ICS Triplex T8451 24/48V DC Digital Output Module – 40 Channel Guide Specification Details Manufacturer ICS Triplex Product No T8451 Product Type Trusted™ Module System Supply Voltage Range 20 to 32 Vdc Circuit Type Fault tolerant, fully triplicated with optional line monitoring Number of Outputs 40 Channels Independent Power Groups 5 each of 8 outputs Operational Output/Field Voltage Range 18 to 32 Vdc Output Voltage Measurement Range 0 to 32 Vdc Maximum Withstanding Voltage -1 to 40 Vdc Output Current Rating (Continuous) 2A per channel, limited to 8A per power group Maximum Capacitance Pre release 3.5: 30-55 µF Flashing/Pulsing Current Loads Release 3.5 is recommended Minimum On-State Load Current 50 mA Output Off-State Resistance 33 Ω (effective leakage) Output On-State Resistance 0.6 Ω Output Short Circuit Protection Electronic (latching) Channel-to-Channel Crosstalk > -40 dB Product Overview of the ICS Triplex T8451 24/48V DC Digital Output Module The ICS Triplex T8451 24/48V DC Digital Output Module is a versatile, high-performance module designed for interfacing with up to 40 field devices. Engineered with a Triple Modular Redundant (TMR) architecture, this module is built to ensure fault tolerance and operational reliability, making it suitable for demanding industrial environments. The T8451 continuously performs diagnostic tests on each channel, measuring current and voltage to detect potential faults. It can also identify “stuck on” or “stuck off” failures, ensuring uninterrupted functionality and safe operation. This digital output module includes automatic line monitoring, enabling it to detect open and short circuits in field wiring and load devices. It is also equipped with on-board Sequence of Events (SOE) reporting, which records any output changes with a 1 ms resolution. However, it should be noted that the module is not approved for direct connection to hazardous areas and should be used in conjunction with Intrinsic Safety Barrier devices for such applications. Key Features of the ICS Triplex T8451: 1.Triple Modular Redundant (TMR) Design The ICS Triplex T8451 leverages TMR technology, providing 40 output points that ensure each channel is protected against faults. The TMR system reduces the risk of failure and allows for continuous operation even if one part of the module encounters a problem. This design is particularly valuable for critical applications where downtime could lead to significant operational issues or safety risks. 2.Comprehensive Diagnostics and Self-Testing To further enhance reliability, the T8451C includes automatic diagnostic and self-testing capabilities. Each channel is monitored in real-time for voltage and current levels, and the module can detect and isolate issues such as open circuits, short circuits, and stuck outputs. These diagnostics run continuously without impacting module performance, ensuring that any fault is quickly identified and addressed. 3.Automatic Line Monitoring The T8451 provid...
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