Distributed I/O

Eaton’s substation-grade SMP distributed I/O platforms are specially designed to meet the requirement for distributed I/O in modern utility substation automation systems. Our SMP distributed I/O platforms are the Linux-based SMP IO-2230 and the SMP I/O. These platforms support binary inputs, binary outputs and analog inputs; they operate with AC or DC voltage. Both platforms communicate over serial RS-485 or TCP/IP using fiber or copper Ethernet and can be integrated with the SMP Gateway or used as standalone I/O modules that connect directly to a master station. The SMP distributed I/O platforms are part of Eaton's grid automation system solutions.

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

Core features

  • Seamless networking facilitated through the SMP distributed I/O’s Ethernet and RS-485 ports, and by relying on the industry-standard DNP3 protocol
  • Support of IEC 61850 and IEC 61850 GOOSE messaging 
  • Integrated micro PLC and full integration with the SMP Substation automation platform management application 
  • Comply with industry cybersecurity standards (certified under UL 2900-1 for firmware version 2.0)
  • The SMP IO-2230 platform is Linux-based and designed for growth with up to 64 I/Os
  • The SMP IO-2330 system is Linux-based, compact, rack- and wall-mountable and offers four models with predefined I/O mappings

Leading cybersecurity

Eaton's SMP IO-2230 is the first utility substation automation technology certified under UL 2900-2-2.

Typical applications

When using a standalone distributed I/O unit, 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 automation platform. It transparently adds support for discrete and analog I/O to the automation platform. Eaton's SMP Gateway extends the distributed I/O platforms through its extensive protocol support, advanced logic processing, built-in HMI and security features.

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 distributed I/O platforms are specially designed to fill this gap.
Specifications

Benefits

Substation-grade

The SMP distributed I/O platforms are robust substation-grade hardware devices that meets IEEE 1613 and IEC 61850-3 standards for vibration, electrical surges, fast transients and extreme temperature ranges.

Both platforms are designed for growth and flexibility

  • The SMP IO-2230 can contain up to 64 I/Os arranged in flexible block configurations (not field-upgradable).
  • The SMP I/O input and output cards can be added in minutes, without removing the unit from the rack.

Seamless networking

Both platforms include Ethernet and RS-485 ports. They use the industry-standard DNP3 protocol.

Reduced engineering effort

The SMP distributed I/O platforms save on cabling, commissioning and configuration time, especially when it is used with the SMP Gateway automation platform. Their removable connectors speed up hardware changes.

Scalability

The SMP IO-2230 has an universal power supply with a wide input AC and DC voltage range as well as software configurable voltage ranges on binary inputs.

Cybersecurity

The SMP IO-2230 provides secure remote management capabilities; it has an integrated firewall and can be securely accessed for maintenance from Enterprise Management Software (IMS).  Both SMP distributed IO platforms are accessible for secure remote maintenance via the SMP Gateway automation platform. 

Accurate data

The SMP distributed I/O platform’s error-detection features ensure data integrity between the data point and the control center. They also support IRIG-B synchronization for precise timestamping.

The SMP IO-2230

General specifications

The SMP IO-2230 is the latest I/O platform from Eaton and is fully integrated with the SMP Manager’s software and tools and includes many new features that will greatly enhance user experience. It can contain up to 64 I/O and has advanced security features and programmable logic capabilities.

10-year warranty

All Eaton’s distributed I/O platforms are designed to operate without any maintenance for their entire lifetime, when used under normal conditions. The SMP IO-2230, our latest automation I/O platform, now comes with a 10-year limited warranty, the terms of which are described in the 10-year warranty on SMP Products document which is available in the Resources section under Selling policy and T&Cs.

Dimensions

  • Rack-mount, 2U
  • 3.47 in. H x 19 in. W x 7.1 in. L
  • 84.1 mm H 482.6 mm W x 183.3 mm L
  • 10 lbs (4.52 kg) max

Power supply

  • Universal power supply
  • Rated supply voltage: 100 – 240 VAC/ 24 – 250 VDC
  • Input voltage range: 88 – 264 VAC /19.2 – 287.5 VDC
  • Frequency range: 50/60 Hz

Comunications

Ethernet (metallic or optional optical with LC connectors):

  • 2 x 10/100 Mb/s Ethernet ports (used as switches for daisy chain connections)

RS-485

  • Multi-drop 2 wires, up to 1200 m (4000 ft.) and 32 devices
  • Terminal blocks

IRIG-B time synchronization

  • Demodulated 2V high level detection
  • Vin max up to 12 VDC
  • Opto-isolated, Terminal blocks

I/O configuration

Up to 64 I/Os with flexible I/O configuration base on four I/O rows, each with the possible following I/O configuration: 16 BI or 16 BO (relays) or 16 HBO or 8 BI and 8HAI.  Where HAI corresponds to high isolation analog input and HBO corresponds to fast speed and high-current interrupting binary output.

Binary inputs

  • AC and DC inputs
  • Tolerance/ Intolerance filtering
  • Chatter protection
  • Fail-safe circuit
  • Software polarity reversal
  • Time tag at the beginning or end of filtering
  • Persisted counters

Control outputs (binary outputs)

  • Output protection against single component failure
  • Trip/close pair, latch, pulse, pulse pair support
  • Persisted operation counter/operation time
  • Software polarity reversal
  • Control queuing for up to 10 parallel requests

Analog inputs

  • High/Low warning support
  • Deadband, scaling and units
  • User calibration at fixed ambient temperature

The SMP I/O

General specifications

The SMP I/O is composed of a base unit that can accept up to four field-installable I/O cards. The base unit provides two programmable form-C output relays, RS-485 and Ethernet communications interfaces, and an IRIG-B interface.

All wiring is on the rear panel through removable terminal blocks. The front panel displays the status of the device and the state of all I/O signals. A Local/Remote control disables all control commands from the master station for operator safety during system maintenance.

Dimensions

Rack-mount, 1U

  • 1.72 in. H x 19 in. W x 8 in. L
  • 43.6 mm H 482.6 mm W x 203.2 mm L

Wall-mount

  • 4” H x 11.9” W x 6.85” L
  • 101 mm H 302 mm W x 174 mm L

Power supply

Low-voltage model

  • Rated supply voltage: 24-48 VDC
  • Input voltage range: 18-75 VDC

High-voltage model

  • Rated supply voltage: 110-250 VDC / 110-240 VAC
  • Input voltage range: 100-300 VDC / 85-264 VAC
  • Frequency range: 50/60 Hz

Communications

Ethernet

  • 10/100BASE-TX, RJ-45 connector
  • 100BASE-FX, up to 2 km, LC connector, multimode 1300 nm

RS-485

  • Multi-drop 2 wires, up to 1200 m (4000 ft.) and 32 devices
  • Terminal blocks

IRIG-B time sychronization 

  • Demodulated 2V high level detection
  • Vin max up to 12 VDC
  • Opto-isolated, Terminal blocks

Ports

8 Independent opto-isolated ports per module with optional Error Detection Circuit (EDC)

Input range:

  • 24 VDC
  • 48 VDC
  • 110 VDC
  • 125 VDC
  • 220 VDC
  • 250 VDC

Current sink:

  • EDC input option* 4 mA maximum
  • Non-EDC input option* 2 mA maximum

I/O configuration

The SMP I/O base unit can accept up to four field-installable I/O cards. The base unit provides two (2) programmable form-C output relays.

Binary input card

The binary input card provides 8 electrically independent opto-isolated connections. Various binary input card models are available for all commonly used voltage ranges.

Control output card (binary output)

The SMP I/O supports up to 18 control relays with the  2 form-C included in the base unit and the two binary output cards that can be installed in the bottom row.  The high load carrying capability reduces the need for interposing relays.

  • Trip/close pair, latch, pulse, pulse pair support

Analog input card

The analog input card has 8 isolated inputs that can be used to measure either voltage or current values. It is designed for DC value measurement only. The analog card is equipped with a Delta-Sigma 16 bits ADC for each channel and is factory calibrated to ensure high accuracy reading over all the operation temperature range. There are two models of analog input card, the standard model and the high isolation model.

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