Ropex CIRUS UPT-6400 - 4 Description of Project; Functioning; Application; Properties

4 | Description of project
Page 12 of 104 CIRUS
®
UPT-6400 VERSION 1 | EN-US
4 Description of project
4.1 Functioning
The temperature controller CIRUS
®
UPT-6400 works in the control loop like this:
The resistance of the heating element changes along with the temperature of the heat-
ing element.
The resistance of the heating element is determined by measuring the current and
voltage. This value is then used to calculate and display the actual temperature of the
heating element, as well as to compare it to the specified setpoint.
The measurement is taken at a 50Hz grid, corresponding to 50times/sec or a 60Hz
grid, corresponding to 60 times/sec.
When the measurements deviate from the setpoint, the pulse transformer primary volt-
age is adjusted applying the phase angle principle. The resulting change of current in
the heating element causes a temperature change, thus leading to a change in resis-
tance. The temperature controller CIRUS
®
UPT-6400 measures and evaluates the
change in resistance. Based on the adjustment and the setpoint, the temperature con-
troller CIRUS
®
UPT-6400 adjusts the control variables.
Even the smallest thermal loads are detected by the heating element and can be
quickly and precisely corrected. The measurement of purely electrical variables and
the high measuring rate create a highly dynamic, thermo-electrical control loop. The
principle of primary transformer control has proven particularly beneficial, as it enables
a wide range of secondary current with only minimal power dissipation. This facilitates
optimal adaptation to the load and to the desired dynamic, even when the device is
compact.
4.2 Application
The temperature controller CIRUS
®
UPT-6400 is part of the series6000.
The temperature controller CIRUS
®
UPT-6400 shall be used only to regulate the tem-
perature of heating elements used to seal and cut thermoplastics.
4.3 Properties
The temperature controller has the following properties:
• Calibration of the heating elements through AUTOCAL, the automatic zero-point
setting
• Eight channels permit switching of the calibration parameters during tool change
• Control dynamics through AUTOTUNE, automatic adjustment to the controlled
system
• Flexibility due to AUTORANGE The AUTORANGE feature covers a secondary
voltage range of 0.4 V to 120V and a current range of 30 A to 500 A
• Automatic adjustment of the line frequency
• Wide voltage range for flexible use (Limits can be found on the ID plate)
• System diagnosis and process visualization with the ROPEXvisual
®
software
• Output for connecting a booster
• Process reliability due to comprehensive options for evaluating parameter data,
e.g.
• Temperature diagnosis
• Heatup timeout