Etherstax I/O designed for high reliability
An
Acromag product story
Edited by the Engineeringtalk editorial team
Jul 13, 2009
Acromag has released an analogue input module for its Etherstax series of rugged Ethernet I/O, featuring high I/O density to further reduce cost per channel and save space.
Designed for distributed I/O and Scada applications, the ES2163 and ES2164 models perform 16-bit A/D conversion on up to 64 single-ended DC current or voltage inputs respectively, and interface the signals to Ethernet devices or controllers with Modbus TCP/IP or UDP/IP protocol communication.
Fast scanning updates all 64 channels in less than 10mS.
An embedded web page provides easy setup menus to eliminate programming.
Units are available in a variety of configurations.
Two models support a variety of I/O ranges and offer signal processing functions.
The ES2163 accepts DC current with +/- 20mA, 0-20mA, or 4-20mA input ranges.
ES2164 units accept +/- 5V or +/- 10V ranges.
The 64 channels are organised into eight eight-channel scan groups.
The first eight-channel group can deliver updates in just 1.8mS to achieve maximum scan rates of more than 500Hz.
Each additional eight-channel group adds only 1.2mS to the update time.
A user-configurable sample-averaging capability helps improve accuracy and cancel out noise effects.
The integration/totalisation function, ideal for flow measurement applications, has non-volatile registers to safely store information.
Numerous features help increase reliability, improve performance, and protect from harsh industrial environments.
Dual network ports support 10/100Base-TX copper and 100Base-FX fibre-optic connections with a redundant communication path for critical applications.
Dual DC power terminals enable use of redundant power sources.
A failsafe relay provides alarm output on a power or link-loss failure.
Continuous 250VAC (354VDC) isolation - with a peak 1500VAC rating - safely separates I/O signals from the power, relay, and Ethernet ports.
The compact, stackable aluminium enclosure resists shock and vibration, making it ideal for mounting directly on machinery.
Multiple units are stackable in a space-saving 8 x 7in footprint.
An open-board version is available for custom mounting.
An internal isolated dual-port Ethernet switch provides dual-path communication redundancy with support of STP, RSTP, and any proprietary ring redundancy schemes.
Etherstax units can operate as remote slave devices or communicate independently between units (for example, peer-to-peer).
The units have 10 Modbus TCP/IP sockets, which allow simultaneous communication with multiple masters.
The stackable, high-density packaging enables installation of nearly 400 I/O points across a 19in rack.
A high-strength aluminium enclosure gives IP20 protection with 50g shock and 5g vibration resistance.
This rugged design is ideal for mounting on DIN rails, walls, or directly on machinery.
Plug-in terminal blocks offer easy installation and servicing.
A stackable open-board version (no housing) is lightweight and simplifies mounting in alternative enclosures with lower costs for OEMs and system integrators.
Etherstax I/O are designed for high-reliability operation.
Units feature 1500Vrms isolation with surge protection to increase performance and minimise downtime.
The isolation separates power, relay, I/O, and individual Ethernet ports.
Industrial-grade specs include extended -40C to 70C operating temperatures for low-power, high-efficiency, fanless designs.
Redundant DC power input with internal diode coupling delivers a 'bumpless' transfer to the backup power source.
A hardware watchdog timer can send outputs to a failsafe state or hold the last value if there is a communication failure.
Failsafe SPST 5A fault relays provide local alarming, notification, or shutdown if network communication or power fail.
Etherstax are well-suited to many applications for both end users and OEMs.
The remote monitoring and control capabilities are ideal for Scada, embedded, and test and measurement applications.
Typical uses include power generation, chemical, oil/gas, simulators/trainers, and automation operations.
On the plant floor, the rugged design delivers dependable performance for a variety of distributed I/O functions.
In a control panel, the compact design permits mounting in tight spaces.
CE and UL approvals are pending.
Etherstax are suitable for use in Class I, Division 2, Group A, B, C, and D locations.
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