TRICONEX 0903-164-7921 | Digital Input Module

Product code: N/A

TRICONEX 0903-164-7921 | Digital Input Module

Original price was: ¥99,999.00.Current price is: ¥1,588.00.

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Detailed content

The TRICONEX 0903-164-7921 is a legacy Triconex industrial automation module associated with the Tricon Safety Instrumented System (SIS). Available product records identify this part as a digital input module, while some aftermarket sources describe it more generally as a Tricon safety I/O module.

The module is intended for safety-related signal acquisition within Triconex control systems. It is associated with TMR (Triple Modular Redundant) architecture, allowing safety-system inputs to be processed with fault-tolerant redundancy. The exact input voltage, channel count, terminal arrangement, and supported Tricon chassis should be verified from the module label and system documentation before replacement.

Product Datasheet

Parameter	Specification
Brand	TRICONEX
Model	0903-164-7921
Series	Tricon Safety Instrumented System
Product Name	Digital Input / Safety I/O Module
Product Type	Safety Digital Input Module
Architecture	TMR – Triple Modular Redundant
Application	SIS / ESD / Industrial Safety Control
Installation	Tricon System Chassis
Power	Supplied through compatible Tricon chassis/backplane
Communication	System-dependent
Product Status	Legacy / Obsolete Spare Part
Origin	USA reported in available product records
Dimensions	System-specific; verify from the physical module
Weight	Verify from the installed unit
Discontinued	Reported as obsolete by aftermarket records

Common Questions & Answers

Q: What is TRICONEX 0903-164-7921?
A: It is a Triconex digital input/safety I/O module used in legacy Tricon SIS applications.

Q: What type of system uses this module?
A: It is associated with the Tricon Safety Instrumented System, used for safety-related industrial control and applications such as emergency shutdown systems.

Q: Does it use TMR architecture?
A: Available product information identifies the module as part of the TMR fault-tolerant Tricon architecture.

Q: Is 0903-164-7921 still manufactured?
A: Available current spare-part records describe it as an obsolete/legacy part, with new-surplus and refurbished units appearing in the aftermarket.

Q: What should be checked before replacement?
A: Verify the complete part number 0903-164-7921, module revision, input voltage/type, terminal assembly, chassis compatibility, and the existing Tricon system configuration. Do not substitute another Triconex I/O module solely based on physical similarity.