The Interface Solution Experts
15
SPA
Site-Programmable Volt &
Milliamp Limit Alarm Trips
Scaling Input —
“Smart Scaling” the HLPRG
This feature of the HLPRG SPA allows users 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.
With Smart Scaling, the LCD and menus are used
to enter the value for zero and full scale, in either
milliamps or volts.
Once these two input parameters are set, the HLPRG
automatically routes the user to the next appropriate
menu; Scale the Display, for Custom Mode users;
Scale the Output, for Linear Mode users (with AO-
equipped HLPRG SPAs); or Configure Alarms, for
Linear Mode users whose units are not equipped with
analog output.
Figure 9. shows the Smart Scaling menu.
1. From the readout of “SCLE INPT” on the Main
Menu, press SELECT.
2. Use the arrow buttons to “scroll” from “SET
ZERO” to “SET FULL”, or to “EXIT SCLE” to
abort Smart Scaling and return to the Main
Menu.
3. When the desired parameter shows on the
LCD, press SELECT.
The LCD will show the engineering units
selected in Configure Options menu,
discussed previously in this section.
4. Use the arrow buttons to set the display to
show the known zero or full scale input from
the intended application. Holding the push
button in accelerates the display change.
5. When the LCD shows the correct setting, press
SELECT.
6. If “EXIT SCLE” is showing and both zero and
full scale have not been set, go to step 2.
7. If both the zero input and full scale input
parameters have been entered into the SPA
memory, go to step 9.
8. Go to step 4.
9. Use the arrow buttons to “scroll” to “EXIT
SCLE” and press SELECT.
If the SPA Custom Mode was selected in the
Configure Options menu, the next menu shown
will be Scale the Display, since in Custom
Mode the input, display, and output (if present)
are independent.
If the SPA Linear Mode was selected in the
Configure Options menu, the next menu shown
will either be Scale Analog Output, for units
equipped with an AO option, or Configure
Alarms.
