Ropex RESISTRON RES-5009, User Manual, Page: 12 / 98

Product description
Page 12 RES-5009 Version 1
5.2 Functional principle
The resistance of the heating element, which changes with temperature, is measured by means of current and
voltage measurement, displayed and compared with the specified setpoint value. Measurements are made 50
times per second in a 50 Hz line, 60 times per second in a 60 Hz line.
The primary voltage of the impulse transformer is adjusted following the leading edge principle if the measured
values deviate from the setpoint value. The related current change in the heating element results in a rise in tem-
perature and change of resistance. This change in resistance measured and evaluated by the RESISTRON
®
Tem-
perature Controller RES-5009. The temperature controller adjusts the control variables according to the change
and the established setpoint.
Even the smallest thermal loads on the heating element are recorded and can be quickly and precisely corrected.
Measurement of pure electric variables, together with the high measurement rate, result in a highly dynamic ther-
moelectric control circuit. The principle of primary-side transformer control proves to be especially advantageous
as it permits a very large secondary current range with low power loss. This permits an optimal adjustment to the
load and thus the desired dynamics with extremely compact device measurements.
5.3 Controller features
The RESISTRON
®
Temperature Controller RES-5009 is equipped with a CAN interface. Through this CAN inter-
face, all functions and parameters can be parameterised by means of the higher level machine controller. In addi-
tion, important controller information is queried and can be processed accordingly. CANopen and the
ROPEX CAN protocol are supported.
The ACTUAL temperature of the heating element is output through the CAN interface and through an analogue
output 0…10 VDC. The real heating element temperature can be visualised on an external display instrument
(e. g. ATR-x) or via the operating unit of the machine controller.
The RESISTRON
®
Temperature Controller RES-5009 has an integrated error diagnosis, which checks both the
external system (heating element, wiring, etc.) and the internal electronics. A differentiated error message is
output through the CAN interface in case of a fault.
To increase operational security and immunity to interference, all CAN signals from the controller and heating cir-
cuit are electrically isolated.
Adjustment for different heating element alloys (alloy A20, Vacodil, etc.) and setting of the temperature range to
be used (0…300 °C or 0…500 °C) can be made through coding switches on the temperature controller itself or
through the CAN interface.
The compact design of the RESISTRON
®
Temperature Controller RES-5009 as well as the plug-in connecting
terminals make mounting and installation easier.
An overview of the most important features and functions:
• AUTOCAL - Easy calibration of the heating element by automatic zero-point setting.
• Eight channels permit switching of the calibration parameters during tool change.
• AUTOTUNE - high control dynamics by automatic adaptation to the control path.
• AUTORANGE - automatic configuration of the secondary voltage range and current range, high flexibility due
to the coverage of a secondary voltage range from 0.4 V to 120 V and a current range from 30 A to 500 A.
• Automatic adjustment to the line frequency in the range of 47 Hz to 63 Hz.
• Wide voltage range for flexible use from 110 VAC to 480 VAC
• Easy and convenient system diagnosis and process visualisation through the free, downloadable software
ROPEXvisual ®
• Comprehensive error diagnosis over the CAN interface
• Booster output available for connecting a switching amplifier