Startup and operation
Seite 18
UPT-6010
Version 2
In addition to the device name, restoring the factory settings by setting the rotary coding switch to
"0xFF" also erases all I&M data in the memory.
In order to assign the device name via the PROFINET interface (e.g. using a programming tool), the
rotary coding switch must be set to "0x00".
Note: By using a configuring tool (e.g. Siemens STEP7) to specify the PROFINET topology, you can also assign
a name automatically if the controller does not already have a device name when it is switched on. In this case,
the PLC automatically assigns it the name stored in the project.
7.2.4
Configuration of the alarm relay
If the switch is set to "Alarm relay de-energized at alarm / PC CONFIGURATION", you can select more alarm
output configurations in the ROPEX visualization software (
section 8.12 "USB interface for visualization soft-
7.3
Heating element
7.3.1
General
The heating element is a key component in the control loop because it is not only a heating element but also a
sensor. The geometry of the heating element is too complex to be discussed at length here. We shall therefore
only refer to a few of the most important physical and electrical properties.
The measuring principle used for this system requires a heating element alloy with a suitable temperature coeffi-
cient TCR, i.e. one whose resistance increases as the temperature rises.
Too low a TCR leads to oscillation or uncontrolled heating.
If a heating element with a higher TCR is used, the controller must be calibrated for it.
The CIRUS
®
temperature controller is suitable for temperature coefficients in the range 400…4000 ppm/K.
The base resistance of the heating element increases continuously during operation (owing to the
design). The "AUTOCAL" function must therefore be run again approximately every 100,000 heat-
sealing cycles in order to prevent ACTUAL temperature measuring errors.
7.3.2
Replacing the heating element
The supply voltage (all poles) must be disconnected from the CIRUS
®
temperature controller in
order to replace the heating element.
The heating element must be replaced in accordance with the instructions provided by the manu-
facturer.
!
!
0
5
1
2
3
4
6
7
8
9
AU
X
CONF
IG
URATI
ON
ALARM
O
UTP
UT
ENER
GIZ
ED
(A
T AL
ARM)
DE-E
NERG
IZ
ED
Alarm relay contact
opened by alarm/
PC-CONFIGURATION
Alarm relay contact
closed by alarm.
(factory setting)
!
!
!
