CS TRIPLEX T9852 8-Channel Dual Commoned 24VDC Digital Output Module for Trusted TMR Safety System

Product Description

T9852 is a safety-grade digital output module exclusively developed for ICS TRIPLEX Trusted TMR triple modular redundant safety control system, manufactured under Rockwell 

automation safety product line.

It provides 8 isolated 24VDC digital output channels with dual common group design, used to drive field solenoid valves, safety trip relays, motor contactors and alarm indicators in safety 

instrumented systems (SIS). The module adopts TMR triple-voting hardware architecture to eliminate single-point failure risks, fully complying with IEC 61508 SIL3 functional safety standards.

Each channel is equipped with independent fuse protection and optocoupler galvanic isolation to isolate field circuit short-circuit or surge faults from the safety backplane bus. It supports 

hot-swap replacement under redundant rack configuration, enabling online maintenance without safety system shutdown.

Matched with dedicated TA terminal baseplate for field wiring, with built-in channel status LED indicators for real-time fault diagnosis. Conformal coated PCB resists humidity, dust and 

vibration, widely applied as critical spare for oil & gas, refinery, chemical, power plant SIS safety racks.

Technical Specifications

Model: T9852, Brand: ICS TRIPLEX (Rockwell)

Compatible System: Trusted TMR T9030 Safety Control Rack

Output Channels: 8 digital outputs, dual common grouping

Field Operating Voltage: 18–32 VDC nominal 24VDC

Single Channel Load Capacity: Max 100mA per channel

Field Supply Protection: 10A independent fuse per common group

Safety Certification: IEC 61508 SIL 3, IEC 61511

Architecture: Triple Modular Redundant (TMR) voting logic

Isolation: Opto-isolation between field circuit and backplane

Hot Swap: Support hot plug in redundant rack setup

Operating Temperature: -20℃ ~ +70℃

Humidity: 5%–95% non-condensing, conformal coated PCB

Protection Class: IP20 (cabinet installation only)

Mount: Standard rack plug-in, matched TA terminal base

Weight: Approx. 0.68kg

Key Features

TMR triple redundant hardware design, SIL3 certified for high-risk safety instrumented control applications.

8-channel dual-group 24VDC digital outputs for safety valve, trip relay and alarm signal control.

Independent channel fuses and galvanic isolation prevent field fault diffusion to the safety controller backplane.

Hot-swap function allows module replacement without safety system shutdown, reducing plant downtime.

Comprehensive self-diagnosis detects open circuit, short circuit, channel failure and bus communication abnormal.

Front panel LED indicators display power, channel status and fault alarms for rapid on-site troubleshooting.

Dedicated TA terminal base simplifies field sensor wiring and channel expansion layout.

Rugged industrial anti-corrosion coated PCB adapts to long-term 24/7 continuous operation in refinery and offshore hazardous areas.