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IS230TNCIH6C - Contact Input TMR DIN-Rail Module is available in stock which ships the same day.
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TECHNICAL SPECIFICATIONS:
Part Number: IS230TNCIH6C
Manufacturer: General Electric (GE)
Series: Mark VIe
Functional Acronym: TNCI
Product Type: Contact Input TMR DIN-Rail Module
Hardware Revision: Group 6 Architecture, REV C
Redundancy Configuration: Triple Modular Redundant (TMR)
Total Channel Capacity: 24 dry contact discrete input channels
Wetting Voltage Nominal Baseline: 48 V DC
Wetting Voltage Range: 38-56 V DC
Input Threshold Voltages: >28 V DC
State 2 (False / Open): <18 V DC
Contact Wetting Current Baseline: 2.5 mA per channel
Input Filter Delay: 4.0 ms
Channel-to-Channel Isolation: None (group isolated)
Group-to-Logic Isolation: 1500 V RMS galvanic opto-isolation barrier
Time-Stamping Resolution: 1.0 ms accuracy across all 24 channels
Mounting Configuration: Standard 35 mm DIN-rail mount
Circuit Board Protection: Conformal PCB coating
System Power Input: 28 V DC
Ambient Operating Temperature: -30C to +65C (-22F to +149F)
Storage Temperature: -40C to +85C (-40F to +185F)
Humidity: 5% to 95%
Repair Lead Time: 3-5 Business Days
Availability: In Stock
Country of Origin: United States
The IS230TNCIH6C is a high-density Contact Input TMR DIN-Rail Module designed and manufactured by General Electric for the decentralized I/O layer of the Speedtronic Mark VIe control system. Operating as a hardwired terminal hub within a Triple Modular Redundant (TMR) system architecture, this board accepts binary-state field inputs and fans them out to three parallel processing nodes. It provides critical diagnostic monitoring, localized signal conditioning, and structural fault tolerance for major power generation plants and turbine networks.
HARDWARE WETTING & SIGNAL ISOLATION:
The module is physically and electronically optimized for a 48 V DC nominal wetting voltage baseline. It continuously pushes excitation current through external field limit switches, pushbuttons, and auxiliary mechanical relay contacts. To prevent extreme electrical noise, inductive back-EMF, and common-mode transients from reaching the sensitive low-voltage microcode layer, the board integrates high-density opto-isolation barriers and hardware filters directly onto each independent sensing line.
STRUCTURAL HARDENING & BACKPLANE LINKAGES:
The entire physical profile of the module is optimized for fast, space-saving snap-in mounting on standard industrial 35 mm DIN rails inside termination enclosures. To protect sensitive surface-mount components from degradation over long-term deployment in harsh environments, the printed circuit board assembly is completely sealed with a premium conformal PCB coating. The card extracts low-voltage operating distribution power directly via its backplane system bus cables, eliminating extraneous wire bundles.
WHY PARTNER WITH WORLD OF CONTROLS:
World of Controls provides the industry's most dependable logistics and technical infrastructure for critical turbine control networks. We maintain an extensive inventory of genuine OEM replacement parts for GE Distributed control setups, minimizing operational downtime during emergency outages. Every item, from certified unused surplus to fully rebuilt industrial components, is subjected to strict simulation profiling in our advanced electronics lab and is supplied with a comprehensive product warranty. Our global engineering support network operates 24/7 to deliver troubleshooting advice, component replacement guidance, and component testing evaluations. Contact the WOC sales team directly via phone or email for current pricing, hardware availability, or repair quotes.
What is GE IS230TNCIH6C?
It is a Triple Modular Redundant (TMR) contact input DIN-rail module used in the General Electric Mark VIe control system. It is designed to collect and distribute 24 discrete dry contact signals across three independent processing channels for high-reliability turbine control.
How does the module achieve galvanic isolation?
The Module uses a 1500 V RMS opto-isolation barrier between field inputs and logic processing circuits. This isolation prevents high-voltage transients from propagating into the control system. It also eliminates ground loop interference between the field and controller domains. Isolation is implemented at the group level rather than per channel.
What is the significance of the 2.5 mA wetting current per channel?
The 2.5 mA current ensures reliable excitation of dry contacts without causing contact degradation. It is limited to prevent overheating or arcing in field devices. This low-level excitation also improves signal integrity over long wiring distances. It balances sensitivity and electrical safety.
How does the wetting voltage circuit function in TNCIH6C?
The module supplies a continuous wetting voltage of 48 V DC nominal through external field loops. This voltage passes through field contacts such as switches or relays and returns to the input sensing circuit. The presence or absence of current flow defines the contact state. The system ensures stable detection even in long cable runs.
