Siemens SINAMICS G130 Manual

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Controlling the safety functions7.4 Control via TM54F / option K87Safety Integrated176 Function Manual, 05/2010, A5E03264275ANoteYou have the following options of acknowledging TM54F faults after troubleshooting:• POWER ON• Falling edge in signal "Internal Event ACK" with subsequent acknowledgement on theControl Unit.The signal states of the two digital inputs of the F-DI are frozen at logical 0 (safety functionselected) when different signal states are present within a fail-safe F-DI of the TM54F, until asafe acknowledgment has been carried out by means of an F-DI via parameter p10006 (SIacknowledgment internal event input terminal) or the extended alarm acknowledgment hasbeen carried out.The monitoring time (p10002) for the discrepancy of the two digital inputs of an F-DI mayhave to be increased so that switching operations do not trigger an undesired response,thereby necessitating a safe acknowledgment. Therefore, the signal states at the two relateddigital inputs (F-DI) must have the same state within this monitoring time, otherwise thefollowing fault will be output F35151 TM54F: Discrepancy error. This requires safeacknowledgement.NoteThe discrepancy time must be set so that it is always smaller than the smallest expectedswitching interval of the signal to this F-DI.7.4.1.2 F-DI functionDescriptionFail-safe digital inputs (F-DI) consist of two digital inputs. The cathode (M) of the optocoupleris routed to the second digital input to allow the connection of an M-switching F-DO output(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/NOcontact. The status of DI can be read at parameter r10051 for the drive objects TM54F_MAand TM54F_SL. The same bits of both drive objects are logically linked by AND operationand return the status of the relevant F-DI.Test signals from controllers can be filtered out using parameter p10017, so that faults arenot incorrectly interpreted.Explanation of terms:NC contact / NC contact: to select the safety function, a "zero level" must be present on bothinputs.NC contact / NO contact: to select the safety function, a "zero level" at input 1 and a "1 level"at input 2 must be present.