Controlling The Safety Functions; Overview Of F-Di/F-Dos And Of Their Structure - Siemens SINAMICS G130 Manual

Controlling the safety functions

7.1

Overview of F-DI/F-DOs and of their structure

The safety-oriented input and output terminals (F-DI and F-DO) act as an interface between
the internal Safety Integrated functionality and the process.
A dual-channel signal applied to an F-DI (Fail-safe Digital Input, safety-oriented digital input
= safe input terminal pair) controls the active monitoring of the activation/deactivation of
safety functions. This function also depends on the status of sensors (e.g. switches).
An F-DO (Failsafe Digital Output, safety-oriented digital output = safe output terminal pair)
delivers a dual-channel signal representing feedback from the safety functions. It is suitable,
for example, for the safety-oriented control of actuators (e.g. line contactor). See also the
figures "F-DI 0 ... 4 overview", "F-DI 5 ... 9 overview" and "F-DO overview (without showing
the main contacts on the contactors)".
Dual-channel processing of I/O signals
A dual-channel structure is implemented for data input/output and for processing safety-
oriented I/O signals. All requests and feedback signals for safety-oriented functions should
be entered or tapped using both channels.
The following options are available for controlling Safety Integrated functions:
● Control by way of terminals on the Control Unit and Motor Module (only STO, SS1(time
● Control by way of PROFIsafe
● Control by way of TM54F terminals
Control by way of terminals on the Control Unit and Motor Module can be activated
alongside with one of the other two options. Only one of the two control modes can be
selected for each drive object; either PROFIsafe or TM54F.
NOTICE
Per single Control Unit, either control via PROFIsafe or TM54F is permitted. Mixed
operation is not permitted.
Safety Integrated
Function Manual, 05/2010, A5E03264275A
controlled) and SBC).
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