Description
Introduction to ABB DO880 3BSE028602R1 Digital Output Module
ABB DO880 3BSE028602R1 is a 16 channel digital output module in the ABB ADVANT-800XA DCS control system S800 I/O series. It is a high safety and high integrity output module designed specifically for critical industrial processes and safety related applications.
ABB DO880 3BSE028602R1 Module
core parameters
Number of channels: 16 independent digital output channels, concentrated in an isolated group.
Output type: 24V DC current source output (Current Sourcing), with a maximum continuous output current of 0.5A per channel.
Output driver: High side driver, with built-in current limit and over temperature protection for each channel.
Response time: Typical value ≤ 2ms.
Electrical isolation: The isolation voltage between channels is ≥ 2500V, and the isolation voltage between modules and buses is ≥ 1500V.
Communication interface: Supports Profibus DP, communicates with S800 controller through Modulus Bus, and complies with EN 50170 standard.
physical properties
Size: Approximately 46mm x 110mm x 118mm.
Weight: Approximately 0.2kg.
Protection level: IP20, suitable for installation inside control cabinets.
Working temperature: The maximum ambient temperature is 55 ℃. It is recommended to reduce the rating to 40 ℃ to ensure long-term stable operation.
Installation method: Standard DIN rail installation, to be used in conjunction with TU810, TU812, TU814, TU818, TU830, TU833, TU838, TU850 and other terminal units to ensure electrical isolation performance.
Internal structure of each channel
Each output channel consists of the following components: high side driver with current limiting and over temperature protection, EMC protection component, inductive load suppression circuit, output status indicator LED, and isolation barrier facing the Module Bus.
Main functional features
Circuit monitoring: supports monitoring of short-circuit and open circuit loads, with configurable limits, and can complete output switch diagnosis without the need for pulses.
Advanced in car diagnostics: Output status indicator lights distinguish between active and error states, facilitating quick identification of fault channels.
Degraded mode: Supports degraded operation of normally energized channels, which is supported from DO880 PR: G version onwards. For ND (normal power-off) systems, even if the output driver fails, the output can still maintain a safe state through error control.
Short circuit protection and over temperature protection: Automatically limit current in case of short circuit, automatically protect and cut off output in case of over temperature, and report to the bus at the same time.
Fault tolerance level: The output driver has a fault tolerance rate of 1 (as defined by IEC 61508), providing extremely high safety.
Redundant configuration: Supports redundant or single configuration, and the system can continue to operate in the event of a module failure in redundant mode.
Safety certification: Obtained SIL3 certification according to IEC 61508 and Class 4 certification according to EN 954-1, making it one of the highest security level digital output modules in the S800 series.
Main station control: Supports main station control bus data transmission. When the main station has bus access permission, it can directly transmit data without external requests. The main station can fully read and write its own slave stations, and diagnostic information can be displayed on the CPU LCD screen.
Comparison with digital output modules of the same series
DO801 is a 16 channel 24VDC relay output with high channel density but no safety certification. DO802 is an 8-channel 24-230VAC relay output suitable for AC loads. DO810 is a 16 channel 24VDC transistor output suitable for high-frequency switching. The core positioning of DO880 is 16 channel high integrity current source output, with SIL3 safety certification and loop monitoring capabilities, dedicated to safety critical circuits such as emergency shutdown, safety interlocking, valve forced action, etc. This is the essential difference between it and other DO modules.
Typical application scenarios
Power industry: emergency shutdown of generator sets, circuit breaker tripping circuits, safety interlock drives.
Nuclear power and petrochemicals: Executive level outputs in Safety Instrumented Systems (SIS), emergency shut-off valve actuation.
Wind power and ships: safety circuit of variable pitch system, emergency shutdown of engine room.
Steel metallurgy: safety interlock of continuous casting machine, emergency braking of rolling mill.
Rail transit: signal system safety output, switch emergency control.
