Hr 520Fs, Hr 410Fs Safety-Oriented Electronic Handwheels - HEIDENHAIN iTNC 530 HSCI Technical Manual

3.41.2 HR 520FS, HR 410FS safety-oriented electronic handwheels

July 2013
The HR 520FS and HR 410FS handwheels that are now available in addition to
the HR 550FS (wireless handwheel system) are devices that, due to their
cross-circuit-safety, can also be integrated in safety-related applications
according to EN 13849.
The handwheels with FS are plug-compatible with the respective handwheels
without FS, thanks to the M23 connecting element, and they have the same
scope of functions. As a result of the new logic behind the permissive buttons,
only one of the two buttons need to be pressed during permissive mode.
Note
Due to the changed logic of the permissive buttons, do not replace the

HR 520FS and HR 410FS with the respective variant without FS.
Please note that even if servicing is required, an HR 520FS may not be

replaced by an HR 520. This also applies to replacing an HR 410FS with
an HR 410, and vice versa.
Because of the change in the principle behind the permissive buttons, we
generally recommend using the safety-oriented handwheels with FS, due to
the cross-circuit-safety of their permissive function.
Only for the HR 550FS wireless handwheel system with HRA 551FS can the
behavior of the permissive buttons be defined by MP7645.3.
Also, a new dummy plug is being introduced for FS handwheels in case
servicing is necessary. As before, this dummy plug bridges the emergency
stop, and is adapted to the changed logic for the permissive buttons. The new
dummy plug for FS handwheels is identified by the designation
"Adapterstecker FS" and the ID 271958-05 on the ID label.
Note
Please note that the dummy plug for FS handwheels may not be

exchanged for the respective variant without FS.
For reasons of technical safety, only dummy plugs for FS handwheels

(ID 271958-05) may be used on systems that have an FS handwheel.
For reasons of technical safety, only dummy plugs for standard

handwheels (ID 271958-03) may be used on systems that have a
standard handwheel (without FS).
3.41 Handwheel input
387