Siemens SINUMERIK 840D Description Of Functions page 426

7 Configuring example
7.6 SI I/Os using fail-safe modules connected to PROFIBUS DP
F-DI (channel 2.6) : Agreement button
F-DI (channel 3,7) : <drive on> key
VS1: Internal encoder supply for channels 0 to 3
VS2: Internal encoder supply for channels 4 to 7
Both of these encoder supplies must be used when the short-circuit test is
activated (cf. Chapter "Configuration and wiring of the ET200S I/Os ->
Components of the node IM151 HF: F-DI module).
The exclusive OR sensor agreement button is an exception. For this type of
wiring, the encoder supply VS1 must be used, in conjunction with the short-
circuit test, for both contacts.
Electronic module The actuators that must be shut down in a safety-related fashion, are
4 F-DO DC24 V/2 A connected through two channels. Shutdown is possible separately for each
PROFIsafe channel.
Two valve units are connected in the sample configuration to control the motion
of supplementary pneumatic axes.
F-DO
DO 0 P 1
Channel 0
DO 0 M 2
DO 1 P 5
Channel 1
DO 1 M 6
DO 2 P 9
Channel 2
DO 2 M 10
DO 3 P 13
Channel 3
DO 3 M 14
BSP_FDO_Verdrahtung.dsf
Fig. 7-32 Example: F-DO connections
7-426
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Signal status channel 2 = "1" and channel 6 = "0"
Agreement button not pressed
Signal status channel 2 = "0" and channel 6 = "1"
Agreement button pressed
Signal status channel 3 = "0" and channel 7 = "0"
<drive on> key not pressed
Signal status channel 3 = "1" and channel 7 = "1"
<drive on> key pressed
Valve unit 1
Valve unit 2
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11.03