Siemens SINUMERIK 840D Description Of Functions page 427

11.03
Significance and use of the individual signals:
F-DO (channel 0) : Valve unit 1
F-DO (channel 1) : Not used
F-DO (channel 2) : Valve unit 2
F-DO (channel 3) : Not used
PM-E F power module This module combines two functions. On the one hand, all three two-channel
output channels can be connected to individual actuators (cf. functionality of an
F-DO module); on the other hand, the third output channel DO 2 has an
additional function.
Output channel DO2 is used to internally switch-in or switch-out the safety-
relevant (i.e. via two voltage potentials) power supply to or from the
downstream standard DO or standard DI modules. This means that the outputs
on the DO modules can be controlled as single-channel outputs in the PLC for
the "normal" function – after the PM-E F module, all of the DO modules can be
shut down in a safety-related fashion.
PM-E F
DO 0 P 9
Channel 0
DO 0 M 10
DO 1 P 13
Channel 1
DO 1 M 14
DO 2 P 11,15
Channel 2
DO 2 M 12,16
Fig. 7-33 Example: PM-E F connections
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
7.6 SI I/Os using fail-safe modules connected to PROFIBUS DP
Signal status channel 0 = "0"
Valve in the inhibited/quiescent position
Signal status channel 0 = "1"
Valve open
Signal status channel 2 = "0"
Valve in the inhibited/quiescent position
Signal status channel 2 = "1"
Valve open
P1 (P)
Internal disconnection of voltage buses
P2 (M)
External wiring for additional actuators possible on DO2
7 Configuring example
Valve unit 3
Group disconnection from
standard modules
BSP_PMEF_ Verdrahtung.dsf
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