Introduction

The 900EN series is a rugged, high-performance line of networked I/O modules. Modules feature universal input/output ranges and an intelligent microcontroller to provide extreme flexibility and powerful monitoring and control capabilities. Select from a variety of analog and discrete I/O models to meet your application requirements.

Compact Size

Each inch-wide module has a direct network interface and processes I/O signals on up to twelve channels. This space-saving approach is very cost-effective for systems that need to add I/O channels at an existing control site or network to new remote sites.

Web Configuration

The I/O modules are easily configured using your standard web browser. Each I/O module has embedded web pages to help you set up and control the unit. These web pages guide you through the steps to configure network settings, calibrate the module, and test operation.

System Reliability

Sophisticated watchdog timers increase system reliability. All I/O modules have a watchdog that monitors the microcontroller for failed operations or a “lock-up” condition and automatically resets the unit. If host communication is lost and a configurable watchdog timer expires, all analog and discrete outputs go to a “fail-safe” condition.

900EN Series with i2o® Peer-to-Peer Communication

i2o® Peer-to-Peer Communication

Acromag’s i2o technology provides the easiest way to link your inputs to your outputs without a PLC, PC or master CPU. Using this technology, many BusWorks 900EN I/O modules have the ability to operate like a long-distance transmitter. You can convert your sensor inputs at Point A to process control signals at Point B. Or, monitor a discrete device at one site by reproducing the discrete level with a relay output at another location.

Learn more about i2o Peer-to-Peer communication here.

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Key Features & Benefits

  • Web Browser Configuration: Built-in web page enables configuration with a web browser over an Ethernet connection
  • EtherNet/IP™ or Modbus TCP/IP Protocol: Supports 10Base-T and 100Base-TX interface
  • Peer-to-peer Ethernet communication: i2o technology enables module-to-module communication without a controller
  • Direct Network Interface on Each Unit: Each I/O module has a built-in microcontroller for communication. No bus coupler required.
  • Up to 10 Sockets per Module: Multiple masters can talk to one module
  • Automatic Data Flow Control: 10/100Mbps and half/full duplex negotiation
  • Fully Isolated: I/O, network, and power circuits isolated from each other for safety and noise immunity
  • Wide Ambient Temperature Range: Provides reliable operation from -40 to 70°C
900EN Key Features & Benefits

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Discrete I/O Modules

These modules monitor discrete levels of various devices and/or provide on/off control capabilities depending on the model selected. Each module has up to twelve channels to save space and minimize costs. Models are available with input- or output-only, or bidirectional I/O configurations.

Inputs

  • Active-low inputs, 0 to 35V DC

Outputs

  • Sinking outputs, 0 to 35V DC, up to 500mA

Functions

  • Sinking
  • Monitor discrete state or level
  • Control on/off, high/low, open/close switching
  • Activate audible or visual alarms
  • Count / totalize

Analog Input Modules

These units monitor a wide variety of industrial machinery and equipment. They accept direct sensor inputs or DC process control signals from transducers, transmitters, and other instruments.

Inputs

  • DC current
  • DC voltage
  • DC millivolts
  • Thermocouple
  • RTD/resistance
  • AC current
  • microBlox® uB module inputs
  • (more than 100 signal types)

Functions

  • Measure process variables
  • Monitor machinery and industrial devices
  • Acquire data from non-networked instruments
  • Integrate / totalize

Analog Output Modules

Analog output modules are ideal for controlling a wide variety of devices. The host defines the output of voltage or current signals to control speed, flow, temperature, frequency, level, force, torque, intensity, and many other physical properties.

Outputs

  • DC voltage
  • DC current

Functions

  • Write data to local displays or recorders
  • Control drives, valves, and positioners

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A Simple Alternative to “Block I/O”

A Simple Alternative to "Block I/O"

Acromag 900EN Series I/O

Stand-alone I/O modules are very easy to use.

  • Configures with standard web browser
  • Direct connection to network
  • Up to 16 channels on one module
  • 1-inch wide for 16 channels
  • Flexible 15-36V DC power requirement
  • Pluggable terminal blocks on top and bottom

Block or Modular I/O Systems

Installation of configuration software required

  • Expensive bus coupler required
  • Plug-in I/O modules or terminal blocks required
  • Five inches wide or more for twelve channels
  • Special 5V power supply may be required
  • Fixed wiring terminals on front of unit

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Easy Configuration

Industrial Ethernet networks offer several advantages. They are proven, fast (up to 100Mbps without fiber optic cable) and ideal for transmitting analog or discrete data. I/O devices are also easy to install and maintain. And with Ethernet networks already in place at many facilities, it is a simple task to bring your process data to any networked computer.

Acromag’s 900EN I/O modules are easily installed and configured using any standard web browser. No special software is required because each module has a built-in web page for configuration purposes.

Host PC Connected Directly to a 900EN Module

Plug the Ethernet cable from your computer into the I/O module’s RJ-45 port to start configuration.

A web page is embedded into each module for easy configuration using a standard web browser.

A web page is embedded into each module for easy configuration using a standard web browser.

A test page is also accessible with your web browser to confirm proper operation of the I/O module.

A test page is also accessible with your web browser to confirm proper operation of the I/O module.

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General Operation and Performance Specifications

The following specifications are common to all 900EN Series I/O modules.

Communication

Connector: Shielded RJ-45 sockets, 8-pin, 10BaseT/100BaseTX.

Wiring: Wired MDI. 9xxEN I/O modules do NOT support auto-crossover. 900EN switch supports auto-crossover.

Protocol: EtherNet/IP or Modbus TCP/IP with web browser
configuration. EtherNet/IP supports PCCC object for communication with legacy PLCs (e.g. SLC505).

IP Address: Default static IP address is 128.1.1.100

Port: Ethernet Modbus TCP/IP models (9xxEN-4xxx): Up to 10 Modbus TCP/IP sockets supported. EtherNet/IP models (9xxEN-6xxx): Up to 10 EtherNet/IP sockets and 1 Modbus TCP/IP socket.

Data Rate: Auto-sensed, 10Mbps or 100Mbps.

Duplex: Auto-negotiated, full or half-duplex.

Compliance: IEEE 802.3, 802.3u, 802.3x, Ethernet II.

Configuration: Web page for configuration and control is built-in with Ethernet access via a standard web browser.

Communication Distance: Distance between network devices is generally limited to 100 meters using recommended cable. Distances may be extended using hubs and switches.

Address: IP address is automatically acquired at startup. Unit may be configured to retrieve this address from the network server using BOOTP (Bootstrap Protocol), or via DHCP (Dynamic Configuration Protocol). A static IP address is also user-programmable. A default toggle switch sets the static IP address to the default factory address of 128.1.1.100 for initial configuration.

Environmental

Isolation: I/O channel, power, and network circuits are isolated from each other for common-mode voltages up to 250VAC, or 354V DC off DC power ground, on a continuous basis (will withstand 1500VAC dielectric strength test for one minute without breakdown). Complies with test requirements of ANSI/ISA-82.01-1988 for voltage rating specified.

Electromagnetic Compatibility (EMC)

Immunity per European Norm EN50082-1.
Emissions per European Norm EN50081-1.

Electrostatic Discharge (ESD) Immunity: Per EN61000-4-2.

Radiated Field Immunity (RFI): Per EN61000-4-3 and ENV50204.

Electrical Fast Transient Immunity (EFT): Per EN61000-4-4

Conducted RF Immunity (CRFI): Per EN61000-4-6.

Surge Immunity: Per EN61000-4-5.

Radiated Frequency Emissions: Per EN55022 Class B.

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900EN Series Models

Analog Input Modules

958EN
• 16-channel voltage input
• integrator on select models
• microBlox interface
• industrial or commercial grade

961EN / 962EN
• 6-channel current or voltage input
• EtherNet/IP or Modbus TCP/IP
• i2o communication on select models

963EN / 964EN
• 12-channel current or voltage input
• EtherNet/IP or Modbus TCP/IP

965EN / 966EN
• 4 or 6-channel TC/mV or RTD input
• EtherNet/IP or Modbus TCP/IP
• i2o communication on select models

967EN / 968EN
• 8-channel current or voltage input
• integrator on select models
• industrial or commercial grade

Analog Output Modules

972EN
• 4 or 6-channel current output
• EtherNet/IP or Modbus TCP/IP
• i2o on select models

973EN
• 4 or 6-channel voltage output
• EtherNet/IP or Modbus TCP/IP
• i2o communication on select models

Discrete I/O Modules

981EN
• 12-channel discrete input
• EtherNet/IP or Modbus TCP/IP
• i2o communication on select models

982EN
• 12-channel discrete output
• EtherNet/IP or Modbus TCP/IP
• i2o communication on select models

983EN
• 12-channel discrete input/output
• EtherNet/IP or Modbus TCP/IP
• i2o communication on select models

989EN:
• 16 I/O channels
• pulse counter/timers on select models

Combination I/O Modules

951EN
• 4 analog current inputs
• 2 analog current outputs,
• 6 discrete I/O,
• Modbus TCP/IP or EtherNet/IP
• i2o communication on select models

952EN
• 4 analog voltage inputs
• 2 analog current outputs
• 6 discrete I/O
• Modbus TCP/IP or EtherNet/IP
• i2o communication on select models

Click here to download your brochure today – BusWorks Ethernet I/O Series Brochure
White Paper Introduction Modbus TCP
White Paper What is Ethernet/IP?
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Because We Know I/O

Because We Know I/O

Doing business with Acromag means you can count on receiving dependable value when using our products. We guarantee to meet or exceed published product performance specifications and offer you exceptional personal service with a real person within one business day.

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