Forced Checking Procedure (Test Stop) Of The Cu310-2 - Siemens SINAMICS S120 Function Manual

Commissioning
6.9 Commissioning CU310-2
6.9.2

Forced checking procedure (test stop) of the CU310-2

Testing failsafe inputs and outputs
Failsafe inputs and outputs must be tested for fail-safety at defined time intervals (forced
checking procedure or test stop). For this purpose, the CU310-2 contains a function block
that executes this forced checking procedure (test stop) for the failsafe output when selected
via a BICO source. Each time a forced forced checking procedure (test stop) is performed
without error, a timer is started to monitor the time until the next required test. After this time
interval (p10003) has elapsed and every time the Control Unit is switched on, the user is
informed by the message A01774 that a forced checking procedure (test stop) must be
performed.
● 3 modes can be selected for testing the output (see following chapter).
Note
Testing the sensors for the CU310-2
Unlike TM54F, the sensors connected to the F-DI of the CU310-2 cannot be tested as part of
the forced checking procedure (test stop). The user must cyclically test sensors connected to
the F-DIs. Then it is sufficient to actuate the particular sensor and to check the
corresponding function selection.
Execution
When parameterizing, proceed as follows:
1. Derive the suitable mode from the circuit used in your application (see figures in the
following chapters).
2. Use parameter p10047 to set the mode that is to be used.
3. Use parameter p10046 to define whether the digital output F-DO 0 is to be tested.
4. Use parameter p10001 to set the time within which the digital output signals to the
corresponding digital inputs or DIAG inputs must be recognized.
5. With parameter p10003, set the interval within which the forced checking procedure (test
stop) is to be performed. After this interval has elapsed, the user is informed by the
message A01774 that the forced checking procedure (test stop) must be performed for
the F-DI/F-DO.
6. Set the signal source which triggers the start using parameter p10007. This can be, for
example, a control signal or switch via a BICO switchable signal.
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Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Safety Integrated