Line input monitoring in-field DIP Switch selectable
Driving input voltage monitoring
Line and Load short/open circuit detection
Solenoid resistance measurement even in presence of serial connected diodes
RMS measurement of voltage and current supplied to the load via relay contacts
DC earth leakage detection on both ac phases
Voltage to the load is measured before and during load energization
Automatic acquisition of voltage, current and solenoid resistance values at start up phase
4 A SIL 3 contacts for NE load
6 A inrush current at 24 Vdc / 250 Vac
EMC Compatibility to EN61000-6-2, EN61000-6-4, EN61326-1, EN61326-3-1 for safety system
ATEX, IECEx Certifications
Simplified installation using standard DIN-Rail and plug-in terminal blocks, with or withoutPower Bus, or customized Termination Boards
Patent pending for Differential Current Resistance Measuring Technique.
The D5293S is a relay module suitable for the switching of safety related circuits, up to SIL 3 level according to IEC 61508:2010 Ed.2 , for high risk industries. It provides isolation between input and output contacts. Line input monitoring, to allow DCS/PLC line monitoring function, can be enabled or disabled by DIP-Switch programming; when enabled the module permits a wide compatibility to DCS/PLC manufacturer. Input line pulse testing, executed by DCS/PLC, is permitted by a dedicated internal circuit, to prevent relay and LED flickering.
A low voltage input monitor is also provided to reflect a high impedance state to the control unit when the driving voltage is below the specified threshold. D5293S provides 1+1 SPST contact for normally energized load. SIL 3 Safety Function for NE load (de-energized in fail safe state) is available at Terminal Blocks 13-14; When the driving signal is high (24 Vdc), the relay is energized (normal state), SIL 3 contacts at terminals 13-15 and 14-16 are closed, the load is energized.