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ISO

9001

PL e

Functional Safety

Relay Module

KFD2-RSH-1.2D.FL2,

KFD2-RSH-1.2D.FL3

PROCESS AUTOMATION

ORIGINAL INSTRUCTIONS

Содержание KFD2-RSH-1.2D.FL2

Страница 1: ...ISO9001 PL e 3 Functional Safety Relay Module KFD2 RSH 1 2D FL2 KFD2 RSH 1 2D FL3 PROCESS AUTOMATION ORIGINAL INSTRUCTIONS...

Страница 2: ...Products and Services of the Electrical Industry published by the Central Association of the Electrical Industry Zentralverband Elektrotechnik und Elektroindustrie ZVEI e V in its most recent version...

Страница 3: ...Standards and Directives for Functional Safe 8 3 Planning 9 3 1 System Structure 9 3 2 Assumptions 10 3 3 Safety Function and Safe State 11 3 4 Characteristic Safety Values 12 3 5 Useful Lifetime 13 4...

Страница 4: ...tion Maintenance and repair Troubleshooting Dismounting Disposal The documentation consists of the following parts Present document Instruction manual Manual Datasheet Additionally the following parts...

Страница 5: ...ave read and understood the instruction manual and the further documentation Intended Use The device is only approved for appropriate and intended use Ignoring these instructions will void any warrant...

Страница 6: ...essages are displayed in descending order as follows Informative Symbols Action This symbol indicates a paragraph with instructions You are prompted to perform an action or a sequence of actions Dange...

Страница 7: ...se or an external current limitation KFD2 RSH 1 2D FL2 The device is a relay module that is suitable for safely switching applications of a load circuit The device isolates load circuits up to 60 V DC...

Страница 8: ...Functional safety of electrical electronic programmable electronic safety related systems manufacturer Machinery Directive 2006 42 EC EN ISO 13849 part 1 edition 2015 Safety related parts of control s...

Страница 9: ...usually the demand rate for this safety loop is assumed to be higher than once per year The relevant safety parameters to be verified are the PFH value Probability of dangerous Failure per Hour Fault...

Страница 10: ...signal current of at least 100 mA Observe for the high demand mode the useful lifetime limitations of the output relays The relay contacts must be protected against overcurrent with a suitable current...

Страница 11: ...06 11 3 3 Safety Function and Safe State Safety Function Whenever the input of the device is de energized the DTS output is not conducting Safe State In the safe state of the safety function the DTS o...

Страница 12: ...nction Exceptions are common cause failures that disrupt all three relays While the diagnostic function is signaling the failure the probability of a dangerous undetected failure for the remaining two...

Страница 13: ...ures are detected to a huge percentage during the installation and therefore the assumption of a constant failure rate during the useful lifetime is valid However according to IEC EN 61508 2 a useful...

Страница 14: ...n To avoid contact welding we recommend using a serial fuse in the load circuit The device is delivered with a replaceable fuse Replace this fuse only with a fuse up to 5 AT Optionally use an unfused...

Страница 15: ...FD2 RSH 1 2D FL3 Mounting and Installation 2018 06 15 4 3 1 Output Configuration Switch Line fault detection Internal fault detection S1 S2 Off Off disabled disabled On Off enabled disabled Off On not...

Страница 16: ...ass the safety function Do not repair modify or manipulate the device Danger Danger to life from faulty or missing fuse protection of the relay contacts Faulty or missing fuse protection of the relay...

Страница 17: ...cessary to ensure a complete diagnosis You have 2 options to achieve the diagnostic coverage see step 2 or 3 Internal Diagnosis Procedure 1 Enable the internal fault detection See chapter 4 3 1 2 Swit...

Страница 18: ...define the type of proof test and the interval time period Conditions If the conditions are met you can also check the device in the application Proof Test Procedure 1 Enable the internal fault detec...

Страница 19: ...is off 1 7 V 24 V DC between terminals 7 and 8 8 Wait at least 2 seconds LED OUT is on LED FLT is off 1 9 V 0 V DC between terminals 7 and 8 10 Wait at least 2 seconds LED OUT is off LED FLT is off 1...

Страница 20: ...pole switching In the standard application the process control system is connected to terminals 7 and 8 The line fault transparency LFT of the safety relay must be compatible with the line fault detec...

Страница 21: ...indication output of the device may be put in series to the input See figure Figure 5 2 Application with fault indication output in the signal loop of the dual pole switching If the fault indication o...

Страница 22: ...cautions Secure the application against accidental restart 3 Do not repair a defective device A defective device must only be repaired by the manufacturer 4 Replace a defective device only by a device...

Страница 23: ...FT Hardware Fault Tolerance MTBF Mean Time Between Failures MTTR Mean Time To Restoration PCS Process Control System PFDavg Average Probability of dangerous Failure on Demand PFH Average frequency of...

Страница 24: ...rl fuchs com Worldwide Headquarters Pepperl Fuchs GmbH 68307 Mannheim Germany Tel 49 621 776 0 E mail info de pepperl fuchs com For the Pepperl Fuchs representative closest to you check www pepperl fu...