7.9.2 Acknowledgment via PROFIsafe
You program a PROFIsafe acknowledgment in the safety program of the F-PLC by setting
signal "Internal Event ACK" separately for each drive object using the PROFIsafe telegram
(STW bit 7).
Faults in the drive objects (DOs) cannot be acknowledged by the F-PLC in the line-up, but must
instead be acknowledged separately for each individual drive object. A falling edge of the
"Internal Event ACK" signal resets the status "Internal Event" in the particular drive, and thus
acknowledges the fault.
7.9.3 Additional acknowledgment via PROFIdrive RESET
WARNING
Unexpected restart for safety-related acknowledgment without MCP reset!
If a STOP response is acknowledged in a safety-related fashion by the machine operator, but
without PROFIdrive RESET acknowledgment, then the part program is not canceled and is
continued with the acknowledgment. When the machine restarts unexpectedly, this can put
people in dangerous situations or cause material damage.
● In the safety program logically combine safe acknowledgment (PROFIsafe IEACK) with a
RESET at the machine control panel (PROFIdrive RESET).
In addition to a safety-relevant acknowledgment, various fault situations also require an
acknowledgment using a PROFIdrive RESET.
This applies to the following STOP responses or safety functions:
● Extended Functions:
– All fault situations - or safety functions and STOP responses
● Basic Functions or inactive safety message buffer:
– Parameterizing SLS with STOP D or STOP E
In the case of a fault, if safety-relevant acknowledgment is realized without a PROFIdrive
RESET, even though the part program remains in the stop state, the spindle starts again.
A configuration such as this is not in conformance with standard IEC 61800-5-2. According to
the standard, a restart inhibit is required for all STOP functions, and it is only permissible that
the spindle restarts after a RESET.
Therefore, in the safety program logically combine safety-relevant acknowledgment
(PROFIsafe IEACK) with a RESET at the machine control panel (PROFIdrive RESET).
This means that you should configure the machine control panel RESET (MCP reset or
channel/MODE GROUP RESET) so that when actuated, a PROFIdrive RESET as well as a
safety-relevant acknowledgment (e.g. PROFIsafe IEACK) are initiated.
Diagnostics
7.9 Acknowledging
Safety Integrated (with SINAMICS S120)
338 Commissioning Manual, 02/2020, A5E46305916B AB
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