HEIDENHAIN TNC 640, User Manual, Page: 724 / 948

Manual Operation and Setup | Moving the machine axes
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Special features of the wireless handwheel HR 550FS
DANGER
Caution: Danger for the operator!
Wireless handwheels, due to their rechargeable batteries and
the influence of other wireless devices, are more susceptible
to interference than cable-bound connections are. Ignoring the
requirements for and information about safe operation leads
to endangerment of the user, for example during installation or
maintenance work.
Check the radio connection of the handwheel for possible
overlapping with other wireless devices
Switch off the wireless handwheel and the handwheel holder
after an operating time of 120 hours at the latest so that the
control can run a functional test when it is restarted
If more than one wireless handwheel is being used in
a workshop, then ensure an unambiguous assignment
between the handwheels and the handwheel holders (such
as with color-coded stickers)
If more than one wireless handwheel is being used in
a workshop, then ensure an unambiguous assignment
between the handwheels and the respective machine (such
as with a functional test)
The HR 550FS wireless handwheel features a rechargeable battery.
The battery starts charging when you put the handwheel in the
holder.
You can operate the HR 550FS with the battery for up to 8 hours
before it must be recharged again. When the handwheel is
completely discharged, it takes about 3 hours until it is fully
recharged in the handwheel holder. If the HR 550 is not needed,
always put it in the handwheel holder. This way you can ensure
that the handwheel batteries are always ready for use thanks to the
contact strip on the rear side of the wireless handwheel and the
recharge control, and that there is a direct contact connection for
the emergency stop circuit.
As soon as the handwheel is in its holder, it switches internally
to cable operation. This means you can still use it even if the
handwheel is fully discharged. The functions are the same as with
wireless operation.
Clean the contacts 1 in the handwheel holder and of the
handwheel regularly to ensure their proper functioning.
The transmission range is amply dimensioned. If you should
nevertheless happen to come near the edge of the transmission
area, which is possible with very large machines, the HR 550FS
warns you in time with a plainly noticeable vibration alarm. If this
happens you must reduce the distance to the handwheel holder in
which the radio receiver is integrated.
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