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Our staff of freelance writers includes over 120 experts proficient in FSC System Output Fault Detection and Response, therefore you can rest assured that your assignment will be handled by only top rated specialists. Order your FSC System Output Fault Detection and Response paper at affordable prices !Output fault detection applies to hardware outputs that are allocated
to tested output modules. The tests include detection of faults
affecting
·a single output channel,
Cheap University Papers on FSC System Output Fault Detection and Response
·a group of output channels at the same output module, and
·all channels of an output module.
Output fault detection applies to the following fail-safe output
modules
ModuleGroup specification
- 1001/1/1 and 1001//1 Group 1 channels 1 to 4
Groupchannels 5 to 8
- 100/1/ Group 1 channels 1 to 4
- 1005/1/1 and 1005//1 Each channel is a separate group.
- 101/1/1Group 1 channels 1 to 4
Groupchannels 5 to 8
- 101/1/1 and 101//1 Group 1 channels 1 to 4
- 101/1/ and 101// Group 1 channels 1 to 4
- 101/1/ and 101// Group 1 channels 1 to 4
- 1014/1/ Group 1 channels 1 to
- 1015/1/1 and 1015//1 Group 1 channels 1 and
Groupchannelsand 4
- 1016/1/1 and 1016//1 Group 1 channels 1 to 4
- 1016// Group 1 channels 1 to 4
Safety-related Outputs
If a fault affects an output configured for a safety-related signal, the
faulty output is forced to the safe state (i.e. 0). The 0 value is
applied to the process, regardless of the value calculated by the
application program.
Depending on the predefined effects of the fault,
a single channel, a group of channels or all channels of an entire
module are forced to 0.
If a fault is detected for one output channel, that channel is
forced to 0. If a fault is detected for two or more channels
within a single output group, all channels of the entire group are
forced to 0.
If an entire group of safety-related output channels is regarded faulty,
the second fault timer is started.
If all groups at the same output module are faulty, the entire module is
regarded faulty.
If an entire safety-related output module is regarded faulty, the Central
Part that controls the affected output module will trip. If the module is
located in a single I/O section, the entire FSC system will trip.
Digital Outputs
If a safety-related digital output channel is over-loaded or shorted, the output will switch off.
If a second fault in that output group is detected, all channels of the entire group are
forced to 0.
A fault on a safety-related output will generate an FSC system fault, and
remain de-energized until a fault reset is given.
Non-safety-related outputs switch on again after a delay of several
hundreds of milliseconds. A system fault is only
generated if the output is of a fail-safe type.
Analog Outputs
An open-circuit across a safety-related analog output will cause that output to be forced to '0'. An FSC system fault will be generated, and the output will remain de-energized and defect until a fault reset is given.
A short-circuit across a safety-related analog output will cause the output to be forced to '0'. This however, will not render the output defective. When the short-circuit is removed, the output value is applied to the process as calculated by the application program. A fault reset is not necessary.
Non-safety-related Outputs
If a fault affects an output configured for a non safety-related signal,
the fault is only reported. The output value is applied to the process as
calculated by the application program as a result of the faulty module.
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