User Documentation
Table Of Contents
- 1.1 Revision history
- 1.2 Validity
- 1.3 Contact address
- Table of contents
- 2. Observed standards
- 3. Acronyms and abbreviations
- 4. Purpose of the product
- 5. Assumptions and restrictions for use of the product
- 6. Functional specification of the safety functions
- 7. Functional specification of the non-safety functions
- 8. Safety parameters
- 9. Failure category SIL 2
- 10. Hardware and software configuration
- 11. Periodic proof test procedure
- 12. Procedures to repair or replace the product
- 13. Maintenance
- 14. Connection diagram
Purpose of the product
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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. Error events, including cable
breakage, are monitored and signaled via the individual status relay.
The FDT/DTM software can be used to show the actual process value and alter the set point for high and
low limit. The ACT20X-(2)SAI-(2)HAO has been designed, developed and certified for use in SIL 2
applications according to the requirements of IEC 61508.