T8403 | ICS Triplex Trusted Series | 24 VDC Digital Input Module

Product Description

The ICS Triplex T8403 Digital Input Module is part of the Trusted TMR (Triple Modular Redundancy) system, designed to deliver fault-tolerant digital input acquisition for safety-critical applications. Operating at 24 VDC, the module provides reinforced field isolation, configurable thresholds, and precise event resolution, making it suitable for demanding industrial environments.

Technical Specifications

• Manufacturer: ICS Triplex

• Model: T8403

• Product Type: Digital Input Module

• Field Common Isolation:

• 50 V reinforced (continuous)

• 250 V basic (fault condition)

• Type tested at 2436 VDC for 60 seconds

• Channel-to-Channel Isolation: None

• Fusing: None

• Input Impedance: 5 kΩ

• Measurement Range: –6 VDC to +36 VDC

• Thresholds: Configurable

• Maximum Withstanding Voltage: ±50 VDC

• Safety Accuracy: 0.5 VDC

• Intrinsic Safety: Not included (external barrier required)

• Sequence of Events:

• Event Resolution (LSB): 1 ms

• Timestamp Accuracy: ±10 ms

• Environmental Conditions:

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: –25 °C to +70 °C

• Relative Humidity: 10%–95% (non-condensing)

• Physical Dimensions:

• Height: 266 mm (10.5 in)

• Width: 31 mm (1.2 in)

• Depth: 303 mm (12.0 in)

• Weight: 1.18 kg (2.6 lbs)

Key Features

• Reinforced isolation for field common connections.

• Configurable input thresholds for flexible integration.

• High-resolution event logging with 1 ms resolution.

• Redundant safety architecture with TMR design.

• Rugged construction for industrial environments.

Application Scenarios

• Safety instrumented systems requiring precise digital input monitoring.

• Power generation and chemical processing plants.

• Aerospace and defense systems with strict reliability requirements.

• Distributed control systems where event resolution and timestamp accuracy are critical.

FAQ

Q: Does the T8403 provide channel-to-channel isolation?  A: No, channel-to-channel isolation is not included.

Q: Is intrinsic safety supported?  A: No, external barriers are required for intrinsic safety compliance.

Q: What is the event resolution capability?  A: The module records events with 1 ms resolution and ±10 ms timestamp accuracy.

Q: Can the module withstand voltage surges?  A: Yes, it can withstand up to ±50 VDC.