Safety guide
Pressure transmitter SIL-2
DST P92S
ia.danfoss.com
Safety guide | DST P92S Pressure transmitter
Table of contents Contents
1. |
Introduction ................................................................................................................................................. |
2 |
2. |
General information.................................................................................................................................. |
3 |
2.1 |
Contact........................................................................................................................................................... |
3 |
2.2 |
Used symbols and format........................................................................................................................ |
3 |
2.3 |
Reference....................................................................................................................................................... |
3 |
2.4 |
Abbreviations............................................................................................................................................... |
4 |
3. |
Qualification test........................................................................................................................................ |
5 |
3.1 |
Compliance information......................................................................................................................... |
5 |
3.2 |
Electromagnetic and electrical tests................................................................................................... |
5 |
3.3 |
Environmental qualification................................................................................................................... |
12 |
4. |
System information................................................................................................................................... |
13 |
4.1 |
Functional safety classification............................................................................................................. |
13 |
4.2 |
Technical data............................................................................................................................................. |
14 |
4.3 |
Technical drawings..................................................................................................................................... |
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4.4 |
Pin configurations...................................................................................................................................... |
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4.5 |
Wiring diagram............................................................................................................................................ |
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4.6 |
Safety functions.......................................................................................................................................... |
17 |
4.7 |
Diagnosis....................................................................................................................................................... |
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5. |
Safety requirements.................................................................................................................................. |
18 |
5.1 |
Known issues............................................................................................................................................... |
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5.2 |
Instructions and constraints................................................................................................................... |
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5.3 |
Safe state....................................................................................................................................................... |
19 |
5.4 |
System............................................................................................................................................................ |
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5.5 |
Pressure.......................................................................................................................................................... |
21 |
5.6 |
Outputs.......................................................................................................................................................... |
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5.7 |
Decommissioning and disposal............................................................................................................ |
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5.8 |
Security.......................................................................................................................................................... |
24 |
6. |
Transport and storage............................................................................................................................... |
24 |
7. |
Maintenance................................................................................................................................................. |
24 |
8. |
Mounting....................................................................................................................................................... |
24 |
9. |
Dismounting................................................................................................................................................. |
25 |
1. |
Introduction |
This document includes system information and |
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safety requirements for the pressure transmitter |
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DST P92S, which have to be considered and |
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fulfilled within the overall safety application. |
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It shall be used as input for the: |
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development of the overall safety |
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application. |
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overall installation and commissioning |
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planning. |
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overall safety validation planning. |
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overall operation, maintenance and repair |
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planning. |
2 | © Danfoss | DCS (im) | 2020.01 |
IC.PS.P21.2A.02 | 520B7782 |
Safety guide | DST P92S Pressure transmitter
2. General information 2.1 Contact
Danfoss A/S
Industrial Automation
DK-6430 Nordborg
Denmark
www.ia.danfoss.com
E-mail: technical support_IA@danfoss.com
2.2 Used symbols and formats
REQIREMENT:
Requirement which shall be adhered to maintain safe system operations.
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RECOMMENDATION: |
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Recommendation on how to handle |
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certain aspects of requirements. |
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WARNING: |
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Warning of faults and errors during |
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the application development. |
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NOTE: |
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A note provides additional and |
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important information of the system |
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behavior. |
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2.3 |
Reference |
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No. |
Description |
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/1/ |
International standard IEC 61508:2010 |
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Functional safety of electrical, electronic and programmable electronic safety-related systems |
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Safety standard EN ISO 13849-1:2015 |
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Safety of machinery - Safety-related parts of control systems |
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Siemens standard SN 29500: Failure rates of components |
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EMC standard EN 61000-4-5:2005 |
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Electromagnetic Compatibility; testing and measurement techniques - Surge immunity test |
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/5/ |
Safety standard ISO 25119:2010 / EN 16590:2014 |
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Tractors and machinery for agriculture and forestry - Safety-related parts of constrol system |
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© Danfoss | DCS (im) | 2020.01 |
IC.PS.P21.2A.02 | 520B7782 | 3 |
Safety guide | DST P92S Pressure transmitter
2.4 Abbreviations
Abbreviation |
Description |
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AgPL |
Agricultural Performance Level: Safety classification according to ISO 25119 / EN 16590 |
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CCF |
Common Cause Failure |
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CRC |
Cyclic Redundancy Check |
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DC |
Diagnostic Coverage |
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DFB |
Digital Feedback |
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DTI |
Diagnostic Test Interval |
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ECU |
Electronic Control Unit |
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EEPROM |
Electrically Erasable Programmable ROM |
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EMC |
Electromagnetic Compatibility |
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FRT |
Fault Reaction Time |
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FTT |
Fault Tolerance Time |
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FS |
Full Scale |
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GND |
Ground |
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HW |
Hardware |
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I/O |
Input / Output |
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MDT |
Mean Downtime |
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MTBF |
Mean Time Between Failure |
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MTTFd |
Mean Time To dangerous Failure |
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MTTR |
Mean Time To Restoration |
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PFH |
Probability of dangerous Failure per Hour |
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PL |
Performance Level: Safety classification according to EN ISO 13849 |
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PST |
Process Safety Time |
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RAM |
Random Access Memory |
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ROM |
Read Only Memory |
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SFF |
Safe Failure Fraction |
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SIL |
Safety Integrity Level: Safety classification according to IEC 61508 |
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SMM |
Shadow Memory Module (if existing) |
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SN |
Siemens Standard |
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SRL |
Software Requirement Level |
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SW |
Software |
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TBD |
To be determined / to be defined |
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VCC |
Positive voltage supply connection |
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VFB |
Voltage Feedback |
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VSRC |
Valid Safety Relevant Configuration |
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4 | © Danfoss | DCS (im) | 2020.01 |
IC.PS.P21.2A.02 | 520B7782 |
Safety guide | DST P92S Pressure transmitter
3. |
Qualification tests |
3.1 Compliance information |
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Standard |
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Parameter |
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Conformity |
See EU Dclaration of conformity |
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Certification |
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Requirement in accordance |
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to the EC type-approval of |
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E 1 |
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the Kraftfahrt-Bundesamt |
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KBA (Kraftfahrt- |
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(KBA) - Fedral Motor tTransport |
According UN ECE Regulation No. 10 |
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Bundesamt) |
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Authority: |
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All vehicle types with a 12 V |
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respectively 24 V - electrical |
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wiring and battery(-) at the |
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body |
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See also Functional Safety Classification on page 9 |
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3.2 Electromagnetic and electrical tests |
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Electrical Safety |
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Current |
Ratiometric |
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Standard |
Test description |
Test parameter |
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voltage |
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variant |
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variant |
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Danfoss reference |
Supply voltage |
Current variant: |
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x |
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Operation with Umax = 32V DC |
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and Umin = 9V DC for a duration of |
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60 min. each. |
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Ratiometric voltage variant: |
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Operation withg Umax = 5.5 V DC |
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and Umin = 4.5V DC for a duration |
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of 50 min. each |
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Danfoss reference |
Starting profile |
Overvoltage and hysteresis: |
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x |
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switch-on |
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UTest = Umax +3% |
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hysteresis |
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t = 5 min. |
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Undervoltage and hysteresis: |
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UStart = Unom |
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ΔU = 0.1V |
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Umin = Uswitch-off |
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t at Uswitch-on = 5 min. |
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Danfoss reference |
Broken cable |
Interruption of supply lines: |
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x |
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supply lines |
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Current variant: |
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Umax = 32V |
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Umin = 9V |
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Ratiometric voltage variant: |
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Umax = 5.5V |
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Umin = 4.5V |
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t = 60 sec. |
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Danfoss reference |
Short circuits |
Output signals to VCC or GND in |
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x |
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each case |
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t = 60 sec. |
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Danfoss reference |
Polarity |
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Change supply polarity: |
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x |
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ISO 16750-2: |
Protection |
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t = 5 min. |
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2012-11 |
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Curent variant: |
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No current limitation of supply |
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necessary |
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Ratiometric voltage variant: |
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Current limiting of supply to 2A |
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© Danfoss | DCS (im) | 2020.01 |
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IC.PS.P21.2A.02 | 520B7782 | 5 |
Safety guide | DST P92S Pressure transmitter
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Current |
Ratiometric |
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Standard |
Test description |
Test parameter |
voltage |
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variant |
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variant |
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Danfoss reference |
Current |
Supply current consumption |
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consumption |
without load: |
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Current variant: |
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Imax ≤ 50 mA |
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Ratiometric voltage variant: |
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Imax ≤ 20 mA |
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Danfoss reference |
Load test |
48 hours at minimum |
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x |
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temperature: |
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12 hours without operating, 36 |
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hours with operating Umin and lmin |
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48 hours at maximum |
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temperature with operation Umax |
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and Imax |
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Danfoss reference |
Insulation |
Unpowered; 500V DC; 60 |
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ISO 16750-2: |
Resistance |
sec.; 50% rh; 35 °C; between |
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2012-11 |
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Connector pins and electric |
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conductive housing without |
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galvanic contact. |
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Insulation resistance > 10 MΩ |
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CE Conformity (EMC)
Standard |
Test Description |
Test Parameter |
Current |
Ratiometric |
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variant |
voltage |
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variant |
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DIN EN 61000-6-3 |
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Conducted emission: 150 kHz to 30 MHz |
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DIN EN 61326 |
Emission |
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DIN 61326-2-3 |
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Radiated emission: 30 MHz to 1 GHz |
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Direct discharge: |
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x |
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Contact discharge: |
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±2 kV, ±4 kV |
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DIN EN 610000-4-2:2009-12 |
Electrostatic Discharge (ESD) |
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DIN EN 61326-1 |
Air discharge: |
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±2 kV, ±4 kV, ±8 k |
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10 discarges per test point |
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Indirect discharge: |
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DIN EN 61000-4-2: 2009-12 |
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(horizontal coupling-plate) |
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DIN EN 61326-1 |
Electrostatic Discharge (ESD) |
Contact discharge: ±2 kV; ±4 kV |
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15 discharges per test point |
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Indirect discharge: |
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x |
DIN EN 61000-4-2: 2009-12 |
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(vertical coupling-plate) |
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DIN EN 61326-1 |
Electrostatic Discharge (ESD) |
Contact discharge: ±2 kV; ±4 kV |
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15 discharges per test point |
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Immunity radio frequency: |
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DIN EN 61000-4-3: 2011-04 |
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80 MHz to 1 GHz (10 V/m) |
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1.4 GHz to 2.0 GHz (3 V/m) |
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DIN EN 61326-1 |
Immunity |
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2.0 GHz to 2.7 GHz (1 V/m) |
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DIN EN 61326-2-3 |
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3 m, horizontal and vertical |
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Test voltage: |
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Supply lines: ± 2 kV |
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DIN EN 61000-4-4: 2013-04 |
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Data lines: ±1 kV |
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DIN EN 61326-1 |
Burst |
Duration: 5 min. |
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DIN EN 61326-2-3 |
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Pulse form: 5/50 ns |
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Frequency: 5 kHz |
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Polarity: positive and negative |
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6 | © Danfoss | DCS (im) | 2020.01 |
IC.PS.P21.2A.02 | 520B7782 |
Safety guide | DST P92S Pressure transmitter
Standard |
Test Description |
Test Parameter |
Current |
Ratiometric |
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variant |
voltage |
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variant |
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Symmetrical coupling (L-N): |
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- |
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Supply lines: ±0.5 kV; ±1 kV |
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Coupling: 2 Ω / 18 µF |
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DIN EN 61000-4-5: 2007-06 |
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Unsymmetrical coupling (L-PE, N-PE, LN-PE): |
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DIN EN 61326-1 |
Surge |
Supply lines: ±0.5 kV; ±1 kV, ±2 kV |
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DIN 61326-2-3 |
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Signal lines: not required, cable length <30 m |
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Coupling: 12 Ω / 9 µF |
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Number of repeats: 5 |
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DIN EN 610000-4-6: 2014 |
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Conducted disturbances |
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DIN EN 61326-1 |
Immunity |
0.15 mHz – 80 MHz, 3 V, 80% AM sine wave 1 kHz |
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DIN EN 61326-2-3 |
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DIN EN 61000-4-8 |
Power Frequency |
50 Hz / 60 Hz |
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DIN EN 61326-1 |
30 A/m |
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Magnetic Fields |
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DIN EN 61326-2-3 |
60 sec. for each axis |
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DIN EN 61000-4-8 |
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50 Hz / 60 Hz |
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DIN EN 61326-3-1 |
Power Frequency |
30 A/m |
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DIN EN 61326-1 |
Magnetic Fields |
60 sec. for each axis |
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DIN EN 61326-2-3 |
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EMC (Automotive) |
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Standard |
Test Description |
Test Parameter |
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Current |
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Ratiometric |
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variant |
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voltage |
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variant |
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Artificial network (AN): |
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x |
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150 kHz to 108 MHz, 1 m, 120 kHz bandwidth class 3 |
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CISPR 25/ECE R10 |
Emission |
Antenna measurement (RE): |
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160 kHz to 30 MHz, 1 m, 9 kHz bandwidth class 4 |
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30MHz to 1 GHz, 1 m, 120 kHz bandwidth class 3 |
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1 GHz to 2.5 GHz, 1 m, 120 kHz bandwidth class 5 |
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Absorber lined chamber: |
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x |
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ISO 11452-2: 2004-11 |
Immunity |
200 MHz to 2 GHz, 200 V/m |
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CW, AM (1 kHz/80%), PM (577 us duration, 217 Hz |
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repetition rate) |
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ISO 11452-4: 2011-12 |
Immunity |
BCI: |
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x |
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x |
20 MHz to 400 MHz, 200 mA, AM, (1 kHz, 80%) |
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ISO 7637-2: 2004-09 |
Emission |
Transient emissions on supply cables (12 V system) |
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x |
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- |
Severity level:III: +75 V, -100 V |
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ISO 7637-2: 2004-09 |
Emission |
Transient emissions on supply cables (24 V system) |
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x |
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- |
Severity level III: +150 V, -450 V |
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Road vehicles, electrical |
Pulse 1 (12 V system): -150 V, 5000 pulses |
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x |
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- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 1 (24 V system): -600 V, 5000 pulses |
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x |
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- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 2a (12 V system): +50 V, 5000 pulses |
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x |
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- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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© Danfoss | DCS (im) | 2020.01 |
IC.PS.P21.2A.02 | 520B7782 | 7 |
Safety guide | DST P92S Pressure transmitter
Standard |
Test Description |
Test Parameter |
Current |
Ratiometric |
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variant |
voltage |
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variant |
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Road vehicles, electrical |
Pulse 2a (24 V system): +50 V, 5000 pulses |
x |
- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 2b (12 V system): +10 V, 10 pulses |
x |
- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 2b (24 V system): +20 V, 10 pulses |
x |
- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 3a (12 V system): -150 V, 1 hour |
x |
- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 3a (24 V system): -200 V, 1 hour |
x |
- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 3b (12V system):+100 V, 1 hour |
x |
- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 3b (24 V system):+200 V, 1 hour |
x |
- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 4 (12V system):-7 V, 1 pulse |
x |
- |
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disturbance by conduction |
Severity level: IV |
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Road vehicles, electrical |
Pulse 4 (24V system):-16 V, 1 pulse |
x |
- |
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disturbance by conduction |
Severity level: IV |
|
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ISO 7637-2: 2004-09 |
and coupling (data, signal), test |
|
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level 4 |
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Test level 4 for 12 V and 24V |
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systems |
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Capacitive coupling (CCC) |
x |
x |
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12 V system |
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test level: IV (-110 V) |
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Test ime: 10 min. |
|
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ISO 7637-3: 2007-07 |
Immunity |
24 V system |
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Test level: IV (-150 V) |
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test time: 10 min. |
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8 | © Danfoss | DCS (im) | 2020.01 |
IC.PS.P21.2A.02 | 520B7782 |