40
with one digit plus the following
decimal point in the total display
flashing. Press the
Up
or
Down
button until the second least
significant digit and following decimal
point are flashing.
Transfer control to lower rate display
by operating the
P
button. Press the
Up
or
Down
button until the right hand
digit is flashing which will result in no
decimal point being displayed.
Finally press
E
to return to the 'd.P.’
prompt in the main menu.
Step 8
Enter the total scale factor
In this example the proximity
detectors produce fifteen pulses per
one metre movement of the cable.
The position display is required in
metres so the total (position) scale
factor ‘SCALE-t’ should be set to 15.0
(may be entered as 15)
Select ‘SCALE-t’ from the main menu
and press
P
which will show the
current figure with one digit flashing.
To position the decimal point, operate
the
P
push-button to move the
flashing digit to the second least
significant digit. Pressing the
Up
and
Down
buttons simultaneously will then
fix the decimal point in front of the
least significant digit.
Using the
Up
and
Down
buttons to
adjust each digit in turn and the
P
button to transfer control between
digits, enter 15.0 (may be entered as
15). Finally return to the 'SCALE-t'
prompt in the main menu by pressing
E
.
Step 9
Enter the rate scale factor
In this example the proximity
detectors produce fifteen pulses per
one metre movement of the cable.
The rate display is required in metres
per second so the rate (speed) scale
factor SCALE-r should be set to 15.0
(may be entered as 15)
Select ‘SCALE-r’ from the main menu
and press
P
which will show the
current figure with one digit flashing.
To position the decimal point, operate
the
P
push-button to move the
flashing digit to the second least
significant digit. Pressing the
Up
and
Down
buttons simultaneously will then
fix the decimal point in front of the
least significant digit.
Using the
Up
and
Down
buttons to
adjust each digit in turn and the
P
button to transfer control between
digits, enter 15.0 (may be entered as
15). Finally return to the 'SCALE-r'
prompt in the main menu by pressing
E
.
Step 10 Set the display timebase
Select ‘t-bASE’ from the main menu
and press
P
to show the current
setting. In this example the rate
display (speed) is required in metres
per second. Using the
Up
or
Down
button scroll through the three options
and select ‘tb-1’. Return to the ‘t-
bASE’ prompt in the main menu by
pressing
E
.
Step 11 Adjust the rate display filter
The rate display filter parameters
should be adjusted experimentally
after installation to provide a stable
rate display with an acceptable step
response.
During commissioning it is
recommend that initially the second
digit of the rate parameters is set to 0
(step response off) and the first digit
(amount of filtering) is adjusted to
provide acceptable rate display
stability. The second digit should then
be increased until acceptable rate
display stability is once again
achieved.
To adjust the filter parameters select
‘FILtEr’ from the main menu and
press
P
to reveal the current setting.
The first digit will be flashing and may
be adjusted using the
Up
or
Down
button. The
P
button will transfer
control to the second digit. When
both are set as required, return to the
‘FILtEr’ prompt in the main menu by
pressing
E
.
Note:
While adjusting the filter, the rate is
shown on the lower display so that
stability can be assessed.
