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IS200TBCIH2BBC - Contact Input with Group Isolation Terminal Board is available in stock which ships the same day.
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SPECIFICATIONS:
Part Number: IS200TBCIH2BBC
Manufacturer: General Electric
Series: Mark VIe
Function: Contact Input Terminal Board
Temperature: -30 to 65 degrees Celsius
No.of channels: 24 contact voltage input channels
Input filter: Hardware filter, 4 ms
Power consumption: 20.6 W on the terminal board
Replacement Module: TBCIH2C
Connection Type: Cables or J-Port
Contact Input: 24
Voltage 24 VDC
Size: 33.02 cm high x 10.16 cm wide
Availability: In Stock
Country of Manufacture: United States (USA)
Manual: GEH-6721_VOL_II
FUNCTIONAL DESCRIPTION:
IS200TBCIH2BBC is a Contact Input with a Group Isolation Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The Contact Input with Group Isolation (TBCI) terminal board accepts 24 dry contact inputs wired to two barrier-type terminal blocks. For contact excitation, dc power is wired to TBCI. The contact inputs have noise suppression circuitry to protect against surge and high-frequency noise.
COMPATIBILITY:
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 the correct mechanical alignment of connector JT1 to the I/O pack mechanical support.
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 the 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 plug into TBCI and attach 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 dc (100-145 V dc) supply from the turbine control. The 125 V dc bus is currently limited in the power distribution module before feeding each contact input. The H2, H3, and H4 versions use lower voltages.
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 the voltage dips below this level.
A pair of terminal points are 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 the interface with remote solid-state output electronics.
WOC has the largest stock of GE Distributed Turbine Control Systems OEM Replacement Parts. We can also repair your faulty boards and supply unused and rebuilt boards backed up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on any parts and repairs, kindly contact our team by phone or email.
What is a Contact Input with the Group Isolation Terminal Board?
A Contact Input with a Group Isolation Terminal Board is a device used to interface multiple contact signals (from switches, sensors, or relays) with control systems like PLCs or DCSs. It provides electrical isolation between input groups to prevent faults from propagating and ensures reliable signal transmission.
What is the voltage rating for the contact inputs?
The voltage rating typically ranges from 12V to 48V DC for most systems. Check the product manual for exact ratings.
What is the isolation voltage between groups?
Group isolation is commonly rated at 1.5kV to 5kV depending on the model. This ensures safe separation between input groups and the control system.
