ICS Triplex T8461 Digital Output TMR Module Product Description
Introduction:
The ICS Triplex T8461 is a 48Vdc Digital Output TMR Module with 40 channels, 20-32Vdc supply, 0.75A/channel current, Ord/HazLoc/ATEX/IECEx certifications, designed for fault-tolerant industrial control applications.
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Product Attributes:
Manufacturer: Allen-Bradley
Series: Trusted TMR Series
Part Number: T8461
Type: Digital Output TMR Module
Condition: In Stock
Origin: U.S.A
Shipping Port: Xiamen
Warranty: one year
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Description
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Product Overview
The ICS Triplex T8461 is a high-reliability Digital Output TMR (Triple Modular Redundant) Module engineered for critical industrial control systems. Manufactured by ICS Triplex, it features 40 output channels divided into 5 independent power groups (8 outputs each), ensuring fault tolerance and stable performance in harsh industrial environments. The T8461 operates with a system supply voltage range of 20 to 32Vdc and supports an operational field voltage range of 18 to 60Vdc, making it versatile for various industrial applications such as oil & gas, petrochemical, and power generation. Its fully triplicated circuit design with optional line monitoring enhances reliability, while built-in electronic short circuit protection and self-test functions ensure safe and continuous operation.
Technical Specifications
Power Supply Specifications
The ICS Triplex T8461 is equipped with a stable dual power supply design to meet the demands of critical industrial operations. Its system supply voltage ranges from 20 Vdc to 32 Vdc, with a power consumption of 22W at 24V system supply. The field supply consumes 18W at 24V when each channel operates at 0.75A, providing sufficient power to drive multiple loads without performance degradation. This power supply design ensures compatibility with most industrial power systems and maintains stability even under voltage fluctuations.
Input and Output Specifications
The T8461 features 40 digital output channels, divided into 5 independent power groups with 8 outputs per group, offering flexible load distribution. Each channel has a continuous current rating of 0.75A, while each power group can handle a maximum current of 6A (14W), supporting a wide range of industrial loads. The module’s operational output/field voltage range is 18 to 60Vdc, with an output voltage measurement range of 0 to 60Vdc and a maximum withstanding voltage of -1 to 60Vdc.
Other key output specifications include a minimum on-state load current of 25mA and an output on-state resistance of 0.6Ω, ensuring efficient power transmission. The output off-state resistance (effective leakage) is 33kΩ, minimizing power loss when channels are inactive. For capacitance handling, Release 3.5 supports a maximum pre-release capacitance of 30-55uF and at least 3500uF at 0.75A, making it suitable for flashing/pulsing current loads (Release 3.5 is recommended for such applications).
Redundancy and Reliability
As a TMR module, the ICS Triplex T8461 adopts a fully triplicated circuit design with optional line monitoring, ensuring fault tolerance in critical applications. This design means three independent channels work simultaneously, allowing the module to continue operating even if one channel fails, meeting high safety integrity requirements. The module is equipped with electronic latching short circuit protection that activates automatically, preventing damage from overloads or short circuits.
It also features a self-test interval of 2 minutes, enabling continuous monitoring of module performance and quick fault detection. Channel-to-channel crosstalk is greater than -40dB, ensuring no interference between channels, while field common isolation offers sustained working voltage of ±250Vdc and maximum withstanding voltage of ±2.5kVdc, enhancing electrical safety.
Environmental Tolerance
The T8461 is built to withstand harsh industrial environmental conditions, making it suitable for use in diverse locations. Its operating temperature range is -5°C to 60°C (23°F to 140°F), while the non-operating temperature range is -25°C to 70°C (-13°F to 158°F), with a maximum temperature change rate of 0.5ºC per minute. Operating humidity ranges from 5% to 95% RH non-condensing, preventing moisture-related damage and ensuring stable performance in humid environments. For detailed environmental specifications, refer to Document 552517.
Certifications
The ICS Triplex T8461 holds multiple international certifications to ensure compliance with global safety and quality standards. These certifications include Ord, HazLoc, ATEX, and IECEx, making it suitable for use in hazardous areas and confirming its adherence to strict industrial safety requirements. The module also supports intrinsic safety through external barriers, further expanding its application scope in high-risk environments.
Timing and Response Specifications
The T8461 delivers fast response times to meet the demands of real-time industrial control. Its output turn-on and turn-off delay is 0.5ms, ensuring quick load activation and deactivation. The sample update time is also 0.5ms, providing real-time monitoring and control of output channels. For sequence of events, the module offers an event resolution of 1ms and a time-stamp accuracy of ±0.5ms, enabling precise tracking of system events for troubleshooting and analysis.
Physical and Other Specifications
The T8461 has a compact and robust design with dimensions of 266mm (height) × 31mm (width) × 303mm (depth) (10.5ins × 1.2ins × 12ins), making it easy to install in standard industrial control cabinets. It has a gross weight of 1.285kg (2.8lbs), which is lightweight enough for convenient handling and installation. The module is designed for easy integration with existing control systems, supporting seamless compatibility with PLC, DCS, and SCADA systems commonly used in industrial settings.
Installation Guide
Before installing the ICS Triplex T8461 Digital Output TMR Module, complete all necessary preparation steps to ensure safe and proper installation. First, check the installation site to ensure there is sufficient space for the module and proper ventilation to prevent overheating. Clean the installation area to remove dust, debris, and any conductive materials that may affect the module’s performance.
Prepare the required tools, including a screwdriver, wrench, voltage tester, and wiring tools, to facilitate a smooth installation process. Mount theT8461 on a standard DIN rail in the control cabinet, ensuring the mechanical connection is firm and secure to avoid vibration-related issues. Connect the system supply wires to the module’s power terminals, ensuring the voltage is within the 20-32Vdc range to prevent damage.
When wiring the output channels, connect each load to the designated channel terminals, ensuring the load current does not exceed 0.75A per channel or 6A per power group. For field supply connections, ensure the voltage is within the 18-60Vdc range and that all connections are secure to avoid loose contacts. If using external barriers for intrinsic safety, follow the manufacturer’s guidelines to wire the barriers correctly.
After wiring, double-check all connections to ensure they are correct and secure. Power on the module and run the self-test function to verify that all channels and systems are working properly. Monitor the module’s status indicators to confirm no faults are present, and make any necessary adjustments to ensure optimal performance.
Packing List
The packing list for the ICS Triplex T8461 Digital Output TMR Module includes the following items:
- 1 × ICS Triplex T8461 Digital Output TMR Module
- 1 × Installation Manual (English version)
- 1 × Wiring Diagram Sheet
- Mounting Screws (4 pieces)
- Anti-static Packaging Bag
- Product Datasheet (including Document 552517 reference)
Shipping is available via FedEx, UPS, or DHL, ensuring fast and reliable delivery to your location.
Frequently Asked Questions (FAQs)
1. How many output channels does the ICS Triplex T8461 have, and how are they grouped?
The T8461 has 40 digital output channels, divided into 5 independent power groups with 8 outputs per group. This grouping allows for flexible load distribution and protects against overloading a single power source.
2. What is the maximum current rating for each channel and power group of the T8461?
Each output channel of theT8461 has a continuous current rating of 0.75A, while each power group (8 channels) can handle a maximum current of 6A (14W). This ensures the module can drive a wide range of industrial loads safely.
3. What is the operating temperature range of the ICS Triplex T8461?
The T8461 operates within a temperature range of -5°C to 60°C (23°F to 140°F), making it suitable for use in most industrial environments, including moderate cold and hot locations.
4. Does the T8461 module have short circuit protection, and how does it work?
Yes, the T8461 features electronic latching short circuit protection that activates automatically. When a short circuit is detected, the protection mechanism latches to prevent damage to the module and connected loads, requiring a manual reset to restore operation.
5. What certifications does the ICS Triplex T8461 hold, and what do they indicate?
The T8461 holds Ord, HazLoc, ATEX, and IECEx certifications, indicating it meets global safety standards for use in hazardous areas. These certifications ensure the module is safe and reliable in high-risk industrial environments, such as oil & gas facilities.
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