Emerson 51-DO-03, 51-DO-04 Alarm 4 setup Feed limit timer, Interval timer setup

MODEL DO-03/04	SECTION 5.0
	SOFTWARE CONFIGURATION

5.6CHANGING ALARM PARAMETERS (continued)

11.Interval timer setup:

Alarm 1, 2, or 3 can be used as an interval timer. The selected relay will open and close at time intervals programmed by the user. The interval timer is useful for automatic cleaning of sensors.

NOTE

Alarm 4 setup

Feed limit timer

Interval timer

ExitEnter

Timer : Disable

Timer: Time activated

Interval: 24.0 hr

The alarm relay used for the interval timer cannot be used for other purposes. When a timer sequence is occurring, both current outputs are placed in hold (even if hold was not enabled) and the other two alarms will be placed in their default states.

a.From the menu header screen (step 6) move the cursor to "Interval timer."

b.With the cursor on "Interval timer", press Enter (F4). Use the ￿ key to scroll through the selections. Use the arrow keys to change settings. Press Save (F4) to store.

Refer to the diagram for definition of terms: interval, repeats, on time, off time, and recovery.

ExitEdit

FIGURE 5-4. Interval Timer

The user must determine the optimum cleaning frequency and duration. Operating the air blast cleaner for 60 seconds every eight (8) hours is a good starting point. Allow a 90-second recov- ery time.

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