ICS Triplex D0-C5S3 Redundant PLC Module

Technical Overview

• Primary Function: The ICS Triplex DO-C5S3 is a high-integrity, 32-channel solid-state output module engineered for the Trusted™ safety platform.

• Problem Solved: It provides fail-safe control for critical field devices such as solenoid valves and actuators, ensuring that a single hardware failure cannot result in a loss of safety function or an unplanned process shutdown.

• System Reliability: By utilizing a Triple-Modular Redundant (TMR) architecture and achieving SIL 3 certification, the DO-C5S3 offers the highest level of fault tolerance and availability for emergency shutdown (ESD) and fire and gas (F&G) systems.

Detailed Technical Specifications

The DO-C5S3 is defined by its robust output capacity and comprehensive diagnostic coverage:

• Model Number: DO-C5S3

• Product Series: ICS Triplex Trusted™

• Architecture: Triple-Modular Redundancy (TMR)

• Safety Rating: SIL 3 Certified (IEC 61508)

• Output Configuration: 32 Solid-State Outputs

• Nominal Output Voltage: 24 VDC

• Output Current: 0.5 A per channel (Continuous)

• Isolation: Galvanic isolation between field channels and the high-speed controller backplane.

• Logic Power Requirement: 5 VDC (via backplane)

• Environmental Limits: -40 °C to +70 °C (-40 °F to +158 °F) operating range.

• Humidity Tolerance: 5% to 95% RH (Non-condensing)

Key Engineering Features

• Fault-Tolerant TMR Design: The module employs three independent processing paths with internal voting logic. If one path fails, the remaining two maintain the correct output state, allowing the process to remain online while signaling for maintenance.

• Integrated Line Monitoring: Features advanced onboard diagnostics capable of detecting both "Open-Circuit" and "Short-Circuit" conditions on the field-side wiring, ensuring the integrity of the safety loop at all times.

• Solid-State Reliability: The use of high-performance solid-state switching components eliminates the mechanical wear associated with traditional relays, significantly extending the module's mean time between failures (MTBF).

• Galvanic Protection: Robust isolation shields the sensitive internal processor electronics from electrical noise, transients, and voltage surges originating from the field-side 24 VDC power supply.

• Extreme Temperature Resilience: Rated for operation down to -40 °C, this module is suitable for deployment in unheated field enclosures and harsh outdoor industrial environments.