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Idiomas disponibles
Idiomas disponibles
7.4.2. Control parameters – XP-, TN-, TV- INTERNAL
Setting range: 0.1 ... 99.9
Setting range: 3 ...9999
Setting range: 0 ... 999
Optimum setting
Inappropriate settings may produce the following heat-up curves:
Xp too low
Xp too high or Tv too high
Menu functions
In most cases the control parameters preset in the factory are adequate for
achieving an optimum temperature sequence.
The control parameters allow adjustment to special control processes..
Proportional range >Xp<
The proportional range is the range below the setpoint in which the control
circuit reduces the heating capacity from 100 % to 0 %
Reset time >Tn< (Integral component)
Compensation of the remaining control deviation due to proportional regulation.
An insufficient reset time may cause instabilities. Excessive reset times will
result in unnecessary prolongation of compensation of the control difference.
Lead time >Tv< (Differential component)
The differential component reduces the transient time. An insufficient lead time
will prolong the time required for compensation of disturbance effects and
cause high overshooting during run-up. An excessive lead time could cause
instabilities (oscillations)
Optimization instructions for the PID control parameters
Control parameters XP-, TN-, TV- INTERNAL
The heat-up curve reveals possible faulty settings of the control
parameter.
Tv/Tn too high or Xp too high
82
Tv/Tn too low
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