SIL 2 Powered Isolating Driver Hart, DIN-Rail and Termination Board

24 Vdc

1

The single channel Isolating Driver, D5020S (D5020D double channel also available) is a high integrity analog output interface suitable for applications requiring SIL 2 level (according to IEC 61508) in safety related systems for high risk industries.
It isolates and transfers a 4-20 mA signal from a controller located in Safe Area to a load up to 700 Ω in Hazardous Area. It has a high output capacity of 15 V at 20 mA combined with a low drop across its input terminals.
The circuit allows bi-directional communication signals, for Hart positioner.
In the 4-20 mA input range, a field open or short circuit, reflects a high impedance to the control device circuit and actuates (de-energizes) the channel Fault output transistor and actuates (energizes) the cumulative Fault output available on Power Bus connector.
Fault output signal for each channel is available when mounted on customized Termination Board. In addition the single channel D5020S provides open collector
transistor output on terminal blocks. Short circuit fault detection can be enabled (two different levels can be selected) or
disabled via DIP-Switch programming.
Mounting on standard DIN-Rail, with or without Power Bus, or on customized Termination Boards, in Safe Area or in Zone 2.

• 2 fully independent channels (model D5020D).
• Output to Zone 0 (Zone 20), installation in Zone 2.
• 4-20 mA Input, Output Signal.
• Hart compatible.
• Field open and short circuit detection and signaling for each channel and cumulative.
• High Accuracy.
• Three port isolation, Input/Output/Supply.
• EMC Compatibility to EN61000-6-2, EN61000-6-4, EN61326-1, EN61326-3-1 for safety system.
• In-field programmability by DIP Switch.
• ATEX, IECEx Certifications.
• High Density, two channels per unit.
• Simplified installation using standard DIN-Rail and plug-in terminal blocks, with or without Power Bus, or customized Termination Boards.
• 250 Vrms (Um) max. voltage allowed to the instruments associated with the barrier.

D5020S, in accordo agli standard IEC 61508 e IEC 61511, è adatto per applicazioni fino a un livello di integrità della sicurezza SIL 2 .
• SIL 2 according to IEC 61508 for Tproof = 3 / 6 yrs (10 / 20 % of total SIF).
Scaricate il data sheet o il Manuale di Sicurezza Funzionale per maggiori dettagli.