Safety Info Channel And Safety Control Channel - Siemens Sinumerik 840D sl Function Manual

Connecting Sensors/Actuators

7.7 Safety Info Channel and Safety Control Channel

S Master- -slave: The automatic test of the mechanical braking system has not
been released for master--slave couplings, as mechanical damage cannot be
fully excluded if the brake is defective due to the wide range of different
couplings available. When using a master--slave configuration, it must be de-
cided as to whether a temporary or a permanent coupling is involved. A tem-
porary coupling can be disconnected (released) before testing the mechanical
brake system so that the individual brakes are tested.
S Gantry group: The automatic test of the mechanical braking system is not
released for gantry groups, as mechanical damage cannot be fully excluded if
the brake is defective due to the wide range of different couplings.
7.7 Safety Info Channel and Safety Control Channel
Safety Info Channel
The Safety Info Channel (SIC) enables Safety Integrated functionality status infor-
mation of the drive to be transmitted to the higher--level motion control system. As
a consequence, for safety STOP responses of the drive (e.g. for STO) the motion
control is informed, so that it can respond in the best possible way. This means
that in situations such as these e.g. no additional setpoints are issued for the path,
which means that no follow--on/subsequent alarms occur that have to be acknowl-
edged. Any types of setpoint inputs, e.g. override, F or S program blocks, are
blocked by the setpoint speed limiting transferred in the SIC.
Further, the status information is made available in the PLC user interface. This
gives users the option of initiating the appropriate responses in the PLC user
program to the safety functions of the drive.
Safety Control Channel
Using the Safety Control Channel (SCC), control information is sent to the safety
functions of the drive via the higher--level control. This means that functions, such
as a brake test or a test stop, can be selected in the drive.
Use in the "Sinumerik Safety Integrated" operating mode
This functionality is used in the following cases in the "SINUMERIK Safety Inte-
grated" operating mode:
S Connecting external Sinamics drives with safety functionality integrated in the
drive, which are assigned to an NC axis, to the motion control.
S Using the brake test functionality integrated in the drive for the NC axes with
SINUMERIK Safety Integrated monitoring enabled.
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
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