Siemens SINUMERIK 840D Description Of Functions page 428

7 Configuring example
7.6 SI I/Os using fail-safe modules connected to PROFIBUS DP
Significance and use of the individual signals:
PM-E F (channel 0) : Valve unit 3
PM-E F (channel 1) : Not used
PM-E F (channel 2) :
7.6.3 Individual application functions
The <drive on> button is only used to acknowledge the internal Emergency
Stop state. The button has no function in subsequent operation. The table of
functions below shows the logical inter-relationships between the individual
safety-relevant signals and functions. The description starts with the
assumption that the Emergency Stop state has been acknowledged.
Table 7-1 Application functions
Sensor State
Emergency Stop Not actuated
Protective door Closed
Agreement button Not applicable
Case 1
Emergency Stop Not actuated
Protective door Open
Agreement button Not pressed
Case 2
Emergency Stop Not actuated
Protective door Open
Agreement button Pressed
Case 3
Emergency Stop Actuated
Protective door Open
Agreement button Pressed
Case 4
Emergency Stop Actuated
Protective door Closed
Agreement button Pressed
Case 5
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SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Signal status channel 0 = "0"
Valve in the inhibited/quiescent position
Signal status channel 0 = "1"
Valve open
Shutting down the supply voltage for subsequent
DO module / external not used
Signal status channel 2 = "0"
The power supply voltage for the subsequent DO module is
disconnected via the two potential rails P1/P2.
Signal status channel 2 = "1"
The power supply voltage for the subsequent DO module is switched-
in via the two potential rails P1/P2.
Axes, spindles/
external devices
Axes/spindles
Valve unit 1
Valve unit 2
Valve unit 3
Supply voltage DO
Axes/spindles
Valve unit 1
Valve unit 2
Valve unit 3
Supply voltage DO
Axes/spindles
Valve unit 1
Valve unit 2
Valve unit 3
Supply voltage DO
Axes/spindles
Valve unit 1
Valve unit 2
Valve unit 3
Supply voltage DO
Axes/spindles
Valve unit 1
Valve unit 2
Valve unit 3
Supply voltage DO
Monitor function/
switching status
SG3 (> maximum speed)
Open position
Open position
Open position
Connected
SBH
Inhibit-quiescent position
Inhibit-quiescent position
Inhibit-quiescent position
Disconnected
SG1
Open position
Inhibit-quiescent position
Open position
Disconnected
STOP C -> SBH
Inhibit-quiescent position
Inhibit-quiescent position
Inhibit-quiescent position
Disconnected
STOP D -> SBH
Inhibit-quiescent position
Inhibit-quiescent position
Inhibit-quiescent position
Disconnected
© Siemens AG 2003 All Rights Reserved
11.03