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The Triconex 3504E High-Density Digital Input Module is a triple modular redundant (TMR) unit designed for safety-critical control systems. With 64 DC-coupled input points, it provides reliable signal acquisition and diagnostic capabilities, ensuring accurate monitoring of discrete field signals in demanding industrial environments.
Model / Part Number: 3504E
Manufacturer: Triconex
Product Type: High-Density Digital Input Module
Architecture: TMR (Triple Modular Redundant)
Input Points: 64, commoned, DC coupled
Nominal Voltage Options: 24 VDC or 48 VDC
DC Operating Range: 20–72 VDC
Maximum Voltage: 72 VDC
Typical Hysteresis: 4 VDC / 7 VDC
Stuck Test Capability: ON and OFF states
Shipping Weight: 2 kg
Emergency shutdown (ESD) systems
Fire and gas detection networks
Petrochemical and power generation safety systems
Industrial automation requiring high-density discrete input monitoring
Q: How many signals can the 3504E handle? A: It supports 64 DC-coupled digital input points.
Q: What is the advantage of TMR architecture? A: Triple Modular Redundancy ensures fault tolerance and high system availability, critical for safety applications.
Q: Can the module detect stuck signals? A: Yes, it performs ON and OFF stuck tests to identify faulty input states.
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All parts are sourced from reputable manufacturers and undergo thorough quality checks.
Extensive stock of industrial automation and discontinued parts, ready for immediate shipment.
Every product — including obsolete items — is covered by a 12-month warranty and 30-day return guarantee.
All product names, trademarks, brands, and logos mentioned on this website are the property of their respective owners.These names and trademarks are used for identification and reference purposes only.We are an independent supplier of industrial automation spare parts.We are not an authorized distributor, dealer, or representative of any manufacturer.Products supplied may include surplus inventory or unused items.We do not claim any affiliation with or endorsement by the original manufacturers.