30
Valley Classic Control Panel
Operation
Percent Timer
Theory of Operation
The percent timer controls the length of time that the last regular
drive unit runs. Example: if a 60 second percent timer is set to
50%, during the 60 second cycle the last regular drive unit will
run for 30 seconds and then stop for 30 seconds before starting
the next cycle. Percent timers are available with 30, 60 90 or 120
second cycles.
Identifying Percent Timers
There are three different percent timers.
Response to Change
Eagle Solid State Percent Timer Operation
• Machine Stopped: When a change is made to the Eagle solid
state percent timer setting while the machine is stopped, the
timer will finish the previous time cycle before starting the new
percent timer setting when the machine is started.
• Machine Running: When a change is made to the Eagle solid
state percent timer setting during operation, the change is not
immediately recognized by the percent timer. First the percent
timer completes the current cycle at the previous setting, then
after the cycle ends the change is recognized and the percent
timer begins working at the new setting. See Figure 32-1.
ATC and Macromatic Solid State Percent Timer Operation
• Machine Stopped: When a change is made to the percent timer
setting while the machine is stopped, the change is recognized
immediately and when the machine is started the machine
runs at the new percent timer setting.
• Machine Running: When a change is made to the percent timer
setting during operation, the change is recognized immediately
and the timer begins working on the new setting. See Figure
32-2.
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Figure 30-1 1. Eagle Solid State Percent Timer
2. Dial
3. Indicator Light
4. Manufacturers Logo
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Figure 30-2 1. ATC Percent Timer Shown
2. Dial
3. Indicator Light
4. Manufacturers Logo
