Siemens Simatic S7-1500/ET 200MP, Системное руководство

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System overview
3.8 Technology functions
Automation system
System Manual, 12/2017, A5E03461182-AE
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3.8.2 PID Control
PID compact controllers are integrated as standard in all S7-1500 CPUs. In your plant, the
PID controller adjusts a physical setpoint and stabilizes it against interferences at the same
time. Depending on your plant, you can use different PID controllers. All controllers support
the following functions:
● Manageable configuration screens
● Automatic determination of the controller parameters
● Commissioning screens with integrated trace
PID controller versions
PID controllers Description
PID Compact Continuous PID controller
PID 3step Step controller for integrating actuators
PID Temp Temperature controller for heating and cooling with two separate actuators
Example: PID Control optimizes the drying process
Automation task:
Development of a temperature control system for drying panes of glass in the production of
mirrors
Feature:
The drying process is a critical phase in silvering mirrors. It is decisive for optimum product
quality. During the silvering process, the glass panes are treated with chemical solutions and
then dried in a pre-heated oven. Temperature control plays a key role in the drying process.
Solution:
A PID controller controls the temperature in the drying oven. The filament of each infrared
lamp in the oven is controlled separately remotely, up to now this could only be controlled
manually.
Benefits
The integrated controller PID Control of the SIMATIC S7-1500 CPUs offer you the following
advantages:
● high-quality end product due to optimum control performance
● high flexibility in the drying oven (see example)
● time saving thanks to automatic control parameter optimization for optimum control
performance and simple commissioning