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GENERAL ELECTRIC / MARK VI / ANALOG I/O
TBAI ANALOG I/O TERMINATION BOARD
IS200TBAIH1CDC
Barrier-type analog I/O termination board for the GE Mark VI turbine control architecture, supporting ten analog inputs and two analog outputs.
Designed to interface field analog signals with the VAIC analog input/output processor in Simplex and TMR arrangements.
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CORE CONFIGURATION
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01 / FIELD SIDE
Analog Transmitters
The TBAI terminal board accommodates analog field signals from two-wire, three-wire, four-wire and externally powered transmitters. The input structure provides the termination point between field wiring and the Mark VI analog I/O processing path.
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02 / PROCESSOR SIDE
VAIC Interface Through Three DC-37 Connections
The TBAI provides three DC-37 connectors for connection to the I/O processor layer. In a Simplex arrangement, one connector is used. In a TMR arrangement, the three connectors support the R, S and T control paths.
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03 / ANALOG INPUT
10
ANALOG INPUTS
Eight inputs support 4–20 mA or ±5/10 VDC signals, while two additional inputs support 4–20 mA or ±1 mA signal configurations.
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04 / ANALOG OUTPUT
Two Analog Output Paths
The two analog outputs provide different output capability. One output is specified for 4–20 mA with a 500-ohm load. The second output supports 4–20 mA with a 500-ohm load or 0–200 mA with a 50-ohm load.
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| Parameter | Specification |
| Functional acronym | TBAI |
| System family | GE SPEEDTRONIC Mark VI |
| Board type | Barrier-type analog I/O termination board |
| Analog inputs | 10 AI |
| Analog outputs | 2 AO |
| Input channels 1–8 | 4–20 mA, 250 ohms, or ±5 / ±10 VDC |
| Input channels 9–10 | 4–20 mA, 250 ohms, or ±1 mA, 500 ohms |
| Transmitter power | Current-limited +24 VDC provided per input |
| Current-limited sources | Two +24 V, 0.2 A current-limited power sources |
| Analog output 1 | 4–20 mA, 500-ohm load |
| Analog output 2 | 4–20 mA / 500 ohms or 0–200 mA / 50 ohms |
| I/O processor | VAIC analog input/output board |
| Processor connection | Three DC-37 connectors |
| Simplex connection | Single processor connection using JR1 |
| TMR connection | Three processor connections for R, S and T controls |
| Input transmitter types | Two-wire, three-wire, four-wire and externally powered transmitters |
| Signal protection | Noise suppression circuitry for analog inputs and outputs |
| Primary application | Industrial turbine control analog I/O termination |
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SIGNAL ROUTING
From Field Transmitter to Control Processor
The TBAI sits at the termination layer of the Mark VI analog I/O architecture. Field transmitter wiring reaches the terminal board first, while the processor-side connections route the conditioned analog signals toward the VAIC boards.
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FIELD INSTRUMENT
2-Wire / 3-Wire / 4-Wire / External-Power Transmitter
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TERMINATION LAYER
IS200TBAIH1CDC / TBAI
10 AI + 2 AO · Barrier type · Signal termination and routing
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PROCESSOR LAYER
VAIC Analog Input / Output Processor
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R CONTROL
JR1
The first processor path receives the corresponding fanned analog input signals.
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S CONTROL
JS1
The second processor path provides the corresponding redundant analog processing route.
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T CONTROL
JT1
The third processor path completes the TMR signal architecture.
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OUTPUT
COMBINED
TMR output currents are combined and measured for control regulation.
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TBAI
Barrier-type analog I/O termination architecture with 10 analog inputs and 2 analog outputs. This is the functional family represented by IS200TBAIH1CDC.
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TBAO
Barrier-type analog output termination board for the Mark VI architecture, providing a larger dedicated analog-output capacity than the TBAI.
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DTAI
Box-type analog input termination architecture with 10 analog inputs and 2 analog outputs, intended for the applicable Simplex Mark VI arrangement.
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DTAO
Box-type analog output termination architecture with eight 4–20 mA outputs, representing another Mark VI analog termination configuration.
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REPLACEMENT FOCUS
IS200TBAIH1CDC
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For a replacement, matching the complete part number is important because the TBAI family contains multiple hardware variants. The intended application should also be checked against the installed Mark VI architecture, VAIC processor arrangement, Simplex or TMR configuration, field transmitter type and required analog output range.
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SALES MANAGER
Miya Zheng
Email: sales@amikon.cn
Phone / WhatsApp: +86 180 2077 6792
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REQUEST DETAILS
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| 01 |
Can IS200TBAIH1CDC replace another TBAI board when the Mark VI system is configured for TMR?
IS200TBAIH1CDC belongs to the TBAI analog I/O termination architecture used with VAIC processors in Mark VI Simplex and TMR applications. In a TMR arrangement, the TBAI provides three processor-side connections so the analog input signals can be fanned to the R, S and T control paths. A replacement should therefore match the complete part number and the existing TMR hardware arrangement rather than relying only on the TBAI family designation.
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| 02 |
What should be checked before ordering IS200TBAIH1CDC for an existing VAIC installation?
The complete part number, Mark VI architecture, Simplex or TMR arrangement, VAIC processor relationship, field transmitter type and required analog signal ranges should be checked. The TBAI supports ten analog inputs and two analog outputs, but the individual input and output characteristics are not identical across every channel.
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| 03 |
Can IS200TBAIH1CDC handle both current and voltage transmitter signals?
Yes, the TBAI input architecture supports multiple analog signal formats. Eight inputs are specified for 4–20 mA with a 250-ohm input or ±5/±10 VDC, while two inputs support 4–20 mA with a 250-ohm input or ±1 mA with a 500-ohm input. The actual field device wiring should therefore be matched to the appropriate channel characteristics.
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| 04 |
Why is IS200TBAIH1CDC different from a TBAO when replacing an analog termination board?
The TBAI is a mixed analog I/O termination architecture with ten analog inputs and two analog outputs. TBAO is a dedicated analog-output termination architecture with sixteen 4–20 mA outputs. Therefore, the two boards serve different I/O allocation requirements and should not be substituted solely because both belong to the Mark VI analog termination family.
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| 05 |
When does IS200TBAIH1CDC make more sense than a DTAI configuration?
The TBAI and DTAI both provide ten analog inputs and two analog outputs, but they represent different termination-board forms. TBAI is the barrier-type architecture, while DTAI is the box-type architecture used for applicable Simplex arrangements. If an existing cabinet uses the TBAI barrier arrangement, matching the installed TBAI part number is the appropriate replacement path rather than changing termination architecture without checking the system design.
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DELIVERY
3–5 Days
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WARRANTY
12 Months
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PACKAGING
Brand New
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DELIVERY WAY
DHL / UPS / FedEx / EMS / TNT
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PAYMENT
T/T
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Returns & Replacement
7-day post-receipt support window
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Please contact us within 7 days if you have any question after you receiving the items. The returned items has to be in its original condition, specific reason for the return, we will issue a return or replacement for your order after we received the returns. The buyer is responsible for all the shipping cost incurred.
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