Emerson 51-DO-04 Activate Process, Alarm 1 control, Alarm 1 setup, Alarm Low, Setpoint 0.000 ppm

MODEL DO-03/04	SECTION 5.0
	SOFTWARE CONFIGURATION

5.6 CHANGING ALARM PARAMETERS (continued)

Activate : Process

ExitEdit

Alarm 1 control

Alarm 1 setup

Alarm 2 control

ExitEnter

Alarm : Low

Setpoint: 0.000 ppm

Hysteresis: 0.000 ppm

ExitEdit

c.To change the activation method, press Edit (F4). Use the ￿ key to scroll through the choices, "Process" or "Temperature". "Process" means dissolved oxygen. Press Save (F4) to store the selection.

d.The display returns to the "Activate: Process" screen. Press Exit (F1) until the screen in Step 5 appears.

8.Alarm setup for normal alarms:

a.Move the cursor to the desired alarm setup and press Enter (F4).

b.Use the ￿ and ￿ keys to move the cursor to the desired param- eter. Press Edit (F4). Use the arrow keys to change the setting to the desired value and press Save (F4) to store the value. See the Figures 5-2 and 5-3 for an explanation of terms: low alarm, high alarm, hysteresis, and delay. See Table 5-1 for allowed values and limits.

Relay default determines how the relay will operate if there is a fault or the analyzer is in hold. Alarms can be forced on (Close), off (Open), or remain unchanged (None).

FIGURE 5-2. Low Alarm

FIGURE 5-3. High Alarm

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