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General Electric IS200TBCIH2C Terminal Board Contact Input with Group Isolation
The IS200TBCIH2C is a 24-channel group-isolated dry contact input terminal board (TBCI = Terminal Board Contact Input with Group Isolation) from the GE Speedtronic Mark VI/VIe series. It is compatible with I/O processor boards such as VTCC/VCRC, supports single-mode (simplex) and triple redundancy (TMR) systems, and features 24 dry contacts divided into two isolated groups with 4ms hardware filtering and surge protection. It is suitable for high-reliability discrete signal acquisition scenarios in turbines, power plants, and petrochemical plants.
Core Hardware and Interfaces
Terminals and Connections: 24 dry contact inputs, divided into two isolated fence-type terminal blocks; 3 DC-37 pin connectors (JR1/JS1/JT1, compatible with TMR R/S/T channels); 1 3-position power female connector; independent TVS surge suppression and 4ms hardware filtering for each channel, protection against contact bounce and EMI.
Input and Protection: External excitation 24 VDC (16–32 VDC), each group with an independent common terminal; current limiting of 2.5 mA for the first 21 channels, and 10 mA for channels 22–24; threshold voltage is 50% of the excitation voltage; PTC resettable fuse + TVS, protecting against overvoltage/reverse connection/surge.
Installation and Protection: Standard DIN rail mounting (metal bracket + insulating pad); PCB conformal coating, resistant to moisture/dust/chemical corrosion; metal casing, natural heat dissipation, fanless; built-in ID identification, modules can automatically identify the model.
Compatible Systems: Mark VI/VIe; compatible with VTCC/VCRC I/O processor boards; supports single-mode (single connector) and TMR (three connector) deployments.
Email: xmxblynn@163.com
Phone: +86 18059884797
Parameters Values
Model IS200TBCIH2C (TBCI 24-channel group-isolated contact input terminal block)
Compatible Systems Mark VI / Mark VIe
Number of Inputs 24 dry contact inputs, isolated in 2 groups
Excitation Voltage 24 VDC (wide range 16–32 VDC)
Hardware Filtering 4 ms/channel
Power Consumption 20.6 W
Operating Temperature -40°C to +70°C; Storage -40°C to +85°C
Certifications Class 1 Div 2, ATEX, CE, UL; G3 compliant
Mounting Method Standard DIN rail, metal bracket + insulating pad
Protection Linear current limiting per line + TVS + PTC; group isolation, preventing inter-group crosstalk
Safety and Redundancy Features
Group Isolation: 24 channels divided into two independent common terminals, reducing the risk of fault propagation, adapting to different voltages or redundant zone signals.
TMR Compatibility: Three 37-pin connectors correspond to the TMR's R/S/T channels, meeting the SIL 3 redundancy requirements for turbine control.
Diagnostic Capabilities: Supports excitation loss and input non-response diagnostics; LEDs indicate power supply, link, and input status, which can be read via ControlST software.
Hazardous Area Certification: Class 1 Div 2/ATEX certified, suitable for use in hazardous area control cabinets, compatible with SIS auxiliary system signal acquisition.
Email: xmxblynn@163.com
Phone: +86 18059884797
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