Description of the controller
Page 8
RES-409
Version 1
the system components, in other words the heatsealing band, the impulse transformer, the wiring, the timing
signals and the controller itself, are carefully compatible and interrelated.
4
Description of the controller
The microprocessor technology endows the RESISTRON
®
temperature controller RES-409 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 February 2006) 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 RESISTRON
®
temperature controller RES-409 is equipped with a CAN-Bus interface type CAN 2.0A
according ISO 11898 (Remark: CANopen is not supported). This interface can be used to control all the controller
functions and interrogate controller information.
The ACTUAL temperature of the heatsealing band is supplied to the CAN-Bus interface and to an analog
0 to 10VDC output. The real heatsealing band temperature can thus be displayed on an external temperature
meter (e.g. ATR-x).
The RES-409 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 CAN-Bus signals are electrically isolated from the
controller and the heating circuit.
We will be pleased to
contribute our many
years of experience
towards optimizing
your
heatsealing system.
Control
logic
R=f(T)
+
_
Set point
Start
Indicators
and
controls
or
bus interface
Actual value
LINE
RESISTRON controller
Heatsealing band R = f (T)
Current
transformer
Impulse transformer
UR
IR
prim.
U1
sec.
U2