© 2019 TOSS GmbH & Co. KG -Verpackungssysteme- Alle Rechte vorbehalten! Nachdruck, auch auszugsweise, ohne unsere schriftliche Genehmigung nicht gestattet!
12
the settings change, the validity of both calibrations will be reset and a new calibration will have to be
performed for both heating conductors, starting with calibration 1.
3.4. On state
In the On-state, the PIREG-D2 controls the temperature of the heating conductor in accordance with the
target value. A phase angle controller is used. The controller returns to the Off state when the “Start” sig-
nal is removed. A corresponding control is also possible with the “Start”/”Heat” selection point in the
Working menu (
5.2.).
When sequence control is activated the On state additionally consists of the Start delay and the cooling
phase (
5.4.).
3.5. Sequence control
The sequence control can be switched on and off (
5.4.). If the sequence control is switched off, then a
sealing process with the set desired temperature is activated and deactivated after the “Start” signal. If
the sequence control is switched on, a sealing cycle with subsequent start delay, sealing time and cooling
time will be started automatically after the “Start” signal.
3.5.1. Preheating:
Preheating is used to preheat the heating element during a pause in a sealing process
or a sealing cycle. Preheating is controlled via the “Preheat” signal. When the “Preheat” signal is applied,
the PIREG-D2 adjusts the heat conductor temperature to the preset preheating temperature. The pre-
heating temperature can be set irrespective of the desired temperature. Preheating is also possible when
the sequence control is switched off.
3.5.2. Start delay:
Start delay is the delay time after the “Start” signal has been applied and until sealing
time starts. During the start delay the heat conductor is not heated by the PIREG-D2. If preheating has
been switched on, it continues.
3.5.3. Sealing time:
During the sealing time the PIREG-D2 adjusts the the heat conductor temperature
according to the set target value. Depending on the settings the sealing time starts when this sequence
phase is reached or after the actual temperature has exceeded 95% of the desired value.
3.5.4. Cooling phase:
The sealing time is followed by the cooling phase. Depending on the setting the
heating conductor is to cool down for a set time or to the preset temperature during the cooling phase.
The cooling temperature can either be set as an absolute value or as percentage of the desired value.
3.6. Monitoring
3.6.1. Temperature monitor:
The temperature monitor is a monitoring feature enabled and set in the
display unit (
5.5.1) or by command. During the sealing process, the actual temperature value is moni-
tored to ensure that it is within an temperature ok range. If the actual value comes out of the temperature
ok range after expiry of the stabilisation time, the PIREG-D2 enters the Fault state, displaying Error 83 or
84. The stabilisation period is restarted, in the case of a change in the set value by over 2°C.
3.6.2. Heating monitor:
The heating monitor is a monitoring feature enabled and set in the display unit
(
5.5.2.) or by command. With this feature, the temperature rise is monitored after the “Start" signal has
been applied. If the actual temperature value does not reach the set temperature ok range within the set
heating period, the PIREG-D2 enters the Fault state, displaying Error 85. If the set value increases by
more than 5°C, the heating monitor is restarted.
3.6.3. Start monitor:
A sealing cycle can be aborted by the “Start” monitor. The sealing cycle is interrupt-
ed when the “Start” signal is no longer applied during the running sealing cycle. An Emergency Stop func-
tion will then be executed. (
5.5.)
3.6.4. Communication monitor:
The communication monitoring is an additional monitoring function for
the two interfaces of the controller PIREG-D2, which only with one command is independently activated
and set for each interface. The communication monitor is an additional monitoring feature for the PIREG-
D2 controller’s two interfaces, which are automatically enabled and set with one single command. This
function monitors the communication via the interfaces. If communication via the interface is interrupted
for a longer time than the set downtime, the PIREG-D2 enters Fault state.
3.7. Error state
The error state is indicated on the PIREG-D” only when an error occurs. The controller monitors the line
voltage, the temperature of the heating conductor, the values of the voltage and current measurements at
the heating conductor, the calibration parameters and the monitoring functions.
The Alarm output and the Alarm LED are switched in the error state. The actual value output is also cy-
cled in some error cases. The voltage at the actual value output then changes every second between the
voltages applicable to the different errors (
Table 1). The error state can only be cancelled by switching
off the power supply, the „Reset“ signal and „Calibration Start“. With errors 10…33 the error state cannot
be cancelled with the “Calibration Start” signal.
In the error state the Error menu can be called from the display unit (
5.2.4.). Here, the error number,
an error description and possible corrective actions are displayed.
