EtherStax I/O blocks provide a ruggedized, high-density solution to interface a very large quantity of discrete I/O signals to your control system. A stackable aluminum housing maintains a small footprint and stands up to harsh, industrial environments.  Web-based configuration simplifies setup with any web browser.

Performance Specifications

Inputs

Configuration (active-low inputs): 96 channels (six 16-ch ports) with a common return (RTN). Each input is connected in tandem with open-drains of output mosfets. Any mix of I/O occurs as all channels are high impedance inputs unless written. Output channels can be read back at any time (loopback monitoring). Input Signal Voltage Range: 0 to 28VDC, 31V maximum. Surge protected. Input Threshold Detection and Sensitivity: 4V DC threshold. Level or latching inputs. Input “Wetting” Current: Built-in current sources switch from 16mA initially (20ms) to 2mA (continuous), default mode. Sources can be changed to 2mA or turned off. Internal Excitation (default): 6V DC, 400mA External Excitation: 6 to 28V DC typical. Separate excitation terminal (logic) for each 16-channel port. Internal and external supplies are diode-blocked from each other. Includes reverse polarity protection. Peer-to-peer (i2o) communication: Change-of-state updates: Less than 5mS events. Timed updates: Configurable for 1-90 seconds.

Outputs

Configuration (low-side switches): 96 channels (six 16-ch ports) of open-drain mosfet switches with common source connection at port RTN terminal. Each output is connected in tandem with buffered inputs. Output “OFF” Voltage Range: 0 to 28V DC, 31V maximum. Surge protected. Output “ON” Current Range: 0 to 300mA DC continuous, each output. Output “ON” Maximum Current: 450mA DC maximum with any 8 channels “on” continuously per 16 channel port Output Port Maximum Current: 4.8A: 16 channels @ 300mA continuous. 3.6A: 8 channels “off” & 8 channels @ 450mA

Local Alarm Output

Configuration: Isolated relay de-energizes (failsafe) or energizes (non-failsafe) as configured when the watchdog timer detects a media or communication failure. Type: SPST-NO, 1 Form A, Class I, Division II approved. Rating: 5A @ 24VDC/250VAC, 6000 cycles resistive. 3A @ 24VDC/250VAC, 100,000 cycles general. 2A @ 24VDC/250V AC, Hazardous locations Maximum Switching Voltage: 250VAC, 125VDC

Enclosure and Physical

Housing Classification and Dimensions: IP20: 8.226” x 2.444” x 7.25”. 4 lbs. (1.8 kg) packed (unit weighs 3.4 lbs). Without enclosure: 7.920” x 1.875” x 7.25”. 1.65 lbs. (0.75 kg) packed (unit weighs 1.05 lbs) Safety Approvals: UL/cUL Listed Hazardous Locations: Class 1; Div. 2; A B C D Open board units: UL Recognized Shock and Vibration Immunity: Rating for single surface-mount unit in enclosure Mechanical Shock: 50g, 3ms, with 3 half-sine shock pulses in each direction along 3 axes (18 shocks), and 30g, 11ms, with 3 half-sine shock pulses in each direction along 3 axes (18 shocks), per IEC60068-2-27 Random Vibration: 5g, 5-500Hz, in 3 axes at 2 hours/axis per IEC60068-2-64

Environmental

Operating Temperature: Open bd, -40 to 75°C(-40 to 167°F) Enclosed bd, -40 to 75°C (all outputs “off”) -40 to 70°C (all outputs “on” at rated Max.) Storage Temperature: -40 to 85°C (-40 to 185°F) Power Requirements: 18-36V DC. Redundant, diode-coupled terminals. Dual copper ports: 2.5W with external excitation, 3.5W with internal excitation. Fiber optic units: Call factory. Isolation: I/O, power, relay and Ethernet port-to-port Peak: 1500V AC, ANSI/ISA-82.01-1988 Continuous: 250V AC, 354V DC

Ethernet Interface

Internal Switch or Hub/Repeater: Dual-port Ethernet switch. Web-configurable as a true switch (default mode) or 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. Protocols and Addressing: Modbus TCP/IP or UDP/IP. i2o peer-to-peer. StaticIP, DHCP, BootP. Configurable IP addresses. Ethernet Modbus TCP/IP Sockets/Sessions: 1-10 socket/sessions programmable via web page. Ethernet Redundancy: Compatible with STP, RSTP, proprietary schemes.

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