Functional Principle - Fronius Robacta TC 2000 Operating Instructions Manual

Functional principle

Functional prin- -
ciple
NOTE!
Before the capacitors can be charged, the cleaning device must be connected to
both the mains power supply and the robot control. The "Quick Stop" signal
must also be set.
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18
Once the cleaning device is connected to the mains power supply, the mains
voltage indicator lights up. The capacitors, which store energy for the clean-
ing operation, are discharged and no outputs are activated.
The device temperature is checked before the capacitors are charged. If it
lies within the tolerance range, the capacitors are charged in preparation for
a cleaning operation. If the operating temperature is exceeded, the overtem-
perature indicator lights up. Capacitor charging only begins once the temper-
ature has fallen to the permitted operating temperature.
The "Ready" signal is output to the robot control after twenty seconds of
charging - the "Ready-to-discharge" indicator on the device begins to flash.
When the capacitors are fully charged, the light remains permanently on. Al-
though the device has still not achieved maximum magnetic flux density
after just twenty seconds, the cleaning operation (discharge process) can still
be triggered using the "Cleaning Start" signal. For adjustment purposes, the
cleaning operation can also be manually triggered using the discharge button
on the device.
The maximum magnetic flux density for cleaning is available after fifty
seconds of charging.
See the diagram below for the exact relationship between charging time and
the magnetic flux density available.
5
4,5
4
3,5
3
(2)
20 25
(1)
(1) Magnetic flux density available (Tesla)
(2) Charging time (seconds)
30 35 40 45 50