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Grid automation system solutions
Distributed I/O
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Distributed I/O

Eaton’s SMP I/O platform is a substation-grade module specially designed to meet the requirement for distributed I/O in modern utility substation automation systems. The SMP I/O platform supports binary input and binary output modules, as well as analog input modules. It operates with AC or DC voltage, and communicates using the DNP3 protocol over serial RS-485 or TCP/IP using fiber or copper Ethernet. It supports IEC 61850 GOOSE messaging and can be integrated with the SMP Gateway or used as a standalone I/O module that connects directly to a DNP3 master station. The SMP I/O platform is one of Eaton's grid automation system solutions.

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Easy integration to automation platform
Improved productivity
Modular I/O cards
Increased flexibility
Substation grade
Rugged reliability

Core features

  • Distributed architecture, substation-grade in rack or wall-mount models
  • Small form factor (1U)
  • Supports binary input/output cards and analog input cards
  • Seamless networking is facilitated through the SMP I/O’s Ethernet and  RS-485 port, and by relying on the industry-standard DNP3 protocol
  • Error-detection features ensure data integrity between the data point and the control center, with supported IRIG-B synchronization for precise timestamping
  • All wiring resides on the rear panel through removable terminal blocks, with a front panel that displays the status of the device and the state of all I/O signals
  • Provides two programmable form-C output relays

Supporting IEDs in distributed systems

The architecture of automation systems has moved from a centralized approach, based on large RTUs, to distributed systems based on Intelligent Electronic Devices (IED) with built-in I/O capability. However, not all I/O can be managed by the IEDs and numerous functions require an I/O processor. Eaton’s SMP I/O is specially designed to fill this gap.

Typical applications

When using a standalone SMP I/O, a master station can monitor and control remote devices using the DNP3 protocol, with accurate IRIG-B time-stamping, effectively replacing a traditional RTU. It is designed to provide seamless integration with the SMP Gateway. It transparently adds support for discrete and analog I/O to the automation platform. Eaton's SMP Gateway extends the SMP I/O through is extensive protocol support, logic processing, built-in HMI and security features
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Eaton is a power management company with 2017 sales of $20.4 billion. We provide energy-efficient solutions that help our customers effectively manage electrical, hydraulic and mechanical power more efficiently, safely and sustainably. Eaton is dedicated to improving the quality of life and the environment through the use of power management technologies and services. Eaton has approximately 96,000 employees and sells products to customers in more than 175 countries.
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