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S5-115F Manual
Define protection targets
Define the protection targets for your process and the criteria for transfer of the system to a safe
state.
Answer the following questions on this subject:
•
Under what circumstances must the entire system be shut down?
•
Under what circumstances would it suffice to shut down only subprocesses?
•
Is passivation of I/O modules permitted?
•
Under what conditions can subprocesses of the system remain switched on under supervision?
Define safety-related counters and timers
Define all safety-related timers and counters together with the inspector. This includes variables
which you need to specify when setting the operating system parameters with COM 115F, such as:
•
Maximum test scan time
•
Maximum discrepancy times
•
Second error occurrence time
Also define system-specific variables such as
•
Maximum total response time of the system (response time of the PLC + response time of the
sensors and actuators)
•
Maximum number of permissible firing attempts (in the case of burners)
Hardware requirements
All modules and module racks suitable for the S5-115F have been prototype-tested by the
Bavarian Technical Inspectorate and require no further testing.
However, please ensure adherence to the required ambient conditions such as temperature and
humidity as specified in the Technical Specifications. Check the characteristics and requirements of
your sensors and actuators.
Communications with further devices
Please ensure that no safety-related functions or subprocesses are impaired as a result of data
interchange with communications partners. For this reason, check the connection of the S5-115F
to the folllowing:
•
Local area networks (e.g. SINEC L1 LAN)
•
Point-to-point connection partners (e.g. connection over the CP 523)
•
Data terminal devices (e.g. printer, modem or terminal)
If you want to further process safety-related data in a safety-related manner, you require a failsafe
connection, e.g. a point-to-point connection over CP 523 with failsafe standard FBs.
At least one reaction-free connection is required for transferring non-safety-related data.
Answer the following questions if you are planning communications with other devices:
•
Who are the communications partners?
•
Is the data to be transferred unidirectionally or bidirectionally?
•
Is safety-related data to be transferred?
•
Could the data transfer lead to falsification of safety-related data in the S5-115F?
Documentation for the pre-inspection
Discuss with the inspector what documentation is required for the pre-inspection.
EWA 4NEB 811 6148-02
Rules Governing the Use of the S5-115F
10-71
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