HEIDENHAIN TNC 620 User Manual page 176

5
Special features of the HR 550FS radio handwheel
Caution: hazard to the user!
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 radio handwheel features a rechargeable battery. The
battery starts charging when you put the handwheel into the holder.
The HRA 551FS handwheel holder and the HR 550FS handwheel
together form one functional unit.
The HR 550FS can be operated by battery for up to eight hours
before it needs recharging. A completely discharged handwheel
takes approx. three hours for a full charge. When you do not use the
HR 550FS, always place it into the handwheel holder. This charges
the handwheel battery constantly and a direct connection with the
emergency off circuit is provided.
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 of the handwheel holder and
handwheel regularly to ensure their proper functioning.
The transmission range is amply dimensioned. If you happen to
get close to the limit of the transmission range, for example in very
large machines, the HR 550FS sets off a vibrating alarm that is
reliably noticed. If this happens you must reduce the distance to the
handwheel holder in which the radio receiver is integrated.
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HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022
Setup | Moving the machine axes
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