Triconex 3901X 24Vdc Supervised Universal I/O

Overview

Indicators are lights on the front panel of each module that identify the state of each module. 

Each module includes indicators that identify the general state of the module and other indicators related to the function of the module.

The types of indicators include:

• Status indicators which identify the processing state of the module.

Each module includes a Pass, Fault, and Active indicator.

• A lock indicator which identifies whether the module is unlocked.

• Mode indicators which identify the current operating state of the controller.

(Only on MP Modules.)

• Field power and power load indicators which identify whether a power

problem has occurred. (Only on some I⁄O modules.)

• Communication indicators which identify the type of communication occurring. 

(Only on MP and CM Modules.)

• Points indicators which identify whether the point is energized.

• Alarm indicators which identify alarm conditions for the controller. 

(Only on MP Modules.)

Identifying Fault and Alarm Conditions

You can identify alarm and fault conditions in the following ways:

• By examining the indicators on the front panel of each module and consulting this chapter.

• By using the Diagnostic Panel in the TriStation application. 

For more information, see the TriStation 1131 Developer’s Guide.

Tricon Key capabilities

• TÜV-certified for SIL3 applications to international standard IEC61508

• High-availability architecture for continuous operation

• Fault-tolerant architecture for continuous operation even under fault conditions

• Choice of form factors

• Online module replacement ensures continuous operation and plant availability

• Online upgrade without process interruption

• Direct Integration with Foxboro®Evo process automation system

• Easily integrated with all major distributed control systems

• ISA Secure EDSA Level 1 right out of the box

• Works in both centralized and distributed applications

• HART protocol pass through to Asset Management Systems

• Fast program cycle time from 10 mS

• 1 mS SOE Digital Input

• Choice of termination options — Direct and ETP

• Expertise available from our TÜV-certified Functional Safety Experts and Engineers

• Continually current technology

• Comprehensive family of I/O modules

A powerful, scalable design with assurance

of continuous operation, the Tricon system complies with international safety

standards such as IEC61508 and fulfils the requirements for applications such as

Emergency Shutdown (ESD), Fire and Gas Protection (F&G), Burner Management

(BMS), High Integrity Pressure Protection (HIPPS) and Turbomachinery Control

(TMC). The redundant high availability architecture provides a flexible, robust,

reliable and powerful solution that is ideal for clients looking to achieve

environmental and safety excellence.

Fault and Alarm Indicators

Fault indicators identify potentially serious problems with a module. Alarm

conditions identify abnormal field conditions such as loss of power and loss of communication.

If a fault or alarm indicator is on, you should consult the appropriate section of this

chapter and take appropriate action. This action may include replacing a faulty

module or repairing a faulty circuit or device.

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