Key Features:

These EtherStax I/O modules provide a rugged, high-density, and high-speed solution to interface a large quantity of analog input signals to SCADA and distributed I/O systems. Each unit converts up to 64 single-ended analog voltage signals from various sensors and instruments for transmission to an Ethernet-based control network. Typical applications include process control, automated manufacturing, remote data acquisition, test and measurement, embedded computing, and supervisory monitoring systems.

• 64 single-ended analog voltage inputs
• 4-way isolation and surge suppression
• High-resolution 16-bit A/D
• High-speed scanning with 10 millisecond update of all 64 channels
• Automatic zero/span calibration
• On-demand self-test verifies calibration
• Configurable from any web browser
• User-configurable sample averaging and integration/totalization function with non-volatile registers
• Dual-format data registers support 16-bit integers or 32-bit floating point
• Scaling registers on all channels
• Operating temperature: -40 to 70°C (-40 to 158°F)

Product Details

Analog Field Inputs

Input Channel Configuration
– 16 single-ended analog voltage inputs and 16 single-ended analog current inputs.
Input Ranges (select on per-channel basis)
– ±5V, ±10V, ±20mA, 0-20mA, or 4-20mA DC.
Input Scaling (per-channel basis)
– Floating Point Format: IEEE-754.
Input Resolution
– 16-bit maximum, 0.00166% (1 part in 60,000).
Input Accuracy
– Current Input: Better than 0.1% of range.
– Voltage Input: Better than 0.05% of range.
– Input Impedance
– Voltage: 4M ohms minimum.
– Current: 100 ohms.
Input Scan Groups and Scan Times
– Eight user-enabled 4-channel scan groups. 770µS update/group (5mS for all 32 channels) with averaging, loopback, and totalization functions disabled.
Input Overvoltage Protection
– Bipolar Transient Voltage Suppressers (TVS), 18V clamp level typical.
Noise Rejection
– CMR (50-60Hz): Better than -72dB.
Sample Averaging (user-configurable)
– 0-500 samples. One register for all channels.

Analog Field Outputs

Output Channel Configuration
– 16 DC voltage outputs.
Output Ranges (per-channel basis)
– ±5V, ±10V DC (at ±1mA). User-configured on a per-channel basis.
Output Impedance
– 1 ohm maximum.
Output Resolution and Accuracy
– Resolution (±10V): 16-bit maximum, 0.00166%.
– Resolution (±5V): 15-bit maximum, 0.00305%.
– Accuracy: Better than 0.05% of range.

Local Alarm Output

– Failsafe or non-failsafe (user-configurable) relay trips on power or link-loss failure.
– SPST-NO, 1 Form A, Class I, Division II approved.
– 3A @ 24V DC/250V AC, 100,000 cycles general.
– 2A @ 24V DC/250V AC, Hazardous locations.
Maximum Switching Voltage and Power
– 250V AC / 750VA, 125V DC / 90W.

Ethernet Interface

Internal Switch or Hub/Repeater
– Dual-port Ethernet switch.
– User-configurable as a true switch (default mode) or low-latency hub.
Network Connector [10/100 Base-T(X)Copper]
– One or two 8-pin RJ-45 connectors.
– Automatic MDI/ MDI-X. 100m communication distance.
Network Connector (100 Base-FX Fiber-optic)
– One multi-mode with SC connector. 2km communication distance. Full/half-duplex, selectable.
– Modbus TCP/IP, UDP/IP, i2o peer-to-peer.
– StaticIP, DHCP, BootP.
Ethernet Modbus TCP/IP Sockets/Sessions
– 1-10 socket/sessions user-configurable.
Ethernet Redundancy
– Compatible with STP, RSTP, or any ring scheme.


Operating and Storage Temperature
– Operating: -40 to 70°C (-40 to 158°F).
– Storage: -40 to 85°C (-40 to 185°F).
Power Requirements
– 18-36V DC. Redundant, diode-coupled terminals.
– 4.8W (copper ports), 5.8W (fiber-optic ports).
– I/O, power, relay and Ethernet port-to-port.
– Peak: 1500V AC, ANSI/ISA-82.01-1988.
– Continuous: 250V AC, 354V DC (150V AC ch-ch).

Safety Approvals

- CE marked and UL/cUL Listed.
– Hazardous Locations: Class I; Div 2; A, B, C, D.
– Open board units: UL Recognized.
– Shock and Vibration Immunity (in enclosure)
– Mechanical Shock: 50g (3ms), 30g (11ms).
– Random Vibration: 5g, (5-500Hz).