Emerson 51-DO-03, DO-04 Section Display and Operation, KEY Functions and Control, Alarm Status

MODEL DO-03/04	SECTION 4.0
	DISPLAY AND OPERATION

SECTION 4.0

DISPLAY AND OPERATION

4.1 DISPLAY

Figure 4-1 shows the main display.

1.00ppm

26.2°C.	12.00 mA
ALI: 0.50	I: 3200 nA

FIGURE 4-1. Main Display Screen

The concentration of oxygen is displayed continuously in large numerals. The temperature and output current are displayed on the second line. The third line can be config- ured by the user. In the example the third line shows the alarm 1 setpoint and the sensor current.

3.Press Enter (F4) to access a sub-menu or an item in a sub-menu.

4.To change a number or a setting press Edit (F4).

The display will change to show the cursor on the first digit or on a + or - sign. Use the ￿ and ￿ keys

to increase or decrease a digit or to toggle the + and - signs. Use the ￿ and ￿ keys to move the cursor left and right.

5.If an entire number or a word is highlighted, use the ￿ and ￿ keys to scroll through the list of choices.

6.To store a number or setting in memory, press Save (F4).

7.To leave without storing changes, press Esc (F3).

8.To leave and return to the previous screen, press Exit (F1).

9.To end a calibration step and leave the previous calibration in place, press Abort (F1).

10.Occasionally, information screens will appear. To leave the information screen and move to the next screen press Cont (F3).

4.2 KEY FUNCTIONS AND CONTROL

The keys labeled F1, F2, F3, and F4 are multi-function. The function appears in the main display just above the key. For example, F1 is usually labeled Exit and F4 may be labeled Edit, Save, or Enter.

1.To enter the main menu, press any key.

2.Use the ￿ and ￿ keys to move the cursor to the desired sub-menu. The position of the cursor is shown in reverse video.

NOTE

When the last item of a menu has been reached, the cursor will be on the third line of the display. If the cursor is on the second line of the display more items remain. Continue pressing the ￿ key.

4.3 ALARM STATUS

Green LEDs (labeled 1, 2, and 3) indicate when alarm relays 1, 2, and 3 are energized. The fourth relay indi- cates a fault condition. When a fault occurs, the red LED (labeled FAIL) lights up, a descriptive error mes- sage appears, and the outputs and alarm relays act as described in Section 5.5 and Section 5.6 under fault value.

The red LED also indicates when the interval timer rou- tine is activated and when the time limit has been reached on a feed limit timer. For more information on these subjects, see Section 5.6.

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