Moore Industries SPA2 - Scaling the Input

www.miinet.comMoore Industries-International, Inc.
- 35 -
User’s Manual
224-790-00K
May 2018
Programmable Limit Alarm Trips
SPA
2
SECTION 4
Scaling the Input
Figure 4.7. gives an overview of the Input Scaling menu.
Scaling allows you to take your PV (Process Variable) reading and manipulate it to a more
customized display range. PV is the unit read after selecting your input type. For example, choosing
a Current input would then produce a PV displayed in mA.
Also known as “Smart Ranging”, scaling of the SPA
2
allows the user to set the zero and full scale
values of the input from the intended application, without having to connect the unit to any calibration
equipment.
Continue with the “SCALE INPUT” if you enabled scaling in the previous menu. To proceed, follow
the steps below.
1. At the “SCALE INPUT” display, press SELECT.
2. Press SELECT at the “INPUT ZERO” parameter and enter the value you want displayed when
your input is at zero. Press SELECT.
3. Press SELECT at the “INPUT FULL” screen. Enter the value you wish displayed when your
input is at full scale. Press SELECT.
If you selected “SCALE OFF” in the “CONFG OPTNS” menu, the menu skips to Step 6. If you
selected “SCALE ON”, proceed to Step 4.
4. Next, “SCALE ZERO” is displayed. Use the UP and DOWN buttons to adjust your scaled zero
value. This is the value that will be displayed when you are at the zero end of your display
range. Press SELECT.
5. “SCALE FULL” appears. Press SELECT to enter the menu. Enter the value you wish as
your full scaled range– the value displayed when you are at the full end of your range. Press
SELECT.
6. “EXIT SCALE” appears. If all scaling parameters have been set, press SELECT. The next
menu selection to appear is “TRIM INPUT”.