Description
Triconex 3564 Digital Input Module
Continuing the safety system hardware sequence, 3564 specifies the 24 VDC Digital Input (DI) Module manufactured by Triconex (Schneider Electric) for the Tricon Safety Instrumented System (SIS).
Key Specifications & Overview
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Manufacturer: Triconex (Schneider Electric)
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Product Type: Single-Channel / High-Density Digital Input Module
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Module Type Designation: Single (designed for cost-sensitive safety applications requiring high-density discrete monitoring while maintaining strict safety standards)
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Number of Input Points: 64 input channels, commoned return
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Nominal Input Voltage: 24 VDC
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Operating Voltage Range: 15 to 30 VDC (Maximum allowable: 36 VDC)
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Nominal Turn-On Current: 2 to 3 mA
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Input Delay: Less than 2 ms (both OFF-to-ON and ON-to-OFF transitions)
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Point Isolation: 1500 VDC
Diagnostics & Safety Features
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Built-In Self-Test Circuitry: Features specialized diagnostic tests capable of detecting stuck-ON and stuck-OFF fault conditions across individual channels within half a second.
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Module Status LEDs: Equipped with front-panel diagnostic indicators including PASS, FAULT, and ACTIVE to simplify troubleshooting and maintenance.
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Hot-Spare Capability: Supports online replacement without needing to shut down the controlled industrial process.
Applications
The 3564 module safely acquires discrete states (such as signals from limit switches, emergency pushbuttons, and safety interlocks) for critical high-integrity safety loops across industries like:
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Emergency Shutdown (ESD) Systems
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Fire and Gas (F&G) Detection Systems
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Burner Management Systems (BMS)
3564
Product Overview
3564 is a 16-Channel Isolated Digital Input Module manufactured by Triconex (Schneider Electric) for the classic Tricon TMR Fault-Tolerant Safety Instrumented System.
It adopts Triple Modular Redundant (2oo3) architecture. The module acquires binary position signals from field switches, circuit breakers and contact devices, performs signal filtering and status conversion, then transmits data to main processors via TriBus backplane bus.
With galvanic isolation between field side and rack backplane, it effectively suppresses ground loop noise in strong electromagnetic environments. Certified to IEC 61508 SIL3, widely used for sequence-of-event signal acquisition in ESD systems, turbine control and burner management.
Important note: 3564 belongs to classic Tricon platform, cannot be used on Tricon CX (8120X) racks.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 3564 |
| Module Type | Isolated Digital Input Module |
| Manufacturer | Triconex / Schneider Electric |
| Applicable Rack | Classic Tricon Rack (8110 / 8120E) |
| Channel Configuration | 16 galvanically isolated digital input channels |
| Rated Input Voltage | 24 VDC (wet contact / dry contact compatible) |
| Dielectric Isolation | 1500 VAC between field circuit and backplane |
| Architecture | Triple Modular Redundancy (2oo3 independent signal paths) |
| Debounce Time | Software configurable |
| Internal Bus | TriBus triple redundant backplane bus |
| Hot Swap | Supported within certified Tricon rack |
| Operating Temperature | -30 ℃ ~ +70 ℃ |
| Ambient Humidity | 5%–95% non-condensing |
| Protection Class | IP20 (cabinet installation) |
| Front Panel LEDs | OK, Fault, individual channel status indicators |
| Safety Certification | IEC 61508 SIL3, FM, CE |
| Engineering Software | TriStation / Triconex Workbench |
| Spare Part Status | OEM production discontinued; surplus new and refurbished modules available |
Key Features
- Independent triple redundant acquisition channels; single path fault will not cause loss of signal collection
- Full galvanic isolation eliminates ground loop interference, ideal for power plant and petrochemical turbine cabinets
- Built-in channel diagnostics to detect field circuit open circuit and abnormal status
- Adjustable signal debounce filter prevents signal jitter caused by contact bounce
- Supports high-resolution time stamping for sequence-of-events (SOE) fault analysis
- Hot-swap design allows module replacement without shutting down the safety rack
- Mechanically keyed housing prevents misinstallation of incompatible I/O modules
- Contrast: 3504E is non-isolated DI module; 3564 is isolated upgraded version with stronger anti-interference performance
