Danfoss DST P92S User guide

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. Qualication test........................................................................................................................................ 5

3.1 Compliance information......................................................................................................................... 5

3.2 Electromagnetic and electrical tests................................................................................................... 5

3.3 Environmental qualication................................................................................................................... 12

4. System information................................................................................................................................... 13

4.1 Functional safety classication............................................................................................................. 13

4.2 Technical data............................................................................................................................................. 14

4.3 Technical drawings..................................................................................................................................... 16

4.4 Pin congurations...................................................................................................................................... 17

4.5 Wiring diagram............................................................................................................................................ 17

4.6 Safety functions.......................................................................................................................................... 17

4.7 Diagnosis....................................................................................................................................................... 18

5. Safety requirements.................................................................................................................................. 18

5.1 Known issues............................................................................................................................................... 19

5.2 Instructions and constraints................................................................................................................... 19

5.3 Safe state....................................................................................................................................................... 19

5.4 System............................................................................................................................................................ 20

5.5 Pressure.......................................................................................................................................................... 21

5.6 Outputs.......................................................................................................................................................... 22

5.7 Decommissioning and disposal............................................................................................................ 24

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 safety requirements for the pressure transmitter DST P92S, which have to be considered and fullled within the overall safety application.

It shall be used as input for the:

• development of the overall safety

application.

• overall installation and commissioning

planning.

• overall safety validation planning.

• overall operation, maintenance and repair

planning.

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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.

RECOMMENDATION: Recommendation on how to handle certain aspects of requirements.

WARNING: Warning of faults and errors during the application development.

NOTE: A note provides additional and important information of the system behavior.

2.3 Reference

No. Description

International standard IEC 61508:2010

/1/

Functional safety of electrical, electronic and programmable electronic safety-related systems

Safety standard EN ISO 13849-1:2015

/2/

Safety of machinery - Safety-related parts of control systems

/3/ Siemens standard SN 29500: Failure rates of components

EMC standard EN 61000-4-5:2005

/4/

Electromagnetic Compatibility; testing and measurement techniques - Surge immunity test

Safety standard ISO 25119:2010 / EN 16590:2014

/5/

Tractors and machinery for agriculture and forestry - Safety-related parts of constrol system

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Safety guide | DST P92S Pressure transmitter

2.4 Abbreviations

Abbreviation Description

AgPL Agricultural Performance Level: Safety classication according to ISO 25119 / EN 16590

CCF Common Cause Failure

CRC Cyclic Redundancy Check

DC Diagnostic Coverage

DFB Digital Feedback

DTI Diagnostic Test Interval

ECU Electronic Control Unit

EEPROM Electrically Erasable Programmable ROM

EMC Electromagnetic Compatibility

FRT Fault Reaction Time

FTT Fault Tolerance Time

FS Full Scale

GND Ground

HW Hardware

I/O Input / Output

MDT Mean Downtime

MTBF Mean Time Between Failure

MTTFd Mean Time To dangerous Failure

MTTR Mean Time To Restoration

PFH Probability of dangerous Failure per Hour

PL Performance Level: Safety classication according to EN ISO 13849

PST Process Safety Time

RAM Random Access Memory

ROM Read Only Memory

SFF Safe Failure Fraction

SIL Safety Integrity Level: Safety classication according to IEC 61508

SMM Shadow Memory Module (if existing)

SN Siemens Standard

SRL Software Requirement Level

SW Software

TBD To be determined / to be dened

VCC Positive voltage supply connection

VFB Voltage Feedback

VSRC Valid Safety Relevant Conguration

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Safety guide | DST P92S Pressure transmitter

3. Qualication tests

3.1 Compliance information

Standard Description Parameter

Conformity See EU Dclaration of conformity

Certication Requirement in accordance to the EC type-approval of

the Kraftfahrt-Bundesamt KBA (KraftfahrtBundesamt)

See also Functional Safety Classication on page 9

(KBA) - Fedral Motor tTransport

Authority:

All vehicle types with a 12 V

respectively 24 V - electrical

wiring and battery(-) at the

body

According UN ECE Regulation No. 10

3.2 Electromagnetic and electrical tests

Electrical Safety

Standard Test description Test parameter

Danfoss reference Supply voltage Current variant:

Operation with U and U

= 9V DC for a duration of

min

= 32V DC

max

60 min. each.

Current variant

x x

Ratiometric voltage variant

Ratiometric voltage variant: Operation withg U and U

= 4.5V DC for a duration

min

= 5.5 V DC

max

of 50 min. each

Danfoss reference Starting prole

switch-on hysteresis

Overvoltage and hysteresis: U

t = U

max

+3%

Tes

t = 5 min.

Undervoltage and hysteresis: U

= U

Start

nom

ΔU = 0.1V U

= U

min

switch-o

Danfoss reference Broken cable

supply lines

t at U

Interruption of supply lines: Current variant: U

max

min

switch-on

= 32V

= 9V

= 5 min.

Ratiometric voltage variant: U

= 5.5V

max

= 4.5V

min

t = 60 sec.

Danfoss reference Short circuits Output signals to VCC or GND in

each case

t = 60 sec.

Danfoss reference ISO 16750-2: 2012-11

Polarity Protection

Change supply polarity: t = 5 min. Curent variant: No current limitation of supply necessary

x x

Ratiometric voltage variant: Current limiting of supply to 2A

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Safety guide | DST P92S Pressure transmitter

Standard Test description Test parameter

Danfoss reference Current

consumption

Supply current consumption without load: Current variant: I

≤ 50 mA

max

Ratiometric voltage variant: I

≤ 20 mA

max

Danfoss reference Load test 48 hours at minimum

temperature: 12 hours without operating, 36 hours with operating U

min

and l

min

48 hours at maximum

Danfoss reference ISO 16750-2: 2012-11

Insulation Resistance

temperature with operation U and I

max

Unpowered; 500V DC; 60 sec.; 50% rh; 35 °C; between Connector pins and electric

max

conductive housing without galvanic contact.

Insulation resistance > 10 MΩ

CE Conformity (EMC)

Standard Test Description Test Parameter Current

variant

DIN EN 61000-6-3 DIN EN 61326 DIN 61326-2-3

DIN EN 610000-4-2:2009-12 DIN EN 61326-1

Emission

Electrostatic Discharge (ESD)

Conducted emission: 150 kHz to 30 MHz

Radiated emission: 30 MHz to 1 GHz

Direct discharge: Contact discharge: ±2 kV, ±4 kV

Air discharge: ±2 kV, ±4 kV, ±8 k

Current variant

x x

Ratiometric voltage variant

DIN EN 61000-4-2: 2009-12 DIN EN 61326-1 Electrostatic Discharge (ESD)

DIN EN 61000-4-3: 2011-04 DIN EN 61326-1 DIN EN 61326-2-3

DIN EN 61000-4-4: 2013-04 DIN EN 61326-1 DIN EN 61326-2-3

Immunity

Burst

10 discarges per test point

Indirect discharge: (horizontal coupling-plate)

Contact discharge: ±2 kV; ±4 kV

15 discharges per test point

Indirect discharge: (vertical coupling-plate)

Contact discharge: ±2 kV; ±4 kV

15 discharges per test point

Immunity radio frequency: 80 MHz to 1 GHz (10 V/m)

1.4 GHz to 2.0 GHz (3 V/m)

2.0 GHz to 2.7 GHz (1 V/m)

3 m, horizontal and vertical

Test voltage: Supply lines: ± 2 kV Data lines: ±1 kV Duration: 5 min. Pulse form: 5/50 ns Frequency: 5 kHz Polarity: positive and negative

x x

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Safety guide | DST P92S Pressure transmitter

Standard Test Description Test Parameter Current

variant

Symmetrical coupling (L-N): Supply lines: ±0.5 kV; ±1 kV Coupling: 2 Ω / 18 µF

DIN EN 61000-4-5: 2007-06 DIN EN 61326-1 DIN 61326-2-3

DIN EN 610000-4-6: 2014 DIN EN 61326-1 DIN EN 61326-2-3

DIN EN 61000-4-8 DIN EN 61326-1 DIN EN 61326-2-3

DIN EN 61000-4-8 DIN EN 61326-3-1 DIN EN 61326-1 DIN EN 61326-2-3

Surge

Immunity

Power Frequency Magnetic Fields

Unsymmetrical coupling (L-PE, N-PE, LN-PE): Supply lines: ±0.5 kV; ±1 kV, ±2 kV Signal lines: not required, cable length <30 m

Coupling: 12 Ω / 9 µF

Number of repeats: 5

Conducted disturbances

0.15 mHz – 80 MHz, 3 V, 80% AM sine wave 1 kHz

50 Hz / 60 Hz 30 A/m 60 sec. for each axis

EMC (Automotive)

Standard Test Description Test Parameter Current

variant

Articial network (AN): 150 kHz to 108 MHz, 1 m, 120 kHz bandwidth class 3

Ratiometric voltage variant

x -

x x

Ratiometric voltage variant

x x

CISPR 25/ECE R10 Emission

ISO 11452-2: 2004-11 Immunity

ISO 11452-4: 2011-12 Immunity

ISO 7637-2: 2004-09 Emission

Road vehicles, electrical disturbance by conduction

ISO 7637-2: 2004-09

and coupling (data, signal), test level 4 Test level 4 for 12 V and 24V systems

Road vehicles, electrical disturbance by conduction and coupling (data, signal), test level 4 Test level 4 for 12 V and 24V systems

Antenna measurement (RE): 160 kHz to 30 MHz, 1 m, 9 kHz bandwidth class 4 30MHz to 1 GHz, 1 m, 120 kHz bandwidth class 3 1 GHz to 2.5 GHz, 1 m, 120 kHz bandwidth class 5

Absorber lined chamber: 200 MHz to 2 GHz, 200 V/m CW, AM (1 kHz/80%), PM (577 us duration, 217 Hz repetition rate)

BCI: 20 MHz to 400 MHz, 200 mA, AM, (1 kHz, 80%)

Transient emissions on supply cables (12 V system) Severity level:III: +75 V, -100 V

Transient emissions on supply cables (24 V system) Severity level III: +150 V, -450 V

Pulse 1 (12 V system): -150 V, 5000 pulses Severity level: IV

Pulse 1 (24 V system): -600 V, 5000 pulses Severity level: IV

Pulse 2a (12 V system): +50 V, 5000 pulses Severity level: IV

x x

x -

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Safety guide | DST P92S Pressure transmitter

Standard Test Description Test Parameter Current

variant

Road vehicles, electrical disturbance by conduction

ISO 7637-2: 2004-09

ISO 7637-3: 2007-07 Immunity

and coupling (data, signal), test level 4 Test level 4 for 12 V and 24V systems

Road vehicles, electrical disturbance by conduction and coupling (data, signal), test level 4 Test level 4 for 12 V and 24V systems

Pulse 2a (24 V system): +50 V, 5000 pulses Severity level: IV

Pulse 2b (12 V system): +10 V, 10 pulses Severity level: IV

Pulse 2b (24 V system): +20 V, 10 pulses Severity level: IV

Pulse 3a (12 V system): -150 V, 1 hour Severity level: IV

Pulse 3a (24 V system): -200 V, 1 hour Severity level: IV

Pulse 3b (12V system):+100 V, 1 hour Severity level: IV

Pulse 3b (24 V system):+200 V, 1 hour Severity level: IV

Pulse 4 (12V system):-7 V, 1 pulse Severity level: IV

Pulse 4 (24V system):-16 V, 1 pulse Severity level: IV

Capacitive coupling (CCC) 12 V system test level: IV (-110 V) Test ime: 10 min.

24 V system Test level: IV (-150 V) test time: 10 min.

Ratiometric voltage variant

x -

x x

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