Description of the controller
Page 6
RES-407
4
Description of the controller
The microprocessor technology endows the
RESISTRON temperature controller RES-407 with
previously unattainable capabilities:
• Very simple operation thanks to AUTOCAL, the
automatic zero calibration function.
• Good dynamic response of the control system
thanks to AUTOTUNE, which adapts automatically
to the controlled system.
• High precision thanks to further improved control
accuracy and linearization of the heatsealing band
characteristic.
• High flexibility: The AUTORANGE function (as of
April 2005) covers a secondary voltage range from
0.4V to 120V and a current range from 30A to
500A.
• Automatic adjustment to the line frequency in the
range from 47Hz to 63Hz.
• Increased protection against dangerous conditions,
such as overheating of the heatsealing band.
The electrically isolated analog interfaces for the
temperature set point and the actual temperature
(0-10VDC) allow the temperature to be set either
directly on the machine PLC or by means of an external
potentiometer (PD-x).
Similarly, the real heatsealing band temperature can be
visualized either on the display of the machine PLC or
on an external temperature meter (ATR-x).
The RESISTRON temperature controller RES-407
features an integrated fault diagnosis function, which
tests both the external system (heatsealing band,
wiring etc.) and the internal electronics and outputs a
selective error message in case of a fault.
To increase operational safety and interference
immunity, all 24VDC logic signals are electrically
isolated from the controller and the heating circuit.
Coding switches on the temperature controller itself
can be used to adapt to different heatsealing band
alloys (Alloy A20, NOREX etc.) and set the required
temperature range (0...300°C, 0...500°C etc.) on all
controllers manufactured as of June 2003.
An external 24VDC auxiliary voltage is required to
supply the isolating amplifiers and optocouplers. The
compact design of the RESISTRON temperature
controller RES-407 and the plug-in connections make
this controller easy to install.
5
Accessories and modifications
A wide range of compatible accessories and peripheral
devices are available for the RESISTRON temperature
controller RES-407. They allow it to be optimally
adapted to your specific heatsealing application and to
your plant's design and operating philosophy.
5.1
Accessories
The products described below are only a few of the
wide range of accessories available for RESISTRON
temperature controllers (
ª
"Accessories" leaflet).
Analog temperature meter ATR-x
For front panel mounting or mounting on a top hat rail (DIN TS35 rail).
Analog indication of the ACTUAL temperature of the heatsealing band in °C. The
meter damping of the unit is optimized for the abrupt temperature changes that occur
in impulse mode.
Digital temperature meter DTR-x
For front panel mounting or mounting on a top hat rail (DIN TS35 rail).
Digital indication of the ACTUAL temperature of the heatsealing band in °C, with
HOLD function.
