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  5. LB Remote I/O Systems

LB Remote I/O System

remote_io_LB_assembly_overview

The LB remote I/O system for installation in Zone 2, Class I/Div. 2 is a modular system for signal adaptation between field devices in hazardous areas and control systems in safe areas. With the remote I/O system, the field device signals are transmitted to a process control system via a single fieldbus cable with a standardized bus protocol (PROFINET, PROFIBUS, Modbus and others).

LB remote I/O offers

  • compact design
  • high channel density
  • good diagnostic options
  • worldwide approvals

and much more.

With the PROFINET gateway, the remote I/O system can be connected to IIoT applications via Ethernet networks. Most analogue field devices support HART so that HART can be used for parameterization and diagnostics in the control system. For this purpose, the remote I/O system with HART-IP has a function for forwarding the HART data from the field devices to the control system.

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Portfolio

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Universal Input/Output

The module combines the two functions of analog input and analog output. The four channels can be configured independently of each other and used as AI or AO.

The device function is available in device variants for field signals with Ex ia type of protection or Ex e connection technology and supports HART in order to integrate the connected field devices into IIoT applications via the PROFINET gateway.

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remote I/O analog in

Analog Input

For connecting 2-wire and 3-wire transmitters and active signals from externally supplied field devices (also known as 4-wire transmitters), there are 1- and 4-channel analog modules available. Many of these analog inputs support HART and can therefore integrate the connected field devices into IIoT applications via the PROFINET gateway.

The device function is available in device variants for field signals with Ex ia type of protection or Ex e connection technology.

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remote_io_LB_digital_in

Digital Input

Single or multi-channel binary modules are available for connecting binary sensors or mechanical contacts. Typical applications are NAMUR proximity sensors, optocouplers and potential-free contacts.

The device function is available in device variants for field signals with Ex ia type of protection or Ex e connection technology.

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Frequency Input

Frequency measurements are used in rotating machines, some flow transmitters and in conjunction with other process variables.

The device function is available as a 1-channel device variant for field signals with Ex ia type of protection or Ex e connection technology

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remote_io_LB_temperature_in

Temperature Input

These transmitters for field signals in type of protection Ex ia enable the connection of various RTDs (2-, 3- and 4-wire Pt100 ... -Pt1000) or thermocouples and mV signals. They are available in 1- and 4-channel versions.

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remote I/O analog out

Analog Output

The analog outputs, which are available in 1- and 4-channel versions, can control a wide range of actuators or display elements. Many of these analog outputs support HART and can therefore integrate the connected field devices into IIoT applications via the PROFINET gateway.

The device function is available in device variants for field signals with Ex ia type of protection or Ex e connection technology.

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remote_io_LB_digital_out

Digital Output

Digital ouptu modules can control a variety of sensors and actuators and are available in single or multi-channel versions.

The device function is available in device variants for field signals with Ex ia type of protection or Ex e connection technology.

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Relay Output

The relay offers a practical and efficient solution for the potential-free switching of display elements or actuators.

Relay outputs in Ex e connection technology are available in single or multi-channel versions.

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Power Supply

Remote I/O power supply units are available in 24 V DC, 115 V AC and 230 V AC versions and serve as an electrically isolated power supply for all components of the remote I/O system. Redundancy is achieved by connecting power supply units in parallel.

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Com Units

With the bus couplers, the field device signals are connected to a process control system in a concentrated manner via a single fieldbus cable with a standardized bus protocol (PROFINET, PROFIBUS, Modbus and others).

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Backplanes

To accommodate remote I/O modules, the remote I/O system offers backplanes for use in Zone 1 hazardous areas.

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Field Units

Field units ensure that all electronic components are protected from harsh environmental influences. They are available in enclosure variants made of lightweight glass fiber reinforced polyester or electropolished 316-L stainless steel.

Both enclosure types have IP protection class 66. An integrated drainage channel prevents the one-piece seal from being damaged by standing water.

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Accessories

Pepperl+Fuchs offers a wide range of accessories for the configuration of customized, individual remote I/O installations.

Various bus termination modules are available as well as cables for connecting the base and extension backplanes to which the modules of the remote I/O system are attached.

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