Invensys TRICONEX 3805E Analog Output Module

Description

The Invensys TRICONEX 3805E Analog Output Module is a component of the Tricon Triple-Modular Redundant (TMR) fault-tolerant system, designed for critical safety applications. It serves to convert digital signals processed by the Tricon system into analog signals to control field devices such as valves and regulators, and is widely used in safety instrumented systems (SIS) across oil and gas, chemical, power, pharmaceutical, and water treatment industries.

Key technical specifications include 8 independent analog output channels, each delivering a 4-20 mA current output (with +6% overrange capability). It features 12-bit resolution and high accuracy of less than 0.25% of full-scale range (0-21.2 mA) within the 4-20 mA operating range, ensuring precise signal output. The module operates on 24V DC input voltage, with a maximum power consumption of less than 25W, and has a wide operating temperature range of -40 degrees Celsius to 70 degrees Celsius.

Additional critical features include support for multiple communication protocols such as Modbus TCP/IP, Ethernet/IP, PROFIBUS, and PROFINET, DC coupling with a common return, overrange protection of +42.5 VDC, and a typical leg fault switchover time of less than 10 ms. Its TMR design provides high reliability, availability, and fault tolerance, making it suitable for demanding safety-critical control environments.