Product Overview

The GE IS215VCMIH2CA is a Triple Modular Redundant(TMR)communication and I/O interface module designed exclusively for the GE Mark VIeS safety control system—the SIL-certified variant of the Mark VIe platform used in high-integrity emergency shutdown(ESD),burner management(BMS),and machinery protection applications.

Unlike standard I/O interface modules,the IS215VCMIH2CA operates within a fault-tolerant,voting-based architecture,ensuring that data exchanged between the TMR safety controllers(e.g.,IS215UCVEH2AF or IS215UCVFH2BB)and distributed I/O modules remains consistent,synchronized,and immune to single-point failures.It serves as the backbone for the SafetyNET deterministic Ethernet network within each Mark VIeS I/O core,managing timing,redundancy,and data integrity across all connected TMR I/O cards(such as IS215PDIOH1A or IS215AIINH1A).

By enforcing strict synchronization and continuous cross-channel comparison,the IS215VCMIH2CA ensures that even in the presence of hardware faults or electromagnetic interference,the safety system maintains fail-safe behavior—a requirement for compliance with IEC 61508 SIL 3,API 670,and NFPA 85.

Technical Specifications

Parameter Value

Model IS215VCMIH2CA

Manufacturer GE Vernova(formerly GE Power/GE Digital Energy)

System Compatibility GE Mark VIeS(Safety System Only)

Function TMR Communication&I/O Interface Controller

Safety Certification IEC 61508 SIL 3(as part of Mark VIeS system)

Redundancy Architecture Triple Modular Redundant(3oo2 voting on data paths)

Network Interface Dual redundant SafetyNET(100 Mbps deterministic Ethernet)

I/O Bus Type Proprietary TMR backplane bus(synchronized clock/data)

Operating Temperature 0°C to+60°C

Power Requirement Supplied via Mark VIeS backplane(24 VDC redundant rails)

Diagnostics Per-lane health monitoring,sync status LEDs,ToolboxST integration

Mounting Plug-in module in Mark VIeS I/O chassis

Compliance API 670(Machinery Protection),IEC 61511,NFPA 85

Key Features&Advantages

✅Enables True TMR I/O Operation

The IS215VCMIH2CA coordinates timing and data flow across three parallel I/O lanes,ensuring that analog inputs,discrete signals,and output commands are sampled,voted,and driven in perfect synchrony—critical for preventing dangerous undetected failures.

✅Deterministic SafetyNET Management

Manages low-latency(<1 ms node-to-node)communication between the safety controller and remote or local I/O racks,supporting fast shutdown sequences(e.g.,turbine trip within 10 ms of overspeed detection).

✅Integrated Diagnostics&Fault Isolation

Provides real-time visibility into lane-specific errors(e.g.,“Lane B Sync Loss”or“I/O Bus CRC Fault”)via front-panel LEDs and ToolboxST™,enabling rapid troubleshooting without system downtime.

✅Seamless Integration with UCVE/UCVF Controllers

Works in tandem with IS215UCVEH2AF or IS215UCVFH2BB safety CPUs to form a complete,certified TMR safety logic solver—handling all I/O marshaling,timestamping,and redundancy management.

✅Cyber-Secure by Design

Supports secure firmware validation and authenticated communication within the SafetyNET domain,aligned with IEC 62443 principles for industrial automation security.

Typical Applications

Turbine Overspeed Protection Systems(API 670 compliant)

Emergency Shutdown(ESD)Systems in refineries and LNG plants

Burner Management Systems(BMS)for boilers and fired heaters(NFPA 85)

Fire&Gas(F&G)Detection and Mitigation in offshore platforms

Compressor Surge&Lube Oil Protection in pipeline stations

Reactor Trip Systems in chemical processing

In all these scenarios,the IS215VCMIH2CA ensures that sensor data reaches the safety logic solver accurately and that trip commands reach final elements(valves,breakers,solenoids)without delay or corruption—even during partial hardware degradation.

Related Products

IS215UCVFH2BB/IS215UCVEH2AF:TMR Safety CPU Modules

IS215VPROH1A:TMR Voting&Power Supply Backplane Module

IS215PDIOH1A:TMR Discrete I/O Module

IS215AIINH1A:TMR Analog Input Module

IS215RAIOH1A:TMR Remote I/O Adapter

Mark VIeS Safety Application Builder(SAB):Certified safety logic programming

ToolboxST™:Engineering,diagnostics,and maintenance software

336A5092Gxx:Terminal blocks or cabling kits(verify compatibility)

Installation&Maintenance

🔧Installation Guidelines

Install only in a certified Mark VIeS I/O rack with proper grounding and cooling.

Ensure the VPRO backplane(e.g.,IS215VPROH1A)is correctly seated—VCMI relies on its power and sync signals.

Do not mix Mark VIe(non-safety)and Mark VIeS modules in the same chassis.

Verify SafetyNET cable routing per GE’s EMC best practices(avoid VFD or high-voltage sources).

🛠️Maintenance Best Practices

Monitor ToolboxST for“I/O Lane Mismatch”or“Sync Error”alarms—early indicators of backplane or module issues.

During outages,inspect connector pins for corrosion or bent contacts.

Replace the IS215VCMIH2CA if any lane fails to synchronize during power-up or shows persistent communication faults.

Always replace in sets of three when operating in full TMR mode to maintain hardware commonality.

Product Guarantee

The IS215VCMIH2CA is manufactured under GE’s functional safety quality management system(per IEC 61508-2)and undergoes rigorous environmental and fault-insertion testing.When deployed within a validated Mark VIeS architecture,it contributes to a system-level SIL 3 claim.GE provides a 24-month warranty against manufacturing defects and guarantees compatibility with the Mark VIeS ecosystem per official documentation.

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