System description
Version 2
UPT-6010
Seite 7
4
System description
Sample depiction
The basic design of the overall system is shown in the diagram above.
CIRUS heating elements, and in particular UPT heating elements, are high-performance systems which operate
efficiently and reliably providing all the components in the control loop are optimally tuned to one another – and to
the task at hand. Exact compliance with the installation and wiring instructions is essential. The system has been
evolved and optimized by ROPEX GmbH in an intensive development process. Users who follow our technical
recommendations will profit from the unique functionality of this technology, which reduces the customer's effort
for installation, commissioning and maintenance to a minimum.
4.1
Functional principle
The controller determines the resistance of the heating element by measuring the current and voltage at a high
sampling rate (corresponds to the line frequency), compares it with the set point and – if the difference is not 0 –
adjusts the heating current with the help of a phase controlled transformer so that set = actual.