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HR 550 wireless
handwheel
July 2013
The HR 550FS wireless handwheel must always be used together with the
HRA 551FS handwheel adapter. The handwheel and the handwheel adapter
communicate with each other via radio transmission. The handwheel adapter
is connected to X23 of the control system via the connecting cable.
When the handwheel is located in the HRA, contacts on the HRA and on the
rear of the HR are used to communicate via serial data transmission instead of
via radio transmission. The function of the HR 550FS remains the same,
regardless of whether it communicates via radio transmission or via the
handwheel adapter.
The HRA handwheel adapter features an integrated charger for the handwheel
batteries. In addition, the safety-related signals (emergency stop, permissive
buttons) are translated into relay contacts through the HRA. They must be
used to connect the emergency stop button and the permissive buttons of the
handwheel to the control and the associated safety circuits.
Danger
If more than one control with a portable HR 550FS handwheel is located in
a factory hall, a room or a working area, the handwheels must be identified
by unique color markings. The color marking must be applied to the
handwheel and the associated machine tool at a clearly visible location. The
marking on the handwheel and the machine tool must enable the machine
operator to identify unambiguously which handwheel belongs to which
machine tool. The color marking must ensure that no confusion occurs. A
set of different markers is included with the wireless handwheel.
In addition, the machine operator must be informed that he must ensure/
verify every time before using the handwheel that he uses the correct
handwheel for the respective machine tool.
If the machine operator moves with the HR too far away from the HRA, a
vibration alarm announces that transmission is weak before the machine
operator has actually left the radio range. If the machine operator leaves the
radio range anyway, or if radio communication is interrupted for other reasons,
the HRA relay contacts for emergency stop and for the permissive buttons will
open. You must ensure through appropriate wiring that this triggers an
emergency stop on the control.
HEIDENHAIN also recommends that you always place the wireless
handwheel into the HRA 551FS adapter when you are not using it. This
prevents you from confusing the different handwheels. It also ensures that
the handwheel battery is recharged and prevents an unexpected emergency
stop reaction triggered by an empty battery.
8.8 Electronic handwheel
1519
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