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IS200TBCIH3C - Contact Input Terminal Board is available in stock which ships the same day.
IS200TBCIH3C - Contact Input Terminal Board comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS:
Part Number: IS200TBCIH3C
Manufacturer: General Electric (GE)
Series: Mark VIe
Functional Acronym: TBCI
Product Type: Contact Input Terminal Board (Group Isolated)
Hardware Revision: Rev C (Optimized for Mark VIe I/O pack compatibility)
Total Input Channels: 24 dry contact inputs
Nominal Excitation Voltage: 48 V DC
Excitation Voltage Range: 38 V DC to 56 V DC operational loop
Terminal Blocks: Two heavy-duty, barrier-type blocks (TB1 & TB2), 24 terminals each
Wire Gauge Capacity: Supports up to #12 AWG field wiring
Input Current Loading:
Channels 1 to 21: 2.5 mA per point (Standard mechanical contacts)
Channels 22 to 24: 10 mA per point (High-load for solid-state external devices)
Interface Connectors: Three 37-pin female D-type connectors (JR1, JS1, JT1)
System Redundancy: Supports Simplex (via JR1) and TMR (Triple Modular Redundancy using all three links)
Mark VIe I/O Pack Compatibility: PDIA Discrete Input Pack
Noise Suppression: Onboard filters, surge-suppression capacitors, and Metal Oxide Varistors (MOVs)
Substrate Protection: Total conformal coating coverage
Ambient Operating Temperature: -30°C to +65°C (-22°F to +149°F)
Storage Temperature Range: -40°C to +85°C (-40°F to +185°F)
Relative Humidity: 5% to 95% non-condensing
Repair / Evaluation Lead Time: 3–5 Business Days
Availability: In Stock
Country of Origin: United States (USA)
Manual Reference: GEH-6421
The IS200TBCIH3C is a Contact Input (TBCI) Terminal Board designed and manufactured by General Electric for both the distributed Mark VIe turbine control platforms. The Contact Input with Group Isolation (TBCI) terminal board is designed to accept 24 dry contact inputs, featuring noise suppression circuitry to protect against surges and high-frequency noise. It functions by passing discrete input voltage signals to a PDIA I/O pack, which utilizes optical isolators for group isolation before transferring the signals to the controller. The TBCI works with the PDIA I/O pack and supports simplex, dual, and TMR applications. One, two, or three PDIAS can be plugged directly into the TBCI. The Mark VIe control requires the C version of this board for correct mechanical alignment of connector JT1 to the I/O pack mechanical support.
THE 48V DC EXCITATION VARIANT:
Unlike standard TBCI boards configured for common 125V DC power loops (H1) or low-voltage 24V DC loops (H2), the H3 variant is specifically engineered for facilities utilizing a 48V DC excitation network. Power enters the board via specialized plug contacts. The board loops this current-limited 48V DC bus out to each field switch terminal, reading the return path to establish precise open/closed state tracking.
INSTALLATION:
Connect the wires for the 24 dry contact inputs directly to two I/O terminal blocks on the terminal board. These blocks are held down with two screws and can be unplugged from the board for maintenance. Each block has 24 terminals accepting up to #12 AWG wires. A shield terminal strip attached to chassis ground is located immediately to the left of each terminal block. In a simplex system, connect the TBCI to the PDIA I/O pack using connector JR1. In a TMR system, connect TBCI to the three PDIAS using connectors JR1, JS1, and JT1. The PDIAS plugs into TBCI and attaches to side-mounting brackets. One or two Ethernet cables plug into the I/O pack. Firmware may need to be downloaded. Connect TBCI to the contact excitation voltage source using plugs JE1 and JE2.
OPERATION:
Filters reduce high-frequency noise and suppress surge on each input near the point of signal entry. The dry contact inputs on TBCI_1C are powered from a floating 125 V de (100-145 V DC) supply from the turbine control. The 125 V dc bus is current-limited in the power distribution module prior to feeding each contact input. The H2, H3, and H4 versions use lower voltages (refer to the section, Specifications). The discrete input voltage signals pass to the PDIA I/O pack, which sends them through optical isolators providing group isolation and transfers the signals to the Mark VIe controller.
The reference voltage in the isolation circuits sets a transition threshold that is equal to 50% of the applied floating power supply voltage. The tracking is clamped to go no less than 13% of the nominal rated supply voltage to force all contacts to indicate open when voltage dips below this level. A pair of terminal points is provided for each input, with one point (screw) providing the positive de source and the second point providing the return (input) to the board. The current loading is 2.5 mA per point for the first 21 inputs on each terminal board. The last three have a 10 mA load to support interface with remote solid-state output electronics. Contact input circuitry is designed for NEMA Class G creepage and clearance.
WHY PARTNER WITH WORLD OF CONTROLS
World of Controls specializes in supplying high-quality, warranty-backed OEM replacement parts, including unused surplus and professionally rebuilt components, for critical turbine control and industrial automation systems like the General Electric Mark VI and Mark VIe platforms. To minimize customer downtime and ensure original equipment standard compliance, every component undergoes rigorous inspection, testing, and verification in an advanced electronics lab. Beyond parts distribution, the company delivers comprehensive, global support through 24/7 technical assistance, expert troubleshooting, component repair services, and rapid shipping, ensuring optimal efficiency and long-term reliability for critical industrial operations worldwide.
What is GE IS200TBCIH3C?
GE IS200TBCIH3C is a Group-Isolated Contact Input Terminal Board designed for GE Mark VIe turbine control systems. It receives 24 dry contact input signals from field devices and transfers them to the controller through the PDIA Discrete Input I/O Pack. It is designed for 48 V DC excitation applications and supports simplex, dual, and TMR configurations.
What is the function of this Contact Input Terminal Board in a turbine control system?
This terminal board processes discrete input signals from external devices such as switches and relays, providing signal conditioning, noise suppression, and reliable communication between field inputs and the Mark VIe controller.
How many input channels does this terminal board support?
The board supports 24 dry contact input channels, allowing multiple field devices to be connected and monitored within the turbine control system.
Which GE control system is compatible with this terminal board?
This terminal board is designed for GE Mark VIe turbine control platforms and is compatible with the PDIA Discrete Input I/O Pack for simplex, dual, and Triple Modular Redundancy (TMR) applications.
What excitation voltage is supported by this terminal board?
The H3 variant is designed for 48 V DC excitation systems and supports an operational voltage range of 38 V DC to 56 V DC for field contact loops.
Can World of Controls provide repair or replacement for this terminal board?
Yes, World of Controls supplies unused and professionally rebuilt units and provides repair and exchange services with warranty support to help minimize turbine control system downtime.
