Siemens SINAMICS G130 Manual page 177

The signal states at the two associated digital inputs (F-DI) must assume the same status
configured in p10040 within the monitoring time set in p10002.
In order to enable forced dormant error detection, connect the digital inputs of F-DI 0 ... 4
with the dynamic voltage supply L1+ and the digital inputs with F-DI 5 ... 9 to L2+ (for
additional information on forced dormant error detection, see the corresponding function
description in the chapter "Extended Functions").
In the SINAMICS Parameter Manual, function diagrams 2850 and 2851 show an overview of
the fail-safe inputs F-DI 0 .... 4 or F-DI 5 ... 9.
F-DI features
● Fail-safe configuration with two digital inputs per F-DI
● Input filter for test signals with an adjustable gating time (p10017)
● Configurable connection of NC/NC or NC/NO contacts by means of parameter p10040
● Status parameter r10051
● Adjustable time window for monitoring discrepancy at both digital inputs by means of
● Second digital input with additional tap of the optocoupler cathode for connecting an M-
The inclusion of additional load resistors makes it possible to use digital outputs with larger
residual currents to connect TM54F inputs.
Safety Integrated
Function Manual, 05/2010, A5E03264275A
parameter p10002 for all F-DIs
Note
To avoid incorrect triggering of fault messages, on these inputs the discrepancy time
must always be set less than the shortest time between two switching events (ON/OFF,
OFF/ON).
switching output of a fail-safe controller.
WARNING
As opposed to mechanical switching contacts (e.g. Emergency Stop switches), leakage
currents can still flow through semiconductor switches even when they are switched off.
This can lead to false switching states if digital inputs are not connected correctly.
The conditions for digital inputs/outputs specified in the relevant manufacturer
documentation must be observed.
WARNING
In accordance with IEC 61131 Part 2, Chapter 5.2 (2008), only outputs that have a
maximum residual current of 0.5 mA when "OFF" can be used to connect TM54F digital
inputs with digital semiconductor outputs.
Controlling the safety functions
7.4 Control via TM54F / option K87
177