressing P will transfer control to the next digit.
When clip-off is set as required, press the E button
to enter the revised figure and return to the main
programme menu.