IS230TBAIH2C - Analog I/O Terminal Board

IS230TBAIH2C - Analog I/O Terminal Board IS230TBAIH2C - Analog I/O Terminal Board

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Part Number: IS230TBAIH2C
Manufacturer: General Electric
Series: Mark VI
Product Type: Analog I/O Terminal Board
Number of channels: 12
Input Span: 1-5 V dc
Outputs: 24 V outputs
Maximum Lead Resistance: 15Ω
Output load: 500 Ω
Analog output current: 0-20 mA
Operating temperature: -30 to 65 °C
Size: 10.16 cm wide x 33.02 cm
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH-6421 M


IS230TBAIH2C is an Analog I/O Terminal Board manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Gas Turbine Control Systems. The 10 analog inputs and 2 analog outputs of the Analog Input/Output (TBAI) terminal board are supported. Two-wire, three-wire, four-wire, or transmitters with external power can all be connected to the 10 analog inputs. The 0-20 mA or 0-200 mA current settings for the analog outputs are available. To guard against surge and high-frequency noise, inputs, and outputs incorporate noise suppression circuitry. For connecting to the I/O processors, TBAI has three DC-37 pin connectors built within the device. Using a single connector, simplex applications are supported (JR1). All three connectors are capable of supporting TMR applications.

The input signals for the R, S, and T controls are fanned to the three connections in TMR applications. TMR outputs combine the three connected output drivers' currents and calculate the combined current using a measuring shunt. The total current signal is then presented by TBAI to the I/O processors for regulation to the specified setpoint.

MARK VI SYSTEMS: TBAI supports simplex and TMR applications in the Mark* VI system and collaborates with the VAIC processor. The VAIC can be linked to one or two TBAIs. TBAI is connected to three VAIC boards in TMR systems.


Directly attach two I/O terminal blocks mounted on the terminal board with the input and output wires. Each block has 24 terminals that may accommodate wires up to #12 AWG and are secured with two screws. Each terminal block has a shield terminal attachment point right next to it. TBAI can accommodate the following analog I/O types:

  • Analog input, two-wire transmitter
  • Analog input, three-wire transmitter
  • Analog input, four-wire transmitter
  • Analog input, externally powered transmitter
  • Analog input, voltage ±5 V, ±10 V dc
  • Analog output, 0-20 mA
  • Analog output, 0-200 mA


All of the transducers have a 24 V dc power source provided by TBAI. Jumpers (J#A and J#B) can be used to configure the inputs as current or voltage inputs. One of the two analog output circuits can be configured to be 4-20 mA or 0-200 mA, while the other can be programmed to be either. Each 24 V dc power output is capable of constantly delivering 21 mA and is safeguarded from the operation into a short circuit. Transmitters and transducers can be separately powered or can be powered by the 24 V dc source in the control system. The current output type is chosen by jumper JO. Diagnostics keep an eye on each output, and if a fault cannot be fixed by a CPU command, a suicide relay in the I/O controller disconnects the relevant output.


The terminal board is configured by jumpers. For the location of these jumpers, refer to the installation diagram. The jumper choices are as follows:

  • Current input or voltage input can be chosen using the jumpers J1A through J8A.
  • Whether the return is linked to common or left open is determined by jumpers J1B through J8B.
  • Input current is chosen between 1 mA and 20 mA using the jumpers J9A and J10A.
  • Whether the return is linked to common or left open is determined by jumpers J9B and J10B.
  • Output 1 is adjusted to 20 mA or 200 mA by jumper J0.

WOC has the largest stock of GE Speedtronic Gas Turbine Control System Replacement Parts. We can also repair your faulty boards. WORLD OF CONTROLS can also supply unused and rebuilt 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 get in touch with our team by phone or email.


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Please Contact World of Controls FZE for sales at +1 609 385 1231 or Request a Quote.

How are boards packaged for shipment from WOC?

Parts are placed in antistatic packets and securely packed in ESD boxes cushioned with ESD Foam designed to safeguard electrical components.

What are the services offered by World of Controls FZE?

WOC supplies industrial automation, pneumatic, motion, electronic, hydraulic, HVAC, and electrical control equipment, For plant floor and facilities maintenance machinery. All industrial electronic and electrical equipment is also repaired by the company.