July 2013 3.41 Handwheel input 385
The adapter includes plug-in terminal strips for the contacts of the emergency
stop button and permissive button (max. load 24 V–, 1.2 A).
The plug-in terminal strips are supplied together with the adapter cable. If you
have an immediate need for these terminal strips, they can be ordered in
advance. See the "Additional components" table below.
Internal wiring of the contacts for the emergency stop button and permissive
button:
You must calculate the probability of failure according to EN 13849-1 for the
safety circuit with permissive-button information. This value is used to
determine a maximum testing time for this safety circuit, which must not be
exceeded. The control must be turned off and on again within this testing
time.
HEIDENHAIN would like to point out that the permissive buttons on the
HR 520, HR 420 and HR 410 handwheels are not cross-circuit proof. If your
machine requires a handwheel with cross-circuit proof permissive buttons,
you must use a HR 410FS or HR 520FS handwheel.
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