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2 setup loop input, 2 setup loop input -19 – Watlow 12LS Controller User Manual

Page 52

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4-19

4.5.2 SETUP LOOP INPUT

Press YES at this prompt to access menus to change parameters related to the channel input including :

o Input type [thermocouple or other]
o Engineering units to be displayed
o Scaling

4.5.2.1 EDIT INPUT TYPE

This menu allows configuration of the input sensor as either a thermocouple or a LINEAR input. Thermocouple types
include J, K, T, S, R and B. Also available is a type called SKIP for unused channels. It is not necessary to program
unused channels as SKIP types but the SCANNING display will skip that channel when cycling through the channels.
This allows the SCANNING and BAR GRAPH displays to show only those channels that are in use. The display
appears as :

|----------------|
¦LL INPUT ¦
¦ TYPE ? xx ¦
|----------------|

Press YES to select the menu or NO to advance to the next menu.

Press UP and DOWN to cycle through the available input type choices.

Press ENTER to store the input type or press BACK to return to the SETUP LOOP INPUT main menu prompt.

4.5.2.2 EDIT ENGINEERING UNITS

This menu allows a three character description of the engineering units to be entered. Thermocouples can only be °F or
°C. For linear inputs the user may choose any available character (see Table 4-3) for each of the character positions.
For example, GPM or PH. Blank spaces appear with a dot (.) for editing purposes only - just to let the user know
which character he is editing. Character editing proceeds left to right one character at a time.

|--------------------------------------------------------------|
¦ TABLE 4-3. CHARACTER SET FOR UNITS ¦
|--------------------------------------------------------------¦
¦ Thermocouples ¦ °F or °C ¦
¦ ¦ ¦
¦ Linear ¦ 0 through 9 ¦
¦ ¦ A through Z ¦
¦ ¦ %, /, °, SPACE ¦
|--------------------------------------------------------------|