DIS880

System 800xA offers flexible and modular I/O solutions through fieldbus technologies, wireless I/O and hardwired I/O systems like S800 and S900. The system is now enhanced with Select I/O that allows to condition each signal coming from the field individually. Select I/O is Ethernet connected and consist of single channel granular Signal Conditioning Modules (SCM).

DIS880 a Digital Input 24V Signal Conditioning Module High Integrity for 2/3/4-wire devices. Sequence of Events (SOE) enabled. Certified for SIL3.

Features and benefits

• Digital input for 2-wire, 3-wire and externally powered 4-wire field devices
• Can be used in hazardous areas
• Field device power output current limited to 30 mA
• Channel to channel galvanic isolation
• Configurable software signal filter 0...100 ms
• Protected against wrong wiring

• Diagnostics:
– Loop supervision (open circuit and short circuit)
– Hardware error supervision
– Communication supervision
– Internal power supervision

• Sequence of Events (SoE)
• DIS880 supports both Normally Open (NO) and Normally Closed (NC) 24 V loops and both will confirm to SIL3.

• Single loop granularity - each SCM handles a single channel
• Supports hot swap
• Mechanical locking slider which turns off field device power and/or output before removal
• Field disconnect function which can galvanically separate the field loop wiring from the SCM during commissioning and maintenance
• All SCMs have electronic current limitation
• Mechanical keying to prevent insertion of wrong module type after commissioning
• 24V DC powered through Modulebus
• Configurable through parameters
• LED indicators on the SCM indicate the operational state of the module
• Certified for SIL3