Triconex 3503E 32-Channel TMR Digital Input Module 24VAC/DC
Introduction:
The Triconex 3503E is a TMR digital input module with 32 channels, 24VAC/DC input, self-test function, and 1500VDC point isolation for industrial safety control systems.
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Product Attributes:
Manufacturer: Triconex
Series: Tricon
Part Number: 3803E
Type: TMR Digital Input Modules
Condition: In Stock
Origin: U.S.A
Shipping Port: Xiamen
Warranty: one year
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Description
Inquiry
The Triconex 3503E is a high-reliability TMR (Triple Modular Redundant) digital input module designed for Tricon safety and control systems. It features 32 digital input points, commoned in groups of 8, to simplify wiring and installation in industrial environments. This module supports 24 VAC/VDC input voltage, with a recommended input range of 20-42.5 VAC/VDC and a maximum voltage of 42.5 VAC/VDC. Equipped with a self-test function, it can detect stuck-ON conditions—a critical feature for safety systems with de-energize-to-trip capability. All critical signal paths are 100% triplicated, ensuring maximum safety and availability. The module has optical isolation between the field and Tricon system, along with ongoing channel diagnostics, hot-spare capability, and a dark red color code for quick identification in control cabinets. It is mechanically keyed to prevent improper installation, making it suitable for critical industrial safety applications.
Technical Specifications
Module Type & Core Configuration
The Triconex 3503E is a TMR digital input module with a built-in self-test function. It has 32 digital input points, commoned in groups of 8 to optimize wiring efficiency in industrial control cabinets. The module is mechanically keyed to avoid improper installation in configured Tricon chassis, ensuring system integrity.
Input Voltage & Frequency
The 3503E supports 24 VAC/VDC input voltage, with a recommended input range of 20-42.5 VAC/VDC and a maximum voltage of 42.5 VAC/VDC. Its input frequency range covers DC or 47-63 Hz, making it compatible with most industrial power systems.
Switching Levels & Current
The switching level for OFF to ON is >18 VAC/VDC, while ON to OFF is <6 VAC/VDC. The nominal turn-on current is 6-9 mA, ensuring stable signal detection. Typical hysteresis is 4 VAC/VDC, preventing false signals from voltage fluctuations.
Input Delay & Impedance
The Triconex 3503E has an input delay of <8 ms for OFF to ON transitions and <15 ms for ON to OFF transitions, ensuring responsive signal processing. Nominal input impedance is >1.25 KΩ, minimizing load on field devices.
Isolation & Protection
Each input point features 1500 VDC isolation, providing strong protection between the field and Tricon system. This isolation prevents interference and safeguards the module and connected devices from voltage surges or faults.
Power Load & Diagnostics
The nominal field power load per ON point is 0.5 watts, and 1.5 watts at maximum field voltage. The 3503E has comprehensive ongoing diagnostics for each channel; a channel fault activates the module Fault indicator and chassis alarm, without causing module failure. The module operates normally with a single fault and may function with certain multiple faults.
Self-Test Function
The Triconex 3503E includes a self-test function to detect stuck-ON conditions, where circuitry cannot distinguish an OFF state. During self-test, a switch closes to send a zero (OFF) input to the optical isolation circuitry, while the last data reading is frozen in the I/O communication processor.
Physical & Visual Features
The 3503E has a dark red color code for quick identification among other Triconex modules. It requires a separate external termination panel (ETP) with a cable interface to the Tricon backplane, supporting hot-spare capability for uninterrupted operation.
Installation Guide
Start installation by powering down the Triconex chassis to avoid electrical hazards or module damage. Align the3503E module with the correct mechanically keyed slot in the chassis and slide it firmly until it locks securely. Connect the external termination panel (ETP) to the Tricon backplane using the specified cable interface. Wire the 32 input points, noting they are commoned in groups of 8, and ensure proper polarity for 24 VAC/VDC input. After wiring, restore chassis power and check the module status indicators: PASS and ACTIVE lights confirm normal operation, while the Fault indicator signals channel issues (not module failure). Verify input signals through the host system to ensure accurate detection.
Packaging List
The package includes one Triconex 3503E digital input module, a separate external termination panel (ETP), and an installation manual. It also contains necessary mounting hardware for rack installation. All components are packed in anti-static packaging to prevent electrostatic damage during transit. External wiring, field power supplies, and load devices are not included in the standard package.
Shipping Information
We ship the Triconex 3503E using reliable international carriers: FedEx, UPS, and DHL. All orders are processed promptly to minimize lead time and ensure on-time global delivery. Packages are protected against shock, vibration, and electrostatic discharge to prevent damage. A tracking number is provided once the order is dispatched for full shipment visibility.
Frequently Asked Questions (FAQs)
How many input channels does the Triconex 3503E have?
The Triconex 3503E has 32 digital input channels, commoned in groups of 8 to simplify wiring and installation in industrial control cabinets.
What voltage range does the 3503E support?
The 3503E supports 24 VAC/VDC input, with a recommended range of 20-42.5 VAC/VDC and a maximum voltage of 42.5 VAC/VDC, compatible with most industrial power systems.
Does the Triconex 3503E have a self-test function?
Yes, the Triconex 3503E includes a self-test function to detect stuck-ON conditions. During self-test, a zero (OFF) input is sent to optical isolation circuitry, and the last data reading is frozen in the I/O communication processor.
What is the input isolation of the 3503E?
Each input point of the Triconex 3503E has 1500 VDC isolation, protecting the module and Tricon system from interference and voltage surges.
What color code is the Triconex 3503E?
The Triconex 3503E has a dark red color code, allowing technicians to quickly identify it in control cabinets among other Triconex modules.
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