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SPECIFICATIONS:
Part Number: IS230TICIH1A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Isolated Digital Input Terminal Board
Number of Inputs: 24
Power supply voltage: 28 V dc
Voltage Range: 16-32 V dc
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: -30 to +65°C
Size: 17.8 cm high x 33.02 cm
Repair: 3-7 Days
Availability: In Stock
Country of Origin: United States
Manual: GEH-6421H
FUNCTIONAL DESCRIPTION:
IS230TICIH1A is an Isolated Digital Input Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Turbine Control Systems. The Isolated Digital Input Terminal Board (TICI) is designed to provide reliable 24-point isolated voltage detection circuits, enabling precise monitoring of discrete signals across various control components such as relay contacts, fuses, and switches. Each input channel is electrically isolated to prevent interference and ensure accurate detection, making it suitable for complex turbine control and industrial automation systems. The board’s design supports a wide range of input voltages, providing flexibility in interfacing with different types of field devices while maintaining high signal integrity and protection against electrical noise.
The TICI board functions as the interface for PDIA I/O packs, which plug directly into the terminal board to extend the system’s input capacity. Depending on the configuration requirements, one, two, or three PDIA packs can be installed, allowing the system to accommodate a variety of input arrangements and expandability needs. This modular approach ensures that the Mark VIe system can be tailored for different turbine control applications while maintaining a standardized, compact, and serviceable architecture for digital input monitoring.
INSTALLATION:
Wiring: The 24 isolated digital inputs on the TICI terminal board are connected directly to two dedicated I/O terminal blocks, providing organized and serviceable wiring for system integration. Each terminal block is secured with two screws but can be easily unplugged from the board for inspection, maintenance, or replacement, ensuring minimal downtime. The blocks feature 24 individual terminals capable of accepting wires up to #12 AWG, accommodating a wide range of field wiring sizes. Additionally, a shield terminal strip, mounted adjacent to each block and connected to chassis ground, provides effective noise suppression and electromagnetic interference protection, ensuring reliable signal integrity in industrial environments.
Cabling Connections: Cabling and I/O connections are configured based on the system type and redundancy requirements. In a simplex system, a single connector labeled JR1 is utilized, whereas in a Triple Modular Redundant (TMR) system, all three connectors are engaged to maintain redundancy across the inputs. Depending on the Mark VI or Mark VIe system configuration, the appropriate cables or PDIA I/O packs are plugged in, allowing the terminal board to interface seamlessly with the control system. This modular cabling approach provides flexibility, supports system scalability, and ensures consistent performance across varying operational setups.
OPERATION:
The operation of the TICI terminal board closely resembles that of the TBCI, with a few key differences that define its functionality. Unlike the TBCI, the TICI does not provide contact excitation on the terminal board, meaning that it relies entirely on externally supplied voltage signals to detect the state of connected devices such as relays, switches, and fuses. This design allows the TICI to be fully compatible with a variety of field devices while minimizing power consumption and heat generation on the board itself. There are two groups of the TICI with different nominal voltage thresholds. TICIH1 input voltage ranges are:
WOC maintains one of the largest inventories of replacement parts for GE Distributed Turbine Control Systems, ensuring that our customers have quick and reliable access to the components they need. In addition to supplying new and unused parts, we specialize in repairing faulty boards and providing fully tested, rebuilt boards, all backed by a comprehensive warranty for peace of mind.
Our team of highly trained experts is available 24/7 to support your OEM requirements and provide guidance on system maintenance, upgrades, and automation solutions. Whether you need immediate parts replacement, technical consultation, or repair services, WOC is committed to delivering prompt, reliable, and professional support. For detailed information on pricing, availability, or to discuss your specific automation needs, please contact our team directly via phone or email.
What is the main purpose of the TICI terminal board?
The TICI provides 24 isolated digital input channels to monitor discrete voltage signals from relays, switches, and fuses. Each input is electrically isolated to prevent interference between channels. This ensures accurate detection of field signals while protecting the control system’s active electronics.
How does the TICI differ from the TBCI terminal board?
The TICI does not supply contact excitation on the terminal board. Additionally, each input is fully isolated from all other inputs and the board’s active electronics. This design enhances signal integrity and protects against voltage spikes from field devices.
How are the inputs connected to the terminal board?
The 24 inputs are wired directly to two removable I/O terminal blocks mounted on the board. Each block accommodates wires up to #12 AWG, and a shielded terminal strip grounded to the chassis provides noise suppression. The blocks can be unplugged for maintenance without disturbing other connections.
