Siemens SINAMICS Series Operating Instructions Manual page 28

Wizards
● Motor
● Pump
● Motor temperature sensor (optional)
● Level sensor (dry run protection - optional).
Fixed Closed Loop Pump
The closed-loop application allows for the fluid in a tank to be directly monitored using the
PID control function.
The system comprises the following components:
● Control Unit
● Power Module
● Motor
● Pump
● Feedback sensor
● Level sensor (dry run protection - optional)
● Motor temperature sensor (optional).
Boost
At low output frequencies, the V/f characteristics give only a low output voltage. This means
that the output voltage can be too low in order to:
● Implement the magnetization of an induction motor
● to hold the load
● to equalize losses in the system
● to provide a breakaway, acceleration or braking torque.
The output voltage can be increased (boosted) in the Inverter using the boost function.
The Boost settings wizard guide the user through the correct setting of the boost function.
PID Wizard
Fixed Closed Loop control is widely used in industrial applications to control a wide variety of
processes. A simple closed-loop control uses a feedback signal from the process (such as,
temperature, pressure and speed) and a desired value or setpoint. The control system
compares the two values and derives an error signal. The error signal is used to control the
Inverter and motor to reduce the error.
The error signal processing can be very complex because of the delays in the system. The
error signal is processed using a Proportional and Integral differential (PID) controller whose
parameters can be adjusted to optimize the performance and stability of the system.
The PID controller wizard guide the user through the PID setting-up process.
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Operating Instructions, 04/2015, FW V1.5.1, A5E00110011C AB
Intelligent Operator Panel (IOP)