Related Manuals for Siemens SITRANS LVL200H
Summary of Contents for Siemens SITRANS LVL200H
- Page 1 Vibrating Switches SITRANS LVL200H Relay (2 x SPDT) With SIL qualification Safety Manual • 04/2018...
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Page 2: Table Of Contents
Repair ..........................10 Proof test ..........................11 General information ......................11 7.2 Test 1: Without filling or dismounting the sensor ............. 11 7.3 Test 2: With filling or dismounting of the sensor .............. 12 Appendix A: Test report ......................13 9 Appendix B: Term definitions ....................14 10 Supplement C: SIL conformity ....................15 Editing status: 2018-04-19 SITRANS LVL200H - Safety Manual... -
Page 3: Document Language
Document language Das vorliegende Safety Manual für Funktionale Sicherheit ist verfügbar in den Sprachen Deutsch, Englisch, Französisch und Russisch. The current Safety Manual for Functional Safety is available in German, English, French and Russian language. Le présent Safety Manual de sécurité fonctionnelle est disponible dans les langues suivantes: allemand, anglais, français et russe. Данное руководство по функциональной безопасности Safety Manual имеется на немецком, английском, французском и русском языках. SITRANS LVL200H - Safety Manual... -
Page 4: Scope
Scope Instrument version This safety manual applies to point level sensors SITRANS LVL200H - Relay (2 x SPDT) with SIL qualification Electronics module: • SG60HT-S Valid versions: • from HW Ver 1.0.0 • from SW Ver 1.1.0 Area of application The instrument can be used for level detection of liquids in a safety- related system according to IEC 61508 in the modes low demand mode or high demand mode. -
Page 5: Planning
• The specifications according to the operating instructions manual, particularly the current load on the output circuits, must be kept within the specified limits • To avoid a fusing of the relay contacts, these must be protected by an external fuse that triggers at 60 % of the max. contact current load. • When used as dry run protection, buildup on the vibrating system should be avoided (probably shorter proof test intervals will be necessary) • The instructions in chapter "Safety-related characteristics", para- graph "Supplementary information" must be noted • All parts of the measuring chain must correspond to the planned "Safety Integrity Level (SIL)" SITRANS LVL200H - Safety Manual... -
Page 6: Safety-Related Characteristics
Test 1 11 FIT 68 % Test 2 2 FIT 96 % Characteristics acc. to ISO 13849-1 Derived from the safety-related characteristics, the following figures result according to ISO 13849-1 machine safety): Parameter Value MTTFd 489 years 85 % Homogeneous redundancy possible. Including errors outside the safety function. Time during which all internal diagnoses are carried out at least once. Time between the occurrence of the event and the output of a fault signal. See section "Proof test". ISO 13849-1 was not part of the certification of the instrument. SITRANS LVL200H - Safety Manual... -
Page 7: Supplementary Information
MTTR = 8 h Configuration of the pro- A connected control and processing unit must have the following cessing unit properties: • The failure signals of the measuring system are judged according to the idle current principle • "fail low" and "fail high" signals are interpreted as a failure, where- upon the safe state must be taken on If this is not the case, the respective percentages of the failure rates must be assigned to the dangerous failures and the values stated in chapter Safety-related characteristics“ redetermined! Multiple channel archi- Due to the systematic capability SC3, this instrument can also be tecture used in multiple channel systems up to SIL3, also with a homogene- ously redundant configuration. SITRANS LVL200H - Safety Manual... - Page 8 The safety-related characteristics must be calculated especially for the selected structure of the measuring chain using the stated failure rates. In doing this, a suitable Common Cause Factor (CCF) must be considered (see IEC 61508-6, appendix D). SITRANS LVL200H - Safety Manual...
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Page 9: Setup
Adjustment instructions Adjustment elements The adjustment elements must be set according to the specified safety function: • Slide switch for changeover of the mode (min./max.) • Slide switch for changeover of the sensitivity The function of the adjustment elements is described in the operating instructions manual. During adjustment process, the safety function must be considered Please note! as unreliable! If necessary, you must take other measures to maintain the safety function. With regard to the switch on/swich off delay it must be ensured that the sum of all switching delays from the transducer to the actuator is adapted to the process safety time! The instrument must be protected against inadvertent or unauthorized adjustment! SITRANS LVL200H - Safety Manual... -
Page 10: Diagnostics And Servicing
This condition is maintained for at least 1 second. If an error is no longer detected, the safety function is performed correctly again. The diagnosis interval is specified in chapter "Safety-related charac- teristics". If failures are detected, the entire measuring system must be shut down and the process held in a safe state by other measures. The manufacturer must be informed of the occurrence of a dangerous undetected failure (incl. fault description). Repair The procedure is described in the operating instructions manual. Note Electronics exchange the instructions for setup. SITRANS LVL200H - Safety Manual... -
Page 11: Proof Test
7.2 Test 1: Without filling or dismounting the sensor • Instrument in installed condition Conditions • Output signal corresponds to the level (covered or uncovered vibrating element) • The NO contacts of the two relays connected in series must be checked separately! Procedure 1. Carry out a restart (switch the instrument off and then on again) 2. Push the min./max. switch Expected result to 1: Output signal corresponds to the level to 2: Output signal changes status Proof Test Coverage See Safety-related characteristics SITRANS LVL200H - Safety Manual... -
Page 12: Test 2: With Filling Or Dismounting Of The Sensor
Alternative 2: the instrument is dismounted; the condition "Vibrat- ing element uncovered"/"Vibrating element covered" can be changed by dipping the instrument into the original medium • Output signal corresponds to the level (covered or uncovered vibrating element) • The NO contacts of the two relays connected in series must be checked separately! Procedure 1. Push the min./max. switch 2. Filling or emptying up to the switching point or immersion into the original medium Expected result to 1: Output signal changes status to 2: Output signal corresponds to the modified level Proof Test Coverage See Safety-related characteristics SITRANS LVL200H - Safety Manual... -
Page 13: Appendix A: Test Report
Setup (…) without filling or dismounting the sensor (…) Proof test (…) with filling or dismounting the sensor Mode Sensitivity (…) Overflow protection (…) ≥ 0.7 g/cm³ (0.025 lbs/in³) (…) Dry run protection (…) ≥ 0.5 g/cm³ (0.018 lbs/in³) Test result Test step Level Expected measured Real value Test result value Confirmation Date: Signature: SITRANS LVL200H - Safety Manual... -
Page 14: Appendix B: Term Definitions
MTBF Mean Time Between Failure = MTTF + MTTR MTTF Mean Time To Failure MTTR IEC 61508, Ed1: Mean Time To Repair IEC 61508, Ed2: Mean Time To Restoration MTTF Mean Time To dangerous Failure (ISO 13849-1) Performance Level (ISO 13849-1) SITRANS LVL200H - Safety Manual... -
Page 15: 10 Supplement C: Sil Conformity
10 Supplement C: SIL conformity SITRANS LVL200H - Safety Manual... - Page 16 SITRANS LVL200H - Safety Manual...
- Page 17 Notes SITRANS LVL200H - Safety Manual...
- Page 18 Notes SITRANS LVL200H - Safety Manual...
- Page 19 Notes SITRANS LVL200H - Safety Manual...
- Page 20 For more information www.siemens.com/level www.siemens.com/weighing Siemens Canada Limited Subject to change without prior notice PD PA PI LW Rev. 0.0 1954 Technology Drive P.O. Box 4225 © Siemens AG 2018 Peterborough, ON K9J 7B1, Canada email: techpubs.smpi@siemens.com www.siemens.com/processautomation...