Acromag remote I/O modules feature signal conditioners and network I/O  for a broad range of monitoring and control operations where controllers communicate with instrumentation on the plant floor or in the field. Signal Conditioners include signal transmitters, signal isolators, 4-20mA signal splitters, limit alarms and computation modules. These signal conditioners input voltage, current, thermocouple, RTD, frequency, thermistor, load cell, potentiometer, and discrete sensors. These signal conditioners output DC voltage and current, relay, frequency, pulse width modulation and display/readout. Ethernet remote I/O modules communicate via Ethernet/IP, Modbus TCP/IP, Modbus UDP/IP, and Profinet.

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    TT336: Current/milliVolt Input, DC Power Transmitter

    • Multi-range ±20mA or ±500mV input
    • Universal current/voltage output
    • 12-32V DC power
    DC current and voltage output are both supported on a single model. An optional DIN rail bus can deliver primary or redundant power to multiple units without wiring. Click here to watch a short video highlighting the TT330 Series.  
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    631T, 632T: Single / Dual Channel Isolator

    • 4 to 20mA DC input
    • 4 to 20mA DC output
    • 12-36V DC SELV, 90-250V AC power
    • Single or dual I/O with a dual output model and full isolation
    These units receive 4-20mA process current inputs and provide isolated 4-20mA output signals. Each channel operates independently and is isolated from the others to prevent interaction between channels. Galvanic isolation eliminates ground loops, reduces noise, and blocks transient signals.
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    800C-SIP: IntelliPack Configuration Software

    • Configuration Software
    • USB-to-RS232 Adapter
    • RS232-to-RJ11 Adapter
    • Interface Cable
    Acromag’s configuration software is the key to the IntelliPack’s easy-to-use operation. The software employs the friendly Windows® interface with pull-down selection menus and fill-in-the-blank fields to speed you through a few brief configuration screens. No programming is required.
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    841T: DC Frequency/Pulse Input Intelligent Transmitter

    • 0 to 50KHz, 0 to 65535 pulses input
    • 0 to 20mA DC, 0 to 10V DC output
    • Mechanical alarm relay (25V @ 5A)
    • 10-36V DC power
    • Software configured; pulse counter; signal averaging; optional limit alarm functions
    These transmitters isolate and convert sensor inputs to noise-free, proportional DC current or voltage output signals. An optional relay output adds a local limit alarm function.
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    942MB: Frequency/Pulse Counter Modbus-RTU Input Modules with Periodic or Pulse Waveform Input

    • 2 input channels, 0 to 50KHz in 3 selectable ranges: Amplitudes up to 140V AC peak, Amplitudes up to 200V peak, Pulse counter range of 0 to 65535
    • Solid-state discrete output relays (1A DC loads), 0 to 48V DC
    • 10 to 36V DC, 24V AC power
    • Modbus-RTU high-speed RS-485
    This signal conditioner is a two-channel analog input module with discrete outputs and Modbus communication. It conditions periodic or pulse waveform inputs and provides solid-state relays for limit alarms or ON/OFF control.
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    981PB, 982PB, 983PB: Profibus-DP 12-Channel Digital I/O

    • Active-Low Inputs, Sinking Outputs
    • 12 input channels, 0 to 35V DC range
    • 12 to 36V DC
    • High-speed RS-485
    These modules provide an isolated Profibus-DP network interface for twelve discrete input and/or output channels. The outputs provide direct on/off, high/low, or open/close control of industrial devices.
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    ESW-MBLIB: Ethernet Modbus C Library Software

    • Universal support for five operating systems
    • C source code provided
    • Demo program included
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    SP233: Two-Wire Thermocouple / milliVolt Input Signal Splitter

    • Universal thermocouple or ±100mV input
    • 4-20mA outputs (sink/source)
    • 7-32V DC Loop/local power
    The SP233 model is a high-performance signal splitter that converts one millivolt or thermocouple sensor input into two proportional isolated 4-20mA control signals. Power is received from one or both output loop currents. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP236: Two-Wire Current / milliVolt Input Signal Splitter

    • DC current and low voltage input
    • 4-20mA outputs (sink/source)
    • 7-32V DC loop power
    The SP236 model is a high-performance signal splitter that converts one DC current or millivolt input into two isolated proportional 4-20mA control signals. Power is received from one or both output loop currents. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP237: Two-Wire Process Voltage Input Signal Splitter

    • Multi-range ±1V, ±5V, or ±10V input
    • 4-20mA outputs (sink/source)
    • 7-32V DC loop power
    The SP237 model is a high-performance signal splitter that converts one process-level DC voltage input into two proportional isolated 4-20mA control signals. Power is received from one or both output loop currents. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    SP238: Two-Wire High Voltage Input Signal Splitter

    • Multi-range ±15V, ±75V, or ±150V input
    • 4-20mA outputs (sink/source)
    • 7-32V DC loop/local power
    The SP238 model is a high-performance signal splitter that converts one high-level DC voltage input into two proportional isolated 4-20mA control signals. power is received from one or both output loop currents. Click here to watch a short video highlighting the features of the Acromag SP Series.
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    XT-SIP: Software Interface Package

    • Software Interface Package for BusWorks XT Series Ethernet I/O modules.
    • Easy setup and digital calibration via USB with Windows configuration software
    • Download software only from the Software Tab below
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    653T: Loop-Powered Single Input, Dual Output Signal Splitter

    • One 4 to 20mA DC input
    • Two 4 to 20mA DC outputs
    • 12-50V DC power from output loop
    • Signal splitter provides two identical outputs from one input signal
    These units receive 4-20mA process current inputs and provide isolated 4-20mA output signals. Each channel operates independently and is isolated from the others to prevent interaction between channels.
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    330i: DC-Powered Isolator

    • 4 to 20mA DC input
    • 4 to 20mA DC output
    • 10-36V DC power
    • Three-way isolation
    Series 330i isolators provide 3-way isolation and do not require re-calibration for different loads. They accept a 4 to 20mA process current input and provide a 3-way isolated process current output signal.
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    430i: AC-Powered Isolator

    • 4 to 20mA DC input
    • 4 to 20mA DC output
    • 115V AC or 230V AC power
    • Three-way isolation
    • Zero and span adjustment enable precise calibration
    Series 430i isolators provide 3-way isolation and do not require re-calibration for different loads. The 430i accepts a 4 to 20mA process current input and provide a 3-way isolated process current output signal.
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Signal Conditioning Selection Guide Videos

Welcome to our Signal Conditioning Selection Guide Videos. As a business with many helpful products to offer, we know it can be difficult to find which one you need. This quick selection guide should help point you in the right direction. Choose which video corresponds to your power needs, and the guide will show you which Acromag modules will work with your input.

Learn more in this whitepaper: What is Ethernet/IP?

Output Loop Powered Transmitters Video

DC Powered Transmitters Options Video

AC Powered Transmitters

Alarms