Fault Acknowledgment; F-Di Function - Siemens SINAMICS S120 Function Manual

11.9.2

Fault acknowledgment

You have the following options of acknowledging TM54F faults after troubleshooting:
● POWER ON
● Falling edge of the signal "Internal Event ACK" with subsequent acknowledgment on the
Control Unit ("fail-safe acknowledgment")
11.9.3

F-DI function

Description
Fail-safe digital inputs (F-DI) consist of 2 digital inputs. At the 2nd digital input, the cathode (M)
of the optocoupler is additionally brought out to enable connection of an output of a fail-safe
control grounded through a switch. (The anode must be connected to 24 V DC).
Parameter p10040 is used to determine whether an F-DI is operated as NC/NC or NC/NO
contact. The status of each DI can be read at parameter r10051. The bits of both drive objects
are logically AND'ed and return the status of the relevant F-DI.
Test signals from F-DOs and interference pulses can be filtered out using the input filter
(p10017), so that they do not cause any faults.
Explanation of terms:
NC contact/NC contact: to select the safety function, a "zero level" must be present at both
inputs.
NC contact / NO contact: to select the safety function, a "zero level" must be present at input
1 and a "1 level" at input 2.
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.
To enable the forced checking procedure (test stop), connect the digital inputs of F-DI 0 ... 4 of
the TM54F to the dynamic voltage supply L1+ and the digital inputs to F-DI 5 ... 9 to L2+.
Additional information for the forced checking procedure (test stop) is provided in Chapter
"Forced checking procedure or test of the switch-off signal paths (test stop) for Safety
Integrated Basic (Page 640)".
Table 11-6
Module
TM54F
F-DI features
● Fail-safe configuration with 2 digital inputs per F-DI
● Input filter to block test signals with an adjustable suppression time (p10017), see Chapter
"Bit pattern test (Page 664)".
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Overview of the fail-safe inputs in the SINAMICS S120/S150 List Manual:
Function diagram
2893
2894
Safety Integrated Basic Functions
11.9 Control via TM54F
Inputs
F-DI 0 .... 4
F-DI 5 ... 9
667