Product Overview

• PN: 57160001-KX
• Model alias: DSDO131
• Brand: ABB
• Series: Advant OCS / MOD30 old generation distributed control system
• Type: Rack-mounted Relay Digital Output Unit

• Function: Receives switching commands from system main controller via backplane MB300 bus, converts internal control signals into contact switch signals through onboard relays. It directly drives field solenoid valves, AC/DC contactors, alarm lamps and small execution equipment, realizes equipment interlock, sequence action and safety protection logic. Adopts complete electrical isolation between internal control circuit and field load side to avoid field circuit faults damaging the DCS rack backplane and main control board.

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Core Features

• 16 independent mechanical relay output channels, each channel with separate isolation protection
• Wide voltage compatibility, single channel supports 0~240V AC and DC universal load access
• Clear LED status indicators on front panel for each output channel to display pull-in and fault state
• Built-in channel overcurrent, short-circuit and overload protection to prevent module burnout caused by wiring errors
• PCB with conformal coating treatment, dustproof, moistureproof and anti-electromagnetic interference, adapting to long-term continuous operation in power plant and chemical control rooms
• Standard plug-in card structure, fixed with front panel lock buckle, supports hot swapping under redundant rack power supply without cabinet power cut
• MasterBus 300 dedicated backplane bus communication, stable data interaction with Advant series controllers

• Industrial-grade relay components with long mechanical service life, suitable for frequent on-off control scenarios

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Technical Specifications

• Channel quantity: 16 relay output points
• Load capacity: Max DC load 48W per channel, max AC load 720VA per channel
• Insulation withstand voltage: 500VAC between channel and system bus
• Operating temperature range: -20℃ ~ +60℃
• Storage temperature: -40℃ ~ +85℃
• Protection grade: IP20, only for cabinet internal installation
• Overall dimension: 225×324×18mm
• Net weight: 0.7kg
• HS Code: 85389091
• Certification: CE

• Supply status: Original manufacturer discontinued production; brand new original sealed inventory and fully tested refurbished spare parts are available

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Compatibility

• Applicable control system: ABB Advant OCS, MOD30, MOD300 legacy DCS cabinet
• Matching hardware: System standard rack backplane, main control card, power supply module and bus interface board
• Replacement instruction: 57160001-KX DSDO131 can directly replace same model old version modules for on-site cabinet maintenance

• Incompatible reminder: Cannot be directly matched with 800xA S800 I/O system without bus protocol modification

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Application

• Interlock and on-off control for boiler, turbine and auxiliary equipment DCS cabinets in thermal power units
• Valve switching and equipment logic output control for petrochemical and chemical production line control systems
• Spare part replacement and spare inventory preparation for aging output modules of on-site Advant old-generation automation control cabinets
• Action control of flue gas desulfurization, denitrification and wastewater treatment environmental protection equipment execution components