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MODEL DO-03/04 SECTION 5.0
SOFTWARE CONFIGURATION
5.6 CHANGING 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
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.
Timer : Disable
Timer: Time activated
Interval: 24.0 hr
Exit Edit
Alarm 4 setup
Feed limit timer
Interval timer
Exit Enter
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.