TRICONEX 3401 is a digital output module with triple redundancy architecture, SIL3 safety standard compliance, self-diagnostic function and multiple electrical protection features, which can reliably output the digital signal of the control system to external devices, and is widely used in the field of industrial automation safety instrumentation systems

The TRICONEX 3401 Digital Output module is a key component of the Triconex family of control systems used to output the digital signals of the control system to external devices. The following are its detailed features:

Electrical characteristic

Output channels and voltages: 24 VDC module with 16 discrete output points for common output. Nominal output voltage 24 VDC, operating voltage range 15-30 VDC, absolute maximum output voltage 33 VDC, absolute maximum reverse input voltage -0.6 VDC.

Output current: The output current is self-limited, the maximum current in switching mode is 4.8A, the typical value is 3 A; The maximum current in degrade mode is 1.5 A, typical value is 0.7 A.

Functional characteristics

High security and reliability: In line with SIL3 safety standards, triple redundancy (TMR) architecture, with three independent channels working in parallel, through the patented four-way voting circuit to vote on the output signal, to ensure that in the case of single point failure or even some multi-point failure can still be reliable output signal, suitable for safety instrument system (SIS) and other safety and reliability requirements of the occasion, Can perform safety control tasks such as emergency shutdown (ESD).

Powerful diagnosis function: With perfect self-diagnosis function, it can monitor its own working status in real time, detect the field power loss, short circuit output point, open circuit and other faults, and feedback fault information through the indicator or communication interface. The diagnostic fault coverage is wide, and all kinds of faults can be detected in a short time, such as point faults can be detected within 500 milliseconds, and switch and related driver circuit faults can also be detected in time.

Fast response: The loopback scan time is less than 1.0 ms. The loopback scan time can quickly respond to control system commands, drive external devices timely and accurately, and ensure that the output point is updated quickly and accurately, meeting the application scenarios that require high response time.

Electrical isolation protection: functional grounding to protective grounding isolation voltage of 500 VDC, functional grounding to functional grounding (logic) isolation voltage of 800 VDC, can effectively prevent external electrical interference and potential faults on the system impact, enhance system stability and anti-interference ability.

Application scenario

Industrial automation field: widely used in petroleum, chemical, electric power, metallurgy, paper, pharmaceutical and other industries, used to control valves, relays, motors and other actuators, to achieve accurate control and safety protection of the production process. For example, in petrochemical production, control the valve switch on the material conveying pipeline to ensure that the material is transported according to the process requirements; In power plants in the power industry, the protection system of the turbine is controlled to ensure the safe operation of the power generation equipment.

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Triconex / Tricon 安全系统

-Foxboro IA DCS 系统。

The Triconex system usually consists of the following typical modules:

Main Processor modules (triple).

Communication module(s) .

Input and output modules: can be analog and/or digital and work singular or in hot-spare (standby).

Power supply modules (redundant).

Backplane(s) (chassis) that can hold the previous modules.

System cabinet(s): can compact one or more chassis in one cabinet.

Marshalling cabinets to adapt and standardize interface connections between the field instruments and the Triconex system cabinets.

Human machine interface (HMI) to monitor the events.

Engineering workstation (EWS) for programming. monitoring, troubleshooting and updating.

The Triconex main processors can communicate with the so-called TriStation 1131 application software to download, update and/or monitor programs. These programs are either written in:

Function Block Diagram language,

Ladder diagram language, or

Structured text (Pascal like) Language.

Cause and Effect Matrix Programmable Language (CEMPLE).

Besides, a Sequence of Events (SOE) recorder software and Diagnostic monitor software are implemented.

Industries

Refining and petrochemicals

Upstream and midstream oil and gas

Chemicals and specialty chemical

Power generation

Pharmaceuticals

Safety and critical control applications

TÜV-certified for SIL 3 applications to international standard IEC61508: 2010

– Emergency shutdown systems (ESD control)

– Fire and gas systems (F&G control)

– Burner management systems (BMS controls)

– High-integrity pressure protection systems (HIPPS control)

– Turbomachinery control (TMC) and protection systems

Works in both centralized plus distributed and remote I/O applications

Suitable for use in harsh environments

Here are some relevant models of the TRICONEX 3401 digital output module:

3601E: Digital output module, optically isolated, non-public 115VAC TMR 16 points.

3603E: Digital output module, optically isolated, non-public 120VDC TMR 16 points.

3604E: Digital output module, optical isolation, non-public 24VDC TMR 16 points.

3607E: Digital output module, 48VDC, optically isolated, non-public, TMR.

3608E: Digital output module, optical isolation, non-public 48VAC TMR 16 points.

3611E: Digital output module, optical isolation, utility 115VAC TMR 8-point.

3613E: Digital output module, optically isolated, communal 120VAC TMR 8-point.

3614E: Digital output module, optical isolation, public 24VDC TMR 8 points.

3615E: Digital output module, optical isolation, public low power 24VDC TMR 8 points.

3623: Digital output module, 120VDC, TMR.

3624: Digital output module, 24VDC photoelectric isolation, common, TMR.

3635R: Relay output, normally closed, non-public, simple 32 points.

3636R: Relay output, normally closed, non-public, simple 32 points.

These related models differ in terms of output voltage, isolation mode, points, etc., to meet the diverse needs of different industrial scenarios.