ABB DIS850 Compact Product Suite hardware selector

Select I/O is an Ethernet networked, single-channel granular I/O

system for the ABB Ability™ System 800xA automation platform.

Select I/O helps decouple project tasks, minimizes the impact of

late changes, and supports standardization of I/O cabinetry

ensuring automation projects are delivered on time and under

budget. A Signal Conditioning Module (SCM) performs the

necessary signal conditioning and powering of the connected field

device for one I/O channel.

The DIS850 is a Digital Input Signal Conditioning Module for use in

intrinsically safe applications (Zone 0) supporting 2-wire NAMUR

field devices with Sequence of Events (SOE).

Features and benefits

• Digital input for 2-wire field devices (NAMUR proximity switches and contacts according to EN

60947-5-6)

• Can be used in hazardous areas providing IS signals up to Zone 0

• 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)

• DIS850 supports both Normally Open (NO) and Normally Closed (NC) 24 V loops

• 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