Ariens Path-Pro 136E User Manual download pdf (Page 11)

Chapter

How to Use the Keys and Displays

This chapter will show you the Series 920 front panel, and the function of each

display, key and LED. Figures 6

and 7

explain the 920 front panel.

Display, Key and LED-Location and Explanation

The

Watlow

Series 920 Ramping Control has two main displays, the process

ACTUAL display at the top of the unit, and the smaller alphanumeric display

below. You set up the Series 920s characteristics in the alphanumeric display

window. On the right of the ACTUAL display there is a red

LED and a red

°C

LED, indicating the temperature scale ACTUAL is displaying. If neither of

these

LEDs

are showing, the ACTUAL display is showing Process Variable

Units

(PVU’s).

The 920 has five touch-membrane keys along the bottom edge of the front

panel: (from left to right) a MODE key, an UP key, a DOWN key, an ENTER

key, and a RUN/HOLD key.

The MODE key steps the processor through the entry prompts.

The UP and DOWN keys increase and decrease or change values in the

alphanumeric display. A single touch to either of these keys will change the

least significant digit by one. Continuous pressure will change the value in the

alphanumeric display at an increased rate. The ENTER key places the value,

in the alphanumeric display, into the processor’s memory.

An alphanumeric display value will flash (when changed with the UP or DOWN

keys) until you press ENTER, placing the value in the processor

memory.

The RUN/HOLD key will execute or halt a program.

Front Panel Information

Use Figures 6 and 7 to assist you in learning the locations and functions of the

front panel components.

How

to Use Keys and Displays, Chapter 2

WATLOW Series 920

User’s

Manual

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Ariens Path-Pro 136E User Manual Page 11