ABB NU8976A99 HIER466665R0099 NU8976a HIEE220295R1 Processor Module

Product Description

The NU8976A99 is a high-performance processor module designed for ABB Advant OCS-class Distributed Control Systems (DCS). This unit functions as an integrated interface between the system backplane and connected devices, including serial and fieldbus instruments, enabling reliable data exchange and processing within industrial automation networks.

Its robust design and versatile communication options ensure seamless operation in demanding industrial environments, from process control facilities to power generation plants.

Technical Specifications

• Type: Processor Module

• Compatible Systems: ABB Advant OCS-class DCS

• Primary Function: Facilitates communication between backplane and field devices; executes processing tasks

• Inputs/Outputs: 8 digital/analog inputs, 16 outputs (configurable)

• Communication Interfaces: RS-485, CANopen

• Processor Performance: 32-bit embedded CPU with real-time processing capability

• Memory: 512 KB RAM, 2 MB Flash (typical for control and configuration storage)

• Dimensions: 4 × 19.7 × 26.1 cm

• Weight: 1.3 kg

• Operating Temperature: -20°C to +60°C

• Humidity Range: 5–95% RH, non-condensing

• Mounting: Backplane plug-in

Key Features

• Reliable processor module for Advant OCS-class DCS platforms

• Supports RS-485 and CANopen for flexible device connectivity

• Compact, industrial-grade design for harsh environments

• Scalable configuration for system expansion without additional controllers

• Robust data handling with real-time processing capability

Applications

• Industrial process automation

• Power generation systems

• Distributed control in chemical, oil & gas, and manufacturing plants

• Integration with fieldbus and serial devices

FAQ

Q: Can this module work with older Advant OCS systems?
A: Yes, NU8976A99 is backward-compatible with most Advant OCS DCS platforms, though firmware updates may be required.

Q: How many devices can be connected via RS-485 or CANopen?
A: The module supports up to 32 devices on RS-485 and up to 64 nodes on CANopen, depending on bus topology.

Q: Are there similar models for comparison?
A: Comparable modules include NU8975A98 (processor-only) and NU8977A00 (expanded I/O with CANopen), differing mainly in I/O capacity and processing features.