RoboLabs Vortex Popcorn Robopop 60 Instruction Manual page 32

7.6 Thermal cut-out
Thermal cut-out DC4 (hereinafter — unit) connected to the sensor BT1
located in the heating elements area. Output of the limiter drives the
contactor KM1 that feeds the heaters. If the temperature in the heaters
area reaches 350 °C (SV+AL1), the PLC is shutting down the heating. If
temperature keeps rising, then upon reaching 370 °C, the relay output
of the unit opens the contactor, thus de-energizing the heaters.
Once machine turned on, the unit is in run mode; display reads
emperature on heating elements (not in the chamber).
There are two setting groups — Group 1 and Group 2. To enter Group 2, press and hold
for 4 seconds; release once display reads 'PAr2'. To enter Group 1, press and hold
seconds; release once display reads 'PAr1'. Press
current value of a parameter. Press
parameter. When nothing pressed during 30 seconds, the unit returns back to operational
mode. To return back to operational mode earlier, press and hold
To change set value (SV) use
The unit parameter settings are given in Table 3. It is a must to change parameters in the same
order as they appear in the chart.
After changing parameters In-t (sensor type), UnIt (measurement units), parameters H-Su,
L-Su, AL1, AL2, AHYS are initialized and must be set again. The unit has more parameters than
listed in the chart. Skip a parameter if it is not in the chart. Before changing parameters, set
LoC to oFF in order to unlock parameters for changing.
Table 3: Thermal cut-out parameter settings
Group Parameter Value Designation
Par2 In-t YCA
Par2 L-su 0250 SV low limit
Par2 H-su 0400 SV high limit
Par2 C-nd onoF Control type
Par2 oUt rLY
Par2 AL-1 An.1_ AL1 operation mode
Par2 AHYS 0010 Alarm output hysteresis
Par1 AL1 -020 AL1 alarm temperature
Par1 HYS 0020 ON/OFF control hysteresis
SV SV 370
Par2 LoC LoC3 Lock setting
, while the unit in the run mode.
Sensor type
Control output type
Set value
to list parameters. Press
to change the value. Press
for 2
, to see
to move to the next
few seconds.
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