ACT20X-(2)SAI-(2)HAO HART transparent current output isolator Safety Manual
1.1 Revision history Version Date Change 00 04/2014 First Edition 01 11/2017 Products added 1.2 Validity This manual is valid for the following products: Device Type version Order number 2 ACT20X-SAI-HAO-S 8965450000 2 ACT20X-2SAI-2HAO-S 8965460000 2 ACT20X-SAI-HAO-P 2 ACT20X-2SAI-2HAO-P 2456170000 1.3 Contact address 2456160000 Weidmüller Interface GmbH & Co. KG Klingenbergstraße 16 32758 Detmold Germany T +49 5231 14-0 F +49 5231 14-292083 www.weidmueller.com 1482850000/01/11.
Table of contents Table of contents 1.1 Revision history ................................................................................................................................ 3 1.2 Validity ................................................................................................................................................ 3 1.3 Contact address ................................................................................................................................
Observed standards 2. Observed standards Standard Description IEC 61508 Functional safety of electrical / electronic / programmable electronic safetyrelated systems IEC 61508-2:2000 Part 2: 1482850000/01/11.
Acronyms and abbreviations 3. Acronyms and abbreviations Acronym / Abbreviation Designation Element Description Term defined by IEC 61508 as “part of a subsystem comprising a single component or any group of components that performs one or more element safety functions”. PFD Probability of Failure on Demand This is the likelihood of dangerous safety function failures occurring on demand.
Purpose of the product 4. Purpose of the product The ACT20X-SAI-HAO is an one channel, the ACT20X-2SAI-2HAO is a two channel HART transparent, galvanic isolator of 4...20 mA current signals between hazardous areas and non-classified areas. The device can be mounted in the safe areas and in Zone 2 / Division 2 and drive a 4...20 mA current signal into Zone 0, 1, 2, 20, 21, 22 and mines or Class I/II/III, Division 1, Group A-G.
Assumptions and restrictions for use of the product 5. Assumptions and restrictions for use of the product 5.1 Basic safety specifications Operational temperature range: -20...+60 °C Storage temperature range: -20...+85 °C Power supply type: Double or reinforced Supply voltage: 19.2...31.2 V DC Mounting area: Zone 2 & Class I, Division 2 or safe area Mounting environment: Pollution degree 2 or better, Overvoltage category II 5.
Functional specification of the safety functions 6. Functional specification of the safety functions Galvanic isolation of 4...20 mA current signals, between hazardous areas and non-classified areas or Zone 2, Division 2, within the specified accuracy. 1482850000/01/11.
Functional specification of the non-safety functions 7. Functional specification of the non-safety functions The status relay (terminal 53 and 54) and LED outputs are not suitable for use in any Safety Instrumented Function. The displayed value in the FDT/DTM software and any possible parameterization by the FDT/DTM software does not affect the safety function of the ACT20X-(2)SAI-(2)HAO. Also the HART transparency of the device is not a safety function. 10 1482850000/01/11.
Safety parameters 8. Safety parameters Safety parameter Ex output SIL2 Proof-test interval (Tproof), (10 % of loop PFD) 5 years Safe Failure Fraction (SFF) 85 % Demand mode High Demand rate (see note 1) Mean Time To Repair (MTTR) 24 h Hardware Fault Tolerance (HFT) 0 Component type A (see note 2) SIL capability SIL 2 Description of the “safe state” Output ≤ 3.6 mA or output ≥ 21 mA Note 1: Depends on detection time in external controller.
Failure category SIL 2 9. Failure category SIL 2 Failure rates according to IEC 61508 Total failure rate for dangerous detected failures (λDD) 127 FIT Total failure rate for dangerous undetected failures (λDU) 48 FIT Total failure rate for all safe failures (λSafe) 164 FIT -9 -1 FIT = 10 h (Failure in time) 12 1482850000/01/11.
Hardware and software configuration 10. Hardware and software configuration All configurations of software and hardware versions are fixed from factory and cannot be changed by enduser or reseller. This manual only covers products labeled with the product version (or range of versions) specified on the front page. 1482850000/01/11.
Periodic proof test procedure 11. Periodic proof test procedure Step Action 1 Bypass the safety PLC or take other appropriate action to avoid a false trip. 2 Connect a simulator identical to the input setup. 3 Apply input value corresponding to 0/100 % output range to each channel. 4 Observe whether the output channel acts as expected. 5 Restore the input terminals to full operation. 6 Remove the bypass from the safety PLC or otherwise restore normal operation.
Procedures to repair or replace the product 12. Procedures to repair or replace the product Any failures that are detected and that compromise functional safety should be reported to the sales department at Weidmüller Interface GmbH & Co. KG. Repair of the device and replacement of circuit breakers must be done by Weidmüller Interface GmbH & Co. KG only. 1482850000/01/11.
Maintenance 13. Maintenance No maintenance required. 16 1482850000/01/11.
Connection diagram 14. Connection diagram 14.1 Application Zone 0, 1, 2, 20, 21, 22, M1 & Class I/II/III, Division 1, Group A-G 1482850000/01/11.
Connection diagram 14.2 Electrical connections Terminal Function 11 Out – 12 Out + Connector Ex output channel 1 13 14 21 Out – 22 Out + Ex output channel 2 23 24 41 In – 42 In + 43 In – 44 In + input channel 1 input channel 2 51 52 GND 19.2…31.2 V power supply 3W + 53 NC 54 COM status relay 18 1482850000/01/11.
Weidmüller Interface GmbH & Co. KG Klingenbergstraße 16 32758 Detmold Germany T +49 5231 14-0 F +49 5231 14-292083 www.weidmueller.com Order Number: 1482850000/01/11.
