23 – 366 HEIDENHAIN Service Manual iTNC 530 HSCI
TE 620, TE 630
and TE 635 Q
Keyboards currently used:
Machine-specific keyboards are also used, most of which work according to the same principle.
Power supply The TE 6xx is powered by the MC 6222 or BF 250 via the USB cable.
Screen soft keys The screen soft keys are on separate boards (horizontal and vertical soft key rows) that are connected
to the keyboard PCB via ribbon cables.
Key signals The key signals are transmitted to the controls by means of a matrix with every crosspoint of a
ScanLine (SL) being assigned to a certain key via a ReturnLine (RL).
The key signals are transferred to the MC 62xx (possibly via a BF 250) with a USB cable.
Touchpad signals The touchpad signals are transferred to the MC 62xx (possibly via a BF 250) with the same USB cable
that transfers the key signals.
Potentiometers With a ribbon cable, the potentiometers of the TE 6xx are powered and evaluated by the MB 620
machine operating panel. The information is transferred to the control via the HSCI bus.
USB interfaces The TE 6xx keyboard units feature two USB interfaces (USB 1.1) on the rear side.
One USB interface is connected to the MC 6222 or BF 250, the other one is freely available
(e.g. for connecting a trackball).
Power distribution
switches
Active handwheel If an HR 520 electronic handwheel is active, machine operation via keyboard is locked.
Keyboard Windows
keys
smarT.NC
keys
Touchpad Machine-operating
panel included
TE 620 X X - -
TE 630XXX-
TE 635 QXXXX
If USB components that are connected to the TE 6xx require more than 0.1 A, a separate
power supply becomes necessary for these components. One possibility is the USB hub
from HEIDENHAIN.
The TE 6xx features "power distribution switches."
These are electronic fuses that separate USB devices that draw too much current from
the TE 6xx.
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