Invensys Triconex 3721 INVENTORY MODULE

Invensys Triconex TMR Analog Input Module 3721 Differential, DC Coupled

  • Brand:

    Triconex
  • Item NO.:

    Invensys Triconex 37
  • Order(MOQ):

    1
  • Payment:

    T/T
  • Market Price:

    9999
  • Price Range:

    1 - 5
  • Product Origin:

    USA
  • Shipping Port:

    XIAMEN
  • Lead Time:

    IN STOCK
  • Warranty:

    1 Year
Product Detail

Invensys Triconex Analog Input Module 3721
Description:
The Tricon is a state-of-the art controller that provides fault tolerance by means of Triple-Modular Redundant (TMR) architecture. TMR integrates three isolated, parallel control systems and extensive diagnostics in one control system.
3721 is part of Triconex fault-tolerant controller Analog Input Module. Itincludes three independent input channels. Each
input channel receives variable voltage signals from each point, converts them to digital values, and transmits the values to the three main processor modules on demand. In TMR mode, one value is then selected using a midvalue selection algorithm to ensure correct data for every scan.
Sensing of each input point is performed in a manner that prevents a single failure on one channel from affecting another channel. Each analog input module sustains complete, ongoing diagnostics for each channel. Failure of any diagnostic on any channel activates the Fault indicator for the module, which in turn activates the chassis alarm signal. The module’s Fault indicator merely reports a channel fault, not a module failure—the module can operate properly with as many as two faulty channels.
Analog input modules support hotspare capability which allows online replacement of a faulty module.The analog input module requires a separate external termination panel (ETP) with a cable interface to the Tricon backplane. Each module is mechanically keyed for proper installation in a Tricon chassis.

Model Number

3721

Voltage

0 to 5 VDC or -5 to +5 VDC1, + 6%

Type

TMR

No. of Input Points

32 differential, DC-coupled

Isolated Points

Yes

Input Update Rate

10 ms

Resolution

12 bits or 14 bits programmable

Accuracy

< 0.15% of FSR from 0° to 60° C

Input Resistance (load)

10 MΩ (DC), min.

Power-Off Resistance

140 kΩ(DC), typical

Common Mode Rejection

-85 dB (DC - 100 Hz)

Common Mode Range

-12V to +12V peak

Leg-to-Leg Isolation

420 kΩ, typical

Normal Mode Rejection

-3 dB @ 23 Hz

-8 dB @ 60 Hz

-14 dB @ 120 Hz

Input Overrange Protection

150 VDC/115 VAC continuous

Current Range

0-20 mA with 250 Ω shunt resistor

Diagnostic Indicators

Module Status

PASS, FAULT, ACTIVE, FIELD

Color Code

Yellow





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