Section 5
SEQUENCING TIMERS
16
5.1.1 EXAMPLE 1– UNLOAD OPERATION
Suppose there are three machines running and loaded, the recovery timer is set to 10 sec-
onds and the unload pressure is set at 110 on all three machines. The sequence unload
pressure will be 108
Machine Status
1 Full Load
2 Full Load
3 Trim
If the pressure rises above the sequence unload pressure (108) the trim machine will unload
and the next machine in sequence will trim.
Machine
Status
1 Full Load
2 Trim
3 Unloaded
The new trim machine will wait for 10 seconds before unloading if the pressure stays at 109
or 110. If the pressure goes below 109 unloading will be unnecessary. If the pressure goes
above 110 the machine will unload immediately (regardless of the recovery timer).
5.1.2 EXAMPLE 2– LOAD OPERATION
Suppose there are three machines running and with two unloaded and one in trim, the
recovery timer is set to 10 seconds and the load pressure is set at 100 on all three
machines. The sequencing load pressure will be 102.
Machine
Status
1 Trim
2 Unloaded (Next machine in sequence)
3 Unloaded
If the pressure drops below the sequence load pressure (102) the next machine in sequence
(2) will load and be the trim machine, and the previously trimming machine (1) will go to full
load.
Machine
Status
1 Full Load
2 Trim
3 Unloaded (Next machine in sequence)
The next machine in sequence will wait for 10 seconds before loading if the pressure stays
at 101 or 100. If the pressure goes above 101 loading will be unnecessary. If the pressure
goes below 100 the machine will load immediately (regardless of the recovery timer).
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