Siemens SINAMICS Series Function Manual page 69

5.3 Control of "STO" and "SS1" via terminals on the Control Unit and the Motor/Power Module
Principle of operation
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.
Danger to life as a result of failure of the safety functions through unsuitable selection of the
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
Terminal strip –X41 on the Control Interface Module of the chassis Motor Module
Table 5- 12
Terminal
-X41:2
-X41:1
Safety Integrated
Function Manual, 07/2016, A5E03264275A
WARNING
with the required standard (DIN EN ISO 13849-1 (formerly EN954-1) Cat. 3 PL d or DIN
EN 61508 SIL2).
Terminal strip –X41 on the Control Interface Module of the chassis Motor Module
Function
EP +24 V (enable pulses)
EP M1 (enable pulses)
Controlling the safety functions
Technical data
Supply voltage: 24 VDC (20.4 ... 28.8 V)
Power consumption: 10 mA
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