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TECHNICAL SPECIFICATIONS:
Part Number: IS230TICIH3A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Isolated Digital Input Terminal Board
Number of Channels: 24
Input Voltage: 16 to 32 V dc
Power supply voltage: 28 V dc
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: -30 to 65�C
Size: 17.8 cm high x 33.02 cm wide
Repair: 3-7 Days
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States
Manual: GEH-6721D
IS230TICIH3A is an Isolated Digital Input Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The isolated digital input terminal board (TICI) provides 24-point isolated voltage detection circuits to sense a range of voltages across relay contacts, fuses, and switches. In the Mark VIe system, the PDIA I/O packs plug into the TICI. One, two, or three PDIA packs plugins to support a variety of system configurations.
INSTALLATION:
The 24 isolated digital inputs are wired directly to two I/O terminal blocks mounted 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 the chassis ground is located immediately to the left of each terminal block. For a simplex system, connector JR1 is used; for a TMR system, all three connectors are used. Cables or I/O packs are plugged in depending on the type of Mark VIe system and the level of redundancy. For a Mark VIe system, the I/O packs are plugged into TICI and attached to side-mounting brackets. One or two Ethernet cables are plugged into the pack, and firmware may need to be downloaded.
OPERATION:
The TICI is similar to the TBCI, except for the following items: No contact excitation is provided on the terminal board. Each input is electrically isolated from all others and the active electronics. There are two groups of the TICI with different nominal voltage thresholds. TICIH3 input voltage ranges are:
WOC maintains the largest inventory of genuine OEM replacement parts for GE Distributed Control Systems, ensuring rapid access to hard-to-find components and minimizing downtime for your operations. In addition to supplying new parts, we provide comprehensive repair services for faulty boards, using skilled technicians and industry-standard testing to restore equipment to full functionality. We also offer fully refurbished and rebuilt boards that are rigorously inspected and performance-verified, all supported by a warranty for added reliability and peace of mind. Our dedicated team of automation experts is available 24/7 to support your needs, offering technical guidance, troubleshooting assistance, and tailored solutions to keep your systems running smoothly. For pricing, availability, or to discuss your specific requirements, please contact us by phone or email. Our team is ready to assist you at any time.
What is GE IS230TICIH3A?
It is an Isolated Contact Input Terminal Board assembly built by General Electric for Mark VIe distributed control networks. It interfaces external pre-powered switch signals into the digital control backplane.
How does the H3A sub-variant handle hardware redundancy?
The H3A group supports TMR (Triple Modular Redundant) installations. It fans out field contact inputs to three parallel multi-pin connectors to communicate with three individual PDIA I/O packs simultaneously.
How does isolation benefit digital input detection?
Isolation separates the input circuits from the control electronics, preventing ground loop currents and minimizing electrical noise. This ensures that faults or voltage spikes on the field side do not affect the control system. It also improves safety by reducing the risk of electrical interference propagating through the system. In high-voltage or noisy environments, isolation is essential for stable operation.
What voltage ranges does the TICIH3A support?
The TICIH3A supports both DC and AC voltage input ranges with two threshold groups. It can detect DC voltages of 70�145 Vdc and 200�250 Vdc, with detection thresholds around 39�61 Vdc. For AC inputs, it supports 90�132 Vrms and 190�264 Vrms, with detection thresholds around 35�76 Vac at 47�63 Hz. These ranges allow compatibility with various field devices and industrial control signals.
