Endress+Hauser Liquiphant S FDL60, Functional Safety Manual

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Liquiphant S, Nivotester
Hauser 5
In addition to the fail-safe contact, the fault-signalling contact (alarm relay) works as a changeover contact and
goes to idle condition when:
• One of the following faults occurs:
– Fault in the sensor FDL60, FDL61 (e.g. corrosion, electronics fault)
– Fault in data transfer
– Fault in FTL670 limit switch
• The mains voltage fails
!
Note!
When the alarm relay changes to idle condition, the fail-safe contact also opens.
!
Note!
Correct installation is essential to the safe operation of the device.
The instructions on installation conditions in the Operating Instructions (
→
ä
6, "Supplementary device
documentation") must be followed.
Permitted device types The functional safety assessment described in this manual applies to the device versions listed below.
Unless otherwise indicated, all subsequent versions can also be used for safety functions.
In the event of device modifications, a modification process compliant with IEC 61508 is applied.
Device versions valid for use in safety-related applications:
Nivotester FTL670
The device version is suitable for use in safety-related applications.
Liquiphant S FDL60
Options Designation Version
010 Approval all
020 Process Connection all
025 Fork Surface Finish all
040 Electronics; Output all
050 Housing; Cable Entry all
Liquiphant S FDL61
Options Designation Version
010 Approval all
020 Process Connection all
025 Fork Surface Finish all
030 Probe Length all
040 Electronics; Output all
050 Housing; Cable Entry all