Product Name:Digital Input Specifications
Brand Name: TRICONEX
Model Number:3504E
Country of Origin:USA
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
TRICONEX |
Model Number: |
3504E |
Country of Origin: |
USA |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
Delivery time in stock |
Payment Terms: |
T/T |
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Sales Manager: |
Stella |
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Send an email: |
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Contact in Whatsapp: |
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Parameter |
Specification |
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Model |
3504E |
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Manufacturer |
Triconex (Emerson / ABB) |
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Product Type |
High-Density TMR Digital Input Module |
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Architecture |
Triple Modular Redundant (TMR), 2oo3 voting |
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Number of Input Points |
64, commoned in groups of 8 |
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Input Voltage (24 VDC mode) |
20–36 VDC |
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Input Voltage (48 VDC mode) |
40–72 VDC |
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Input Over-Range Protection |
115 VAC continuous, 150 VDC continuous |
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Switching Level (24V: Off→On) |
15 VDC typical, 18 VDC worst-case |
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Switching Level (24V: On→Off) |
8 VDC typical, 6 VDC worst-case |
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Switching Level (48V: Off→On) |
27 VDC typical, 32 VDC worst-case |
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Switching Level (48V: On→Off) |
14 VDC typical, 11 VDC worst-case |
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Input Delay (Off→On / On→Off) |
<10 ms each |
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Input Impedance |
>30 kΩ nominal |
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Logic Power Consumption |
<10 W |
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Diagnostic Glitch Duration |
1 ms every 2–3 seconds |
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Maximum Input Toggle Rate |
Once every 100 ms |
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Operating Temperature |
–40°C to +70°C |
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Status Indicators |
1 per point (On/Off state); Module status (Pass, Fault, Active) |
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Color Code |
Dark red |
The 3504E is a high-density TMR (Triple Modular Redundant) digital input module from Triconex, engineered for safety-critical applications within the Tricon Safety Instrumented System (SIS). The 3504E provides 64 digital input points configurable for 24 VDC or 48 VDC operation. With a 2-out-of-3 (2oo3) voting architecture, the 3504E ensures fault-tolerant operation. The 3504E features three isolated processing channels per module, continuous diagnostics, and is ideal for emergency shutdown (ESD), fire & gas (F&G), burner management (BMS), and turbomachinery control applications.
Chassis Mounting – Install the 3504E module into a designated slot of the Tricon backplane. A foolproof mechanical lock prevents incorrect insertion.
External Termination Panel (ETP) – The module requires a dedicated external termination panel (ETP) with cable connections to the Tricon backplane. Field wiring connects on-site switch contacts to the ETP.
Mounting Environment – Install in certified control cabinets following ABB Triconex installation standards. Ensure secure mounting and proper grounding.
Field Wiring – Use shielded field wiring to minimize electrical noise and ensure signal integrity.
Grouped Inputs – 64 inputs are organized in groups of 8 for efficient wiring and diagnostic segregation.
Voltage Selection – Input voltage (24 VDC or 48 VDC) is selected via TriStation 1131 configuration software.
Hot Standby Support – All TMR digital input modules support hot standby functionality.
Triple Modular Redundancy (TMR) – Three isolated processing channels per module with 2-out-of-3 (2oo3) voting architecture ensure fault-tolerant operation
64 High-Density Inputs – Provides 64 digital input points in a compact module, organized in groups of 8 for efficient wiring
Dual Voltage Flexibility – Supports both 24 VDC and 48 VDC field signals, selectable via software
Wide Operating Temperature – Operates reliably from –40°C to +70°C
Comprehensive Diagnostics – Continuous verification of Tricon‘s ability to detect state transitions; diagnostic glitch every 2–3 seconds
Fast Response – <10 ms input delay for both Off-to-On and On-to-Off transitions
Robust Over-Range Protection – Withstands 115 VAC continuous and 150 VDC continuous input over-voltage
Visual Status Indication – Per-point On/Off status LEDs plus module-level Pass, Fault, and Active indicators
Hot Standby Support – Enables online module replacement without system shutdown
The 3504E operates as a high-density digital input interface within the Tricon TMR safety architecture. Each of the 64 input points is processed by three independent isolation channels. A dedicated microprocessor on each channel scans every input point, compiles the data, and transmits it to the main processor as required.
The module employs a 2-out-of-3 (2oo3) voting mechanism: the three channels independently evaluate each input state; the final output is determined only when at least two channels agree. This architecture eliminates single points of failure—a fault in any one channel cannot corrupt the final data, ensuring high-integrity operation for safety instrumented functions.
The module supports two voltage ranges (24 VDC: 20–36 V; 48 VDC: 40–72 V) selectable via TriStation 1131 configuration software. Each input has hysteresis to prevent chatter near switching thresholds. A diagnostic glitch (1 ms every 2–3 seconds) is injected to verify the module‘s ability to detect state transitions. The maximum input toggle rate is once every 100 ms to ensure proper diagnostic coverage.
Q1: What voltage ranges does the 3504E support?
A1: The 3504E supports two voltage ranges: 20–36 VDC for 24 VDC nominal operation, and 40–72 VDC for 48 VDC nominal operation. The voltage mode is selected via TriStation 1131 configuration software.
Q2: How many input points does the 3504E provide?
A2: The 3504E provides 64 digital input points, organized in groups of 8 for efficient wiring and diagnostic isolation.
Q3: What is the TMR architecture of the 3504E?
A3: The 3504E uses Triple Modular Redundancy (TMR) with three independent isolation channels per module. A 2-out-of-3 (2oo3) voting mechanism ensures fault-tolerant operation—if one channel fails, the other two continue to provide correct data.
Q4: What is the response time of the 3504E?
A4: The 3504E delivers an input delay of less than 10 ms for both Off-to-On and On-to-Off transitions, enabling fast response for safety-critical applications.
Q5: What applications is the 3504E suitable for?
A5: The 3504E is designed for safety-critical applications including Emergency Shutdown Systems (ESD), Fire & Gas (F&G) protection, Burner Management Systems (BMS), High Integrity Pressure Protection Systems (HIPPS), and turbomachinery control (TMC).
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