Product Description

The ICS Triplex Trusted TMR T8461 digital output module is engineered for high-integrity safety and control systems. With 40 output channels organized into five independent power groups, it provides robust fault tolerance and precise switching performance. Designed for demanding industrial environments, the T8461 supports a wide operational voltage range, electronic short-circuit protection, and rapid response times, ensuring reliable operation in critical applications.

Technical Specifications

• Manufacturer: ICS Triplex

• Model / Catalog Number: T8461

• Product Type: Digital Output Module

• System Supply Voltage Range: 20–32 VDC

• Operational Output/Field Voltage Range: 18–60 VDC

• Output Voltage Measurement Range: 0–60 VDC

• Maximum Withstanding Voltage: -1 to 60 VDC

• Output Current Rating:

• Continuous: 0.75 A per channel

• Per Power Group: 6 A

• Power Consumption:

• Field Supply at 24 V (0.75 A per channel): 18 W

• System Supply at 24 V: 22 W

• Number of Outputs: 40 channels

• Independent Power Groups: 5 (8 outputs each)

• Minimum On-State Load Current: 25 mA

• Off-State Resistance (Leakage): 33 kΩ

• Maximum Capacitance:

• Pre-release 3.5: 30–55 μF

• Release 3.5: ≥3500 μF at 0.75 A

• Output On-State Resistance: 0.6 Ω

• Protection: Electronic latching short-circuit protection

• Channel Crosstalk: > -40 dB

• Timing Characteristics:

• Output turn-on/off delay: 0.5 ms

• Sample update time: 0.5 ms

Features

• Triple Modular Redundant (TMR) architecture for fault tolerance

• High-speed switching with 0.5 ms response time

• Electronic short-circuit protection with latching design

• Independent power groups for flexible load distribution

• Line monitoring for enhanced diagnostics

Application Scenarios

• Safety-critical process industries such as oil & gas, chemical, and power generation

• Large-scale automation systems requiring redundant digital outputs

• Harsh industrial environments demanding continuous reliability

FAQ

Q: How many output channels does the T8461 provide?  A: 40 channels divided into 5 independent power groups.

Q: What is the maximum continuous current per channel?  A: 0.75 A per channel.

Q: Does the module include short-circuit protection?  A: Yes, electronic latching short-circuit protection is built in.

Comparison with Similar Models

• T8461: 40-channel digital output, 24/48 VDC, TMR architecture.

• T8460: Lower channel density, suited for smaller systems.

• T8462: Enhanced diagnostics and extended current capacity.