Triconex 3706A Thermocouple Analog Input

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.

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.

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EcoStruxure™ Triconex Safety System – superior protection for people, production and profits

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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.)