The GE IS200TBAIH1CDC Analog Input/Output Terminal Board is a versatile analog interface terminal board used within GE Industrial Control Systems. As a member of the TBAI board family, the IS200TBAIH1CDC Analog Input/Output Terminal Board supports 10 analog inputs and 2 analog outputs, providing the field-side termination, signal conditioning, and redundant signal distribution functions required for analog process signals in both Mark VI and Mark VIe control architectures. The board accommodates two-wire, three-wire, four-wire, and externally powered transmitters, and supports both simplex and triple modular redundant (TMR) applications.
The IS200TBAIH1CDC Analog Input/Output Terminal Board is identified by the GE part numbering convention used throughout the Industrial Control Systems product line. The "IS200" prefix identifies the board as a GE Industrial Control Systems product, with "200" specifically indicating that the board is a base-level assembly. The "TBAI" acronym identifies the board's functional designation as an Analog Input/Output Terminal Board. The "H1" designation identifies the hardware group, while the "CDC" suffix identifies the artwork and functional revision combination. All digits are important when ordering or replacing any board, as boards of different revision levels may not contain identical hardware, and GE ensures backward compatibility of replacement boards while noting that different revision levels may not contain identical components.
The IS200TBAIH1CDC Analog Input/Output Terminal Board provides three DC-37 pin connectors for connection to the I/O processors. Simplex applications are supported using a single connector (JR1), while TMR applications are supported using all three connectors (JR1, JS1, and JT1). In TMR applications, the input signals are fanned to the three connectors for the R, S, and T controls, and the TMR outputs combine the current of the three connected output drivers, determine the total current with a measuring shunt, and present the total current signal to the I/O processors for regulation to the commanded setpoint. This architecture ensures that a fault in one control channel does not compromise the analog measurement or output, providing the high availability required for critical control applications.
This product introduction provides detailed technical information, functional descriptions, connector assignments, configuration guidance, and comprehensive specifications for the GE IS200TBAIH1CDC Analog Input/Output Terminal Board, serving as an essential reference for control system engineers, maintenance technicians, and system integrators working with GE industrial control equipment.
Functional Architecture and Signal Processing
The IS200TBAIH1CDC Analog Input/Output Terminal Board is built around a flexible and robust analog signal conditioning architecture that supports multiple transmitter types, input ranges, output ranges, and redundancy configurations. The board includes noise suppression circuitry on the inputs and outputs to protect against surge and high-frequency noise, ensuring accurate measurement and reliable control in electrically noisy industrial environments.
The 10 analog inputs of the IS200TBAIH1CDC Analog Input/Output Terminal Board accommodate two-wire, three-wire, four-wire, or externally powered transmitters. Inputs 1 through 8 support ±10 V DC, ±5 V DC, or 4–20 mA signals, while inputs 9 and 10 support 4–20 mA or ±1 mA signals, providing a dedicated low-current range for specialized transmitters. The input span for transmitters is 1–5 V DC from a 4–20 mA current input, and the maximum lead resistance is 15 ohms two-way with a cable length of up to 300 meters (984 feet), ensuring accurate measurement even with long field wiring runs. With the noise suppression and filtering, the input AC common-mode rejection is 60 dB and the DC common-mode rejection is 80 dB.
The two analog outputs of the IS200TBAIH1CDC Analog Input/Output Terminal Board can be set up for 0–20 mA or 0–200 mA current. Jumper J0 selects the type of current output, with output 1 configurable as 20 mA or 200 mA and output 2 fixed at 4–20 mA in the standard configuration. The output load capability depends on the controller pairing: 500 ohms for the 4–20 mA output with the TBAIH1B and VAICH1C, 800 ohms for the 4–20 mA output with the TBAIH1C and VAICH1D or PAIC, and 50 ohms for the 200 mA output. These load ratings ensure that the outputs can drive the connected field devices with adequate margin while maintaining accuracy.
Each 24 V DC power output of the IS200TBAIH1CDC Analog Input/Output Terminal Board is rated to deliver 21 mA continuously and is protected against operation into a short circuit. Transmitters and transducers can be powered by the 24 V DC source in the control system or can be independently powered, providing flexibility for different field instrument requirements.
Simplex and TMR Applications
The IS200TBAIH1CDC Analog Input/Output Terminal Board supports both simplex and TMR applications, allowing the same terminal board to be used across different system redundancy levels.
In simplex applications, the board uses a single connector (JR1) to connect to the I/O processor. The input signals are terminated on the board and routed through the connector to the processor, and the output signals are driven from the processor through the connector to the field devices. This configuration provides a straightforward and cost-effective analog interface for applications where redundancy is not required.
In TMR applications, the board uses all three connectors (JR1, JS1, and JT1) to connect to the three I/O controllers (VAIC or PAIC). The input signals are fanned out to the three connectors for the R, S, and T controls, allowing each controller to independently measure the field signal. The 24 V DC power to the transducers comes from all three controllers and is diode-shared on the TBAI, providing redundancy in the transmitter power supply. Each analog current output is fed by currents from all three controllers, and the actual output current is measured with a series resistor, which feeds a voltage back to each I/O controller. The resulting output is the voted middle value (median) of the three currents, ensuring that a fault in one controller does not cause an incorrect output. This TMR architecture provides the high availability and fault tolerance required for critical control applications.
In the Mark VI system, the TBAI works with the VAIC processor and supports simplex and TMR applications, with one or two TBAs connected to the VAIC and three VAIC boards cabled to the TBAI in TMR systems. In the Mark VIe system, the TBAI works with the PAIC I/O pack and supports simplex and TMR applications, with three PAICs plugging directly into the TBAI in TMR systems.
Installation and Wiring
The IS200TBAIH1CDC Analog Input/Output Terminal Board is designed for straightforward installation and field wiring. The input and output wires connect directly to two I/O terminal blocks mounted on the terminal board. Each block is held down with two screws and has 24 terminals accepting up to #12 AWG wires, providing a robust and reliable connection for field wiring. A shield terminal attachment point is located adjacent to each terminal block, ensuring proper shielding and grounding of the analog signal cables. The barrier-type terminal blocks can be unplugged from the board for maintenance, simplifying field wiring and board replacement.
The board accommodates the following analog I/O types: analog input from two-wire transmitters, three-wire transmitters, four-wire transmitters, and externally powered transmitters; analog input for voltage ±5 V DC and ±10 V DC; analog output of 0–20 mA; and analog output of 0–200 mA. The wiring connections, jumper positions, and cable connections are displayed on the TBAI wiring diagram, which should be consulted during installation to ensure correct configuration. The board size is 10.16 cm wide by 33.02 cm high (4.0 in x 13 in), and the operating temperature range is −30 to 65 °C (−22 to +149 °F).
Jumper Configuration
The IS200TBAIH1CDC Analog Input/Output Terminal Board is configured by jumpers, which allow each input and output channel to be matched to the specific field device and application requirements.
Jumpers J1A through J8A select either current input or voltage input for inputs 1 through 8. Jumpers J1B through J8B select whether the return is connected to common or is left open for inputs 1 through 8. Jumpers J9A and J10A select either 1 mA or 20 mA input current for inputs 9 and 10, and jumpers J9B and J10B select whether the return is connected to common or is left open for these two channels. Jumper J0 sets output 1 to either 20 mA or 200 mA.
The jumper settings must be verified against the wiring diagram and the specific field transmitter requirements before the board is placed in service. Incorrect jumper settings can result in inaccurate readings, out-of-range signals, or damage to the connected equipment.
Diagnostics and Fault Detection
The IS200TBAIH1CDC Analog Input/Output Terminal Board provides comprehensive diagnostic capabilities that assist with system verification and fault isolation. The board provides the voltage drop across a series resistor to indicate the output current, allowing the I/O processor to monitor the output current and detect unhealthy conditions. The I/O processor creates a diagnostic alarm (fault) if any one of the two outputs goes unhealthy.
Each cable connector on the terminal board has its own ID device that is interrogated by the I/O controller. The ID device is a read-only chip coded with the terminal board serial number, board type, revision number, and the JR, JS, or JT connector location. When this chip is read by the I/O controller and a mismatch is encountered, a hardware incompatibility fault is created, preventing the system from operating with incorrect or mismatched hardware. This diagnostic feature ensures that the correct terminal board is installed in each location and that the system configuration matches the physical hardware.
Diagnostics monitor each output, and a suicide relay in the I/O controller disconnects the corresponding output if a fault cannot be cleared by a command from the processor, providing an additional layer of protection for the field devices and the process.
Application Suitability and System Integration
The IS200TBAIH1CDC Analog Input/Output Terminal Board is a versatile analog interface that can be used in a wide variety of GE Industrial Control System applications. Its 10 analog inputs, supporting two-wire, three-wire, four-wire, and externally powered transmitters across voltage and current ranges, allow the board to interface with pressure transmitters, temperature transmitters, flow meters, level sensors, and many other analog field instruments. Its two analog outputs provide 0–20 mA or 0–200 mA current signals for valve positioners, actuators, recorders, and other analog loads.
The board's support for both simplex and TMR applications makes it suitable for a wide range of system architectures, from cost-sensitive simplex installations to critical TMR installations where high availability is required. In TMR applications, the board's fanned inputs, diode-shared transmitter power, and median-voted outputs provide the fault tolerance and reliability required for the most demanding control applications.
In Mark VI systems, the IS200TBAIH1CDC Analog Input/Output Terminal Board works with the VAIC processor, with one or two TBAs connected to the VAIC in simplex applications and three VAIC boards cabled to the TBAI in TMR applications. In Mark VIe systems, the board works with the PAIC I/O pack, with three PAICs plugging directly into the TBAI in TMR applications. This compatibility with both Mark VI and Mark VIe architectures allows the board to be used across a wide range of GE control system installations.
Maintenance and Lifecycle
The IS200TBAIH1CDC Analog Input/Output Terminal Board is designed for long service life with minimal maintenance. The board contains no moving parts, and its robust construction ensures high reliability in continuous industrial operation. Routine maintenance consists of periodic visual inspection of the board, terminal blocks, and wiring, verification that the jumpers are set correctly for each channel, and confirmation that the shield terminals are properly connected.
The board's diagnostic features, including the output current monitoring, the onboard ID chip, and the suicide relay, simplify troubleshooting and ensure that the correct board is installed in each location. If an output becomes unhealthy, the I/O processor generates a diagnostic alarm, and the suicide relay disconnects the output if the fault cannot be cleared, protecting the field devices and the process.
If the board requires replacement, the process is straightforward. After de-energizing the associated equipment and verifying that no power exists, the pluggable terminal blocks should be labeled and removed, and the board should be removed from its mounting. The replacement board should be installed in the same position, the jumpers set to match the original configuration, and the terminal blocks reconnected as labeled before returning the system to service.
GE Industrial Control Systems ensures compatibility of its replacement boards, even though boards of different revision levels may not contain identical hardware. When ordering a replacement IS200TBAIH1CDC Analog Input/Output Terminal Board, provide the complete part number and description, the drive or system serial number, and the Material List (ML) number. The factory may substitute later versions based on availability and design enhancements, but backward compatibility of replacement boards is guaranteed.
Conclusion
The GE IS200TBAIH1CDC Analog Input/Output Terminal Board is a reliable, robust, and versatile analog interface for GE Industrial Control Systems. Its 10 analog inputs, supporting multiple transmitter types and voltage and current ranges, its two analog outputs with 0–20 mA or 0–200 mA capability, its support for both simplex and TMR applications, and its comprehensive jumper configuration, diagnostics, and fault detection features provide the flexibility and reliability required for a wide range of industrial analog measurement and control applications.
With its unpluggable terminal blocks, clearly marked jumper assignments, comprehensive diagnostics, and compatibility with both Mark VI and Mark VIe architectures, the IS200TBAIH1CDC Analog Input/Output Terminal Board is designed for easy installation, verification, and maintenance. Backed by GE's quality manufacturing, global support network, and commitment to backward compatibility, the IS200TBAIH1CDC Analog Input/Output Terminal Board continues to deliver the performance, durability, and reliability that industrial users expect from GE. Whether used in a new installation or as a replacement for an existing board, the IS200TBAIH1CDC Analog Input/Output Terminal Board provides the analog input and output functionality required for reliable and efficient control system operation.
