2 module 2 - u, Nput, Ront – Red Lion PAXDP User Manual
Page 11: Anel, Unction, Arameters
11
INPUT VALUE FOR SCALING POINT 1
For Key-in (
), enter the known first Input Value by using the arrow keys.
(The Input Range selection sets up the decimal location for the Input Value.)
For Apply (
), apply the input signal to the meter, adjust the signal source
externally until the desired Input Value appears. In either method, press the
PAR key to enter the value being displayed. In the
style, the
RST key can
be pressed to advance the display past the
value or other input value
without storing it. This is useful for application scaling of the second scaling
point (i.e. when the tank is full), or some other point in multipoint applications.
to
DISPLAY VALUE FOR SCALING POINT 1*
to
Enter the first coordinating Display Value by using the arrow keys. This is
the same for
and
scaling styles. The decimal point follows the
selection. For Square Root Extraction Input Range, the Display 1 value must
be zero.
INPUT VALUE FOR SCALING POINT 2
to
For Key-in (
), enter the known second Input Value by using the arrow
keys. For Apply (
), adjust the signal source externally until the next
desired Input Value appears. (Follow the same procedure if using more than 2
scaling points.)
DISPLAY VALUE FOR SCALING POINT 2*
to
General Notes on Scaling
1. Input Values for scaling points should be confined to the limits of the Input
Signal, ie. 4-20 mA or 0-10 VDC.
2. The same Input Value should not correspond to more than one Display Value.
(Example: 20 mA can not equal 0 and 10.)
This is referred to as readout jumps (vertical scaled segments).
3. The same Display Value can correspond to more than one Input Value.
(Example: 0 mA and 20 mA can equal 10.)
This is referred to as readout dead zones (horizontal scaled segments).
4. The maximum scaled Display Value spread between range maximum and
minimum is limited to 65,535. For example using +20 mA range the
maximum +20 mA can be scaled to is 32,767 with 0 mA being 0 and Display
Rounding of 1. (Decimal points are ignored.) The other half of 65,535 is for
the lower half of the range 0 to -20 mA even if it is not used. With Display
Rounding of 2, +20 mA can be scaled for 65,535 (32,767 x 2) but with even
Input Display values shown.
5. For input levels beyond the first programmed Input Value, the meter extends
the Display Value by calculating the slope from the first two coordinate pairs
(
/
&
/
). If
= 4 mA and
= 0, then 0 mA
would be some negative Display Value. This could be prevented by making
= 0 mA /
= 0,
= 4 mA /
= 0, with
= 20 mA /
= the desired high Display Value. The calculations stop at the limits of
the Input Range Jumper position.
6. For input levels beyond the last programmed Input Value, the meter extends
the Display Value by calculating the slope from the last two sequential
coordinate pairs. If three coordinate pair scaling points were entered, then the
Display Value calculation would be between
/
&
/
.
The calculations stop at the limits of the Signal Input.
Enter the second coordinating Display Value by using the arrow keys. This
is the same for
and
scaling styles. (Follow the same procedure if
using more than 2 scaling points.)
2-FNC
USr-2
USr-1
Sc-F1
F1
F2
rSt
Sc-F2
PAR
Pro
FUNCTION KEYS
USER INPUTS
6.2 mOdule 2 - u
ser
i
npuT
and
f
rOnT
p
anel
f
unCTiOn
K
ey
p
arameTers
(
)
PARAMETER MENU
The two user inputs are individually programmable to perform specific meter
control functions. While in the Display Mode or Program Mode, the function is
executed the instant the user input transitions to the active state.
The front panel function keys are also individually programmable to perform
specific meter control functions. While in the Display Mode or when viewing
meter values in Quick Programming mode, the primary function is executed the
instant the key is pressed. Holding the function key for three seconds executes
a secondary function. It is possible to program a secondary function without a
primary function.
In most cases, if more than one user input and/or function key is programmed
for the same function, the maintained (level trigger) actions will be performed
while at least one of those user inputs or function keys are activated. The
momentary (edge trigger) actions will be performed every time any of those
user inputs or function keys transition to the active state.
Note:
In the following explanations, not all selections are available for both
user inputs and front panel function keys. Alternating displays are shown
with each selection. Those selections showing both displays are available for
both. If a display is not shown, it is not available for that selection.
will represent both user inputs.
will represent all five function keys.
NO FUNCTION
No function is performed if activated. This is the factory setting for all user
inputs and function keys. No function can be selected without affecting basic
start-up.
PROGRAMMING MODE LOCK-OUT
Programming Mode is locked-out, as long as activated
(maintained action). A security code can be configured to
allow programming access during lock-out.
*
The decimal point position is dependent on the selection made in the
“Display Decimal Point” parameter.