Overview
The ICS Triplex T8451 Trusted 24 Vdc Digital Output Module provides reliable control for industrial automation applications. Moreover, its Triple Modular Redundant (TMR) design ensures fault-tolerant operation, maintaining system reliability even under harsh conditions. The module supports 40 output channels divided into 5 independent power groups, providing flexible load distribution. In addition, on-board diagnostics, line monitoring, and electronic short-circuit protection enhance operational safety and uptime.
Functional Highlights
- Triple Modular Redundancy: Each output channel is fully triplicated for maximum reliability.
- Automatic Diagnostics: Self-tests and line monitoring detect open or short circuits continuously.
- Sequence of Events Reporting: SOE logs events with 1 ms resolution for accurate output tracking.
- Hot Replacement: Supports online replacement using Companion Slot or SmartSlot configurations.
- Output Protection: Electronic latching safeguards prevent damage from output short circuits.
- Intrinsic Safety: Compatible with external barriers to comply with hazardous area requirements.
- TÜV SIL 3 Certified: IEC 61508 compliance ensures high safety integrity for critical operations.
Technical Data
| Parameter | Specification | 
|---|---|
| System Supply Voltage Range | 20–32 V dc | 
| Field Voltage Range (Operational) | 18–32 V dc | 
| Number of Outputs | 40 Channels | 
| Power Groups | 5 independent groups, each 8 outputs | 
| Continuous Output Current | 2A per channel, 8A per group | 
| Output Voltage Measurement Range | 0–32 V dc | 
| Maximum Withstanding Output Voltage | -1 V to 40 V dc | 
| Output Off-State Resistance (Leakage) | 33 Ω | 
| Output On-State Resistance | 0.6 Ω | 
| Crosstalk Between Channels | > -40 dB | 
| Minimum On-State Load Current | 50 mA | 
| Power Consumption | 24 W (field supply, 1A per channel) | 
| Operating Temperature | -5 °C to 60 °C | 
| Non-Operating Temperature | -25 °C to 70 °C | 
| Humidity | 5%–95% RH, non-condensing | 
| Dimensions (L×W×H) | 30 × 3 × 24.1 cm (11.8 × 1.2 × 9.5 in) | 
| Weight | 1.13 kg (2.5 lb) | 
| Vibration | 10–57 Hz ±0.075mm; 57–150 Hz 1.0g | 
| Shock | 15g, ½ sine wave, 11 ms | 
| ESD | Air 15 kV; Contact 8 kV | 
| EMI | Radiated 10 V/m, 27–500 MHz | 
| Transients & Bursts | 2 kV, 2.5 kHz for 60 s | 
System Integration & Applications
The T8451 module integrates seamlessly with TMR safety-critical systems. Therefore, it is ideal for:
- Industrial process automation systems requiring precise digital output control.
- High-reliability applications where fault tolerance is critical for uptime.
- Environments demanding intrinsic safety with external barrier compatibility.
- Systems requiring detailed event logging with 1 ms SOE resolution.
Moreover, its hot-replacement capability and advanced diagnostics ensure minimal disruption during maintenance and continuous operations.
Details
| Weight | 1.13 kg | 
|---|


 
 
 
 
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