IS230TICIH2A - Isolated Digital Input Terminal Board

SPECIFICATIONS:

Part Number: IS230TICIH2A
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 Deg 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

FREQUENTLY ASKED QUESTIONS:

IS230TICIH2A 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) 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 plug in to support a variety of system configurations.

INSTALLATION:

Wiring: 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 chassis ground is located immediately to the left of each terminal block.

Cabling Connections: 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 VI or Mark VIe system, and the level of redundancy.

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 from the active electronics. There are two groups of the TICI with different nominal voltage thresholds.

TICIH1 input voltage ranges are:

• 70 - 145 V dc, nominal 125 V dc, with a detection of 39 to 61 V dc
• 200 - 250 V dc, nominal 250 V dc, with a detection of 39 to 61 V dc
• 90 - 132 V rms, nominal 115 V rms, 47-63 Hz, with a detection of 35 to 76 V ac
• 190-264 Vrms, nominal 230 V rms, 47-63 Hz, with a detection of 35 to 76 V ac

TICIH2 input voltage range is:

• 16-32 V dc, nominal 24 V dc, with a detection threshold of 9.5 to 15 V dc
• For dc applications, the time delay is 15 � 8 ms
• For AC applications, the time delay is 15 � 13 ms

DIAGNOSTICS:

• The excitation voltage is monitored. If the excitation drops to below 40% of the nominal voltage, a diagnostic alarm is set and latched by the I/O pack.
• As a test, all inputs associated with this terminal board are forced to the open contact (fail-safe) state. Any input that fails the diagnostic test is forced to the failsafe state, and a fault is created.
• If the input from this board does not match the TMR-voted value from all three boards, a fault is created.
• Each terminal board connector has its own ID device that is interrogated by the I/O pack. The connector ID is coded into a read-only chip containing the board serial number, board type, revision number, and the JR1/JS1/JT1 connector location. When the chip is read by the controller and a mismatch is encountered, a hardware incompatibility fault is created.

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.

FREQUENTLY ASKED QUESTIONS:

What types of input signals can it handle?

The board typically accepts digital signals such as ON or OFF, contact closures, or logic-level pulses from switches, sensors, or other field devices. Signal specifications, including voltage and current ranges, depend on the board�s design and manufacturer guidelines.

What is the maximum input voltage the board can handle?

The maximum input voltage is typically specified by the manufacturer and can range from 24 V DC to 250 V AC or DC, depending on the board model. Exceeding this limit may damage the board or trigger protective circuits, so always verify the specifications before connecting devices.

How many input channels does a standard board support?

Most isolated digital input boards support multiple channels, commonly between 8 to 32 inputs per board. Channel count varies based on the board design and the control system it is intended for.