Controlling the safety functions
5.3 Control of "STO" and "SS1" via terminals on the Control Unit and the Motor/Power Module
Safety Integrated
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The first shutdown path for the integrated safety functions is activated via a digital input on
the Control Unit. Digital inputs DI 0 to DI 7, DI 16, DI 17, DI 20 and DI 21 are available for
this purpose.
The second shutdown path for the integrated safety functions is activated using the terminals
(-X41:1, -X42:2) on the Control Interface Module of the Motor Module.
The selection and deselection must be simultaneous. The time delay that is unavoidable due
to mechanical switching processes, for example, can be adapted via parameters. p9650
specifies the tolerance time within which the selection/deselection of the two monitoring
channels must occur in order to be considered as "simultaneous".
The selection of the safety function on the Control Unit and on the Motor Module must be
executed over two channels. A switch according to ISO 13850/ EN 418, positive opening
according to EC 60947-5-1, or a certified safety controller must be used as actuating
element.
An unsuitable actuating element may cause the safety function to fail which can result in
death or serious injury.
• Select the correct actuating element for the purpose of compliance of the overall system
with the required standard (DIN EN ISO 13849-1 (formerly EN954-1) Cat. 3 PL d or DIN
EN 61508 SIL2).