ماژول ورودی دیجیتال ABB مدل DIS850، کد فنی 3BSE078774R1

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 (3BSE078774R1)