S
afety
M
anual
VEGAMET
381
E
x
4
…
20
m
A
signal conditioning instruments
D
ocument
ID
:
39686
ignal
conditioning instruments
and communication
Страница 1: ...Safety Manual VEGAMET 381 Ex 4 20 mA signal conditioning instruments Document ID 39686 Signal conditioning instruments and communication...
Страница 2: ...t 12 4 2 Mounting and installation 12 5 Reaction during operation and in case of failure 5 1 General information 13 5 2 Temporal behaviour in case of failure 13 6 Recurring function test 6 1 General i...
Страница 3: ...a lingua di di cile comprensione potete richiederne una copia nella lingua del vostro paese LT Jei Jums sunku suprasti saugos nuorod tekst pateiktomis kalbomis kreipkit s mus ir mes Jums duosime kopij...
Страница 4: ...of safety technology Due to the service proven reliability according to IEC 61511 1 section 11 4 4 this is possible in a protective function up to SIL2 The following interfaces can be used l 4 20 mA...
Страница 5: ...closing contact For the sagety function only the closing contact NO contact must be used closed circuit principle Safe condition current output The safe state of the current output depends on the mode...
Страница 6: ...n interfaces e g HART USB are not used for transmission of the safety relevant measured value l The instructions in chapter Safety technical characteristics paragraph Supplementary information must be...
Страница 7: ...onitoring a limits value e g over ll or dry run protection 3 3 1 2 VEGAMET Fig 1 Structure of application 1 1 Current input and processing electronics 2 Relay 1 or relay 2 3 Actor SD SU DD DU SFF DCS...
Страница 8: ...0 046 x 10 2 PFDAVG T1 5 years 0 231 x 10 2 PFDAVG T1 10 years 0 463 x 10 2 PFH h 1 0 106 x 10 6 Diagnosis test period 4 s 3 4 Speci c gures for application 3 Two redundantly connected relays for cont...
Страница 9: ...0 2 PFH h 1 0 055 x 10 6 Diagnosis test period 4 s 3 5 Speci c gures for application 4 One current output for control of a connected processing units e g a SPLC 1 VEGAMET 4 20mA 2 3 Fig 4 Structure of...
Страница 10: ...he instrument were determined by an FMEDA according to IEC 61508 Basis for the calculations are the component failure rates according to SN 29500 All gures refer to an average ambient temperature duri...
Страница 11: ...of the measuring system is judged according to the quiescent current principle l fail low and fail high signals are interpreted as failure and a failure message is triggered If this is not the case t...
Страница 12: ...onal access e g by sealing the protective cover Warning During the instrument parameter adjustment the safety function must be considered as unreliable This applies until the parameter adjust ment is...
Страница 13: ...test period is speci ed in chapter Safety relevant characteristics Dependent on the fault a respective fault message is triggered with the following reaction time Failure messages during operation Re...
Страница 14: ...ice and the process held in a safe state by means of other measures In a multiple channel architecture this applies separately to each channel l Suitable calibrated ammeter accuracy better than 0 1 mA...
Страница 15: ...on for the upper range limit 2 Set simulated sensor current directly max 2 above the relay switching point on for the upper range limit 3 Set simulated sensor current directly max 2 above the relay sw...
Страница 16: ...elay switch points can be calculated in mA SwitchPoint_mA x SwitchPoint_ Adj_min_mA Offset_mA Adj_max_mA Adj_min_mA Adj_max_ Adj_min_ OutputValue_mA The output current in mA can be calculated by means...
Страница 17: ...ment max Adj_min_ Adjustment min O set_mA mA O set correction SwitchPoint_mA mA Relay switching point SwitchPoint_ Relay switching point Value_mA Percentage value OutputValue_mA mA Output current VEGA...
Страница 18: ...et switching point on relay 1 entspricht mA sensor current Set switching point o relay 1 entspricht mA sensor current Set switching point on relay 2 entspricht mA sensor current Set switching point o...
Страница 19: ...esult Sensor current 1 mA mA mA Sensor current 2 mA mA mA Sensor current 3 mA mA mA Sensor current 4 mA mA mA Sensor current 5 mA mA mA Date Signature Test result 2 Con rmation VEGAMET 381 Ex 4 20 mA...
Страница 20: ...rage T1 Proof Test Interval LT Life Time MTBF Mean Time Between Failure MTTF Mean Time To Failure MTTR Mean Time To Repair MTTFd Mean Time To dangerous Failure PL Performance Level ISO 13849 1 Low dem...
Страница 21: ...unction executed by a safety related element or subsystem of Type B Hardware Fault Tolerance SFF HFT 0 HFT 1 HFT 2 60 Not allowed SIL1 SIL2 60 90 SIL1 SIL2 SIL3 90 99 SIL2 SIL3 SIL4 99 SIL3 SIL4 SIL4...
Страница 22: ...9 Supplement C SIL conformity 22 VEGAMET 381 Ex 4 20 mA signal conditioning instruments 9 Supplement C SIL conformity 39686 EN 110930...
Страница 23: ...VEGAMET 381 Ex 4 20 mA signal conditioning instruments 23 9 Supplement C SIL conformity 39686 EN 110930...
Страница 24: ...vega com Printing date ISO 9001 All statements concerning scope of delivery application practical use and operating conditions of the sensors and processing systems correspond to the information avail...
