Description
NBIO-21CU (material number 3BSE017427R1) is a basic I/O unit (Basic I/O Unit 2) of ABB AC500 series, belonging to the analog and digital hybrid I/O expansion module of Advant Master/Controller control platform, used for signal acquisition and output in industrial automation and process control systems.
core positioning
The module itself does not execute control algorithms, but serves as a signal conversion and electrical isolation interface between the controller and field devices. It converts the analog/digital signals of on-site sensors into data that can be processed by the controller, while converting the output instructions of the controller into signals that can be received by on-site actuators. The module adopts a structure design that separates I/O from the motherboard, supports engineering pre wiring, and facilitates system integration and on-site maintenance.
Channel configuration
3-channel digital input (DI): collects discrete signals such as switches, buttons, limit switches, etc
2-channel analog input (AI): receives standard analog signals such as 4-20mA or 0-10V, used to collect process variables such as temperature, pressure, flow rate, etc
2-channel digital output (DO): drives discrete actuators such as relays and indicator lights
2-channel analog output (AO): outputs 4-20mA or 0-10V signals to drive actuators such as regulating valves and frequency converters
The I/O function of the module can be configured by the user, which means that the same channel can be set as both input and output, providing high application flexibility.
Main technical parameters
ABB NBIO-21CU MODULE 3BSE017427R1
Working voltage: 24V DC (input/output)
Input current: maximum 30mA
Working temperature: -20 ° C to+70 ° C (storage temperature can reach -40 ° C to+85 ° C)
Protection level: IP20 (dustproof, preventing solid foreign objects with a diameter greater than 12.5mm from entering)
Installation method: DIN rail installation
Size: 110mm × 45mm × 22mm
Weight: Approximately 0.82kg
Power consumption: maximum 4.6W
Channel update rate: typical value of 1 second
Communication interface: Supports FBP bus technology and can be connected in parallel to various fieldbuses such as Profibus DP, Modbus, CANopen, DeviceNET, etc
Functional Features
Electrical isolation: Electrical isolation is achieved between the input/output channels and the system side to block the impact of on-site grounding circuits and transient interference on the controller
Fault detection and diagnosis: Built in self-test function, automatically detects the electrical ID of the module when powered on, and does not enter the running state when it does not match the system configuration; Real time monitoring of channel status during operation, supporting fault alarms
Hot swappable support: can be replaced when the I/O rack is powered on, without cutting off the system power supply
Programmable: Users can customize and configure modules through ABB programming tools to meet specific control logic requirements
LED status indicator: Each channel is equipped with indicator lights, which intuitively display the working status and fault status
Typical Applications
Industrial process control: Collect analog quantities such as temperature, pressure, flow rate, liquid level, etc., and output control valve settings to form a complete measurement control loop
Manufacturing industry: monitoring production line process parameters, controlling actuators such as motors and valves
Electric Power Industry: Analog Monitoring and Control of Auxiliary Systems in Power Plants
Petrochemical industry: Collection and adjustment of key parameters such as reactor temperature and pipeline flow rate
Building automation: analog signal interface for air conditioning, lighting and other systems
Transportation system: traffic flow detection, signal control, etc
This module is a commonly used I/O expansion unit in AC500 series PLC systems, which can be used in conjunction with the motherboard, CPU unit, and communication module to construct a complete distributed control scheme.
