Acromag releases 993EN and 994EN I/O modules
An
Acromag product story
Edited by the Engineeringtalk editorial team
Jun 2, 2009
Acromag's new 993EN and 994EN Busworks Ethernet I/O modules for distributed I/O and Scada provide 16-channel 16-bit A/D interfaces for single-ended analogue voltage or current input signals.
These inch-wide units make it easy to retrofit older control systems for Ethernet Modbus TCP/IP networking and reduce the cost per channel in new installations.
Users can select industrial-grade or commercial versions for significant savings in applications that do not need the extra performance or safety approvals.
Industrial-grade units add superior accuracy, a signal integrator/totaliser function, -40 to +70C capability and meet UL/cUL Class 1 Division 2 ABCD (Zone 2) requirements.
Two models, each with 16 single-ended analogue inputs, support a variety of I/O ranges.
The 993EN accepts DC current with +/-20mA, 0-20mA or 4-20mA input ranges.
994EN models accept +/-5V or +/-10V DC.
Fast scanning updates all 16 channels in just 8mS.
Dual-format data-registers support 16-bit integer and 32-bit floating-point formats.
Users can read raw-channel data based on 16-bit signed integer or 32-bit scaling registers, configurable on a per-channel basis, to minimise CPU or HMI software processing time.
Surge protection and three-way 1500V isolation between I/O, power and network circuits increase reliability.
A sample averaging function is also configurable.
Averaging improves performance in noisy or fluctuating environments and increases the performance of single-ended inputs.
On industrial-grade units, an integration function can totalise inputs with non-volatile counter registers on all channels.
Totalising is ideal for flow applications, providing the ability to accurately measure actual volumetric usage on liquid, gas, electricity and fuel flows.
Users can read instantaneous flow signals and volume data on each channel.
Information is stored to non-volatile memory, which is safe in the event of a power loss.
Common applications involve monitoring temperature, pressure, flow and level instruments in process control, automation, remote data acquisition, online monitoring and supervisory management systems.
These input modules are easy to use and require no software as the units are configured using any web browser to set operating parameters on embedded configuration menus.
An auto-copy function lets users rapidly apply a saved configuration to multiple units.
The automatic calibration function uses built-in precision sources; on-demand self-test capability verifies the calibration.
Front-panel LEDs provide a visible confirmation of proper operation.
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