Description
Product Parameters
- Model Number: IS200DTAOH1ABA (Compatible with IS210DTAOH1AA)
- Series: Mark VI Speedtronic
- Board Type: Analog Output Termination Board (DTAO)
- Channels: 8 Differential Analog Output Channels (0-20 mA)
- System Configuration: Simplex (S) Applications
- Control Interface: Connected via cable to the VAMP or VAOC processor boards
- Country of Origin: USA
- Weight: 1.45 lbs (0.66 kg)
- Dimensions: 11.0 in x 6.5 in x 1.1 in (27.9 cm x 16.5 cm x 2.8 cm) The IS200DTAOH1ABA is a dedicated termination board for the GE Mark VI control system, specifically designed to handle eight channels of simplex analog outputs. It provides the physical interface for field wiring, featuring high-quality terminal blocks and passive components that facilitate signal conditioning and surge protection. This board receives control signals from the I/O processor and distributes them to field devices such as valve positioners, actuators, and meters, ensuring precise control loop performance within the turbine’s governing system.
GE IS200DTAOH1ABA IS210DTAOH1AA
GE IS200DTAOH1ABA IS210DTAOH1AA
GE IS200DTAOH1ABA IS210DTAOH1AA
Model Comparison
The IS200DTAOH1ABA is designed for simplex control architectures, whereas the IS200DTBAH series is typically utilized for TMR (Triple Modular Redundant) systems. The related IS210DTAOH1AA represents a more modern manufacturing iteration or a “functional equivalent” often found in later Mark VIe configurations; while the IS210 maintains the same input/output logic, it may feature updated surface-mount components and improved lead-free soldering compared to the IS200 series. The “H1ABA” suffix specifically denotes the revision level and group code, where the “B” revision typically includes minor PCB layout optimizations for better signal isolation over the original “A” version.
Operation Tips
- Wiring Integrity: When connecting field devices to the terminal blocks, ensure that the 0-20mA loop is properly shielded and that the shield is grounded at the board to prevent electromagnetic interference (EMI).
- Signal Verification: Use a calibrated multimeter at the test points on the board to verify the output mA signal before finalizing the connection to a sensitive field actuator.
- Cable Seating: Ensure the multi-pin ribbon cables connecting the DTAO to the V-rack are securely latched; loose connections here can cause “I/O Communication Failure” alarms in the Toolbox software.
- Replacement Safety: This board is not hot-swappable in a simplex system; always power down the associated I/O pack or terminal rack before replacing the board to avoid damaging the output transistors or causing a turbine trip.
