Siemens SIMATIC ET 200SP Manual page 13

Accessories
The following accessory must be ordered separately:
● Labeling strips
● Color identification labels
● Reference identification labels
● Shield connection
● Electronic coding element as spare part
You can find additional information about accessories in the Distributed I/O System
ET 200SP System Manual (http://support.automation.siemens.com/WW/view/en/58649293).
Passivation of fail-safe outputs over a long period of time
Unintentional activation of F-I/O with fail-safe outputs
If an F-I/O with fail-safe outputs is passivated for a period longer than that specified in the
safety parameters (> 100 hours) and the fault remains uncorrected, you need to exclude
the possibility that the F-I/O can be activated unintentionally by a second fault, and thus put
the F-system in a dangerous state.
Even though it is highly unlikely that such hardware faults occur, you must prevent the
unintentional activation of F-I/O with fail-safe outputs by using circuit measures or
organizational measures.
One possibility is the shutdown of the power supply of the passivated F-I/O within a time
period of 100 hours, for example.
The required measures are standardized for plants with product standards.
For all other plants, the plant operator must create a concept for the required measures and
have it approved by the inspector.
Property of the individual shutdown of F-modules with fail-safe outputs:
A channel-specific shutdown occurs when a fault is detected. It is also possible to react to
critical process states staggered over time or to perform safety-related shutdown of
individual outputs.
Digital output module F-DQ 8x24VDC/0.5A PP HF (6ES7136-6DC00-0CA0)
Manual, 05/2017, A5E38578424-AA
WARNING
Product overview
2.1 Properties
13