Samson TROVIS 3730-3, Руководство по безопасности

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SH 8384-3 EN 11
Required conditions
5 Required conditions
Risk of malfunction due to incorrect selection or wrong installation and operating conditions.
Only use control valves in safety-instrumented systems after the necessary conditions in the
plant have been fulfilled. The same applies to the mounted positioner.
Selection
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The required transit times of the control valve are kept.
The transit times to be implemented are determined by the process engineering require -
ments.
The minimum OPEN and CLOSE transit times can be read in Codes 40 and 41 after the
positioner has been initialized.
Î
The positioner is suitable for the prevailing ambient temperature.
Versions Temperature range
All –20 to +80 °C
With metal cable gland –45 to +80 °C
The limits in the test certificates additionally apply to explosion-protected versions.
Î
The temperature limits are observed.
Mechanical and pneumatic installation
Î
The positioner is mounted properly as described in the mounting and operating instruc -
tions and connected to the air supply.
Error codes 50 to 58 indicate incorrect attachment. For safety-instrumented systems, we
recommend assigning the 'Maintenance alarm' status to these errors to quickly recognize
them when they occur (indicated by on the display).
Î
The maximum supply pressure does not exceed 7 bar.
Î
The pneumatic air supply meets the instrument air specifications.
WARNING
!
Tip
Tip