4-13
Level Controller Configuration
Alpha Alpha is the loop performance factor used to adjust the loop response.
A lower value results in more aggressive control while a higher value
results in more conservative control. Once the system has been
autotuned, the Alpha parameter may be revised and new tuning
parameters will be calculated.
Factory Default: 3.0
Valid Range: 0.5 to 10.0
Cycles This selection sets the number of open/close cycles to perform during
tuning after the initial close cycle. Multiple cycles can average out noise
due to process demand changes during the autotune procedure.
Factory Default: 1
Valid Range: 1, 2, 3
Tuning Output Min (Valve) This selection sets the lower output value used when the autotuner
opens and closes the valve.
Factory Default: 0%
Valid Range: –0.625% to 105%
Tuning Output Max (Valve) This selection sets the upper output value used when the autotuner
opens and closes the valve.
Factory Default: 0%
Valid Range: –0.625% to 105%
Tuning Lo Limit (Level) The level low limit is how far the level will travel on the low side during
tuning as measured from the bottom of the tank.
This value is entered in selected level units (see page 4-2).
Factory Default: 0 in.
Valid Range: Level LRL to Tuning Hi Limit
Tuning Hi Limit (Level) The level high limit is how far the level will travel on the high side
during tuning as measured from the bottom of the tank.
This value is entered in selected level units (see page 4-2).
Factory Default: 0 in.
Valid Range: Tuning Lo Limit to level URL
HART Comm.
6, 2, 4, 3, 3
HART Comm.
6, 2, 4, 3, 8
HART Comm.
6, 2, 4, 3, 7
HART Comm.
6, 2, 4, 3, 6
HART Comm.
6, 2, 4, 3, 2
HART Comm.
6, 2, 4, 3, 1
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