IS230SHRA2ASHRA2AG01 - HART Enabled Analog Input/Output Assembly

SPECIFICATIONS:

Part Number: IS230SHRA2A (Assembly: IS230SHRA2ASHRA2AG01)
Manufacturer: General Electric
Series: Mark VIe
Product Type: HART Enabled Analog Input/Output Assembly (Dual)
Number of Channels: 12 Channels (10 Inputs, 2 Outputs)
Input Span: 1–5 V dc or 4–20 mA
Analog Outputs: 4–20 mA
A/D Converter Resolution: 16-bit
Input Scan Rate: 10 ms (High-speed task) / 40 ms (Normal task)
HART Modem: Integrated FSK (Frequency Shift Keying)
Transmitter Power: 24 V dc nominal (current limited per channel)
Input Impedance: 250 Ω (in current mode) / > 1 MΩ (in voltage mode)
Common Mode Voltage: ± 5 V (maximum)
Isolation: Galvanic isolation between the field wiring and the IONet
Connector Type: 37-pin D-type connector for PHRA/YHRA I/O Packs
Terminal Block Interface: Right-angle headers for pluggable Euro-style blocks
Operating Temperature: -30 °C to +65 °C (-22 °F to +149 °F)
Size: 15.9 cm High x 17.8 cm Wide (6.25 in x 7.0 in)
Repair: 3–7 Days
Country of Origin: USA

FUNCTIONAL DESCRIPTION:

The IS230SHRA2A (often identified by the assembly number IS230SHRA2ASHRA2AG01) is a high-performance HART-enabled analog input/Output Assembly designed by General Electric for the Mark VIe control system. This assembly functions as a specialized interface for dual-redundant or complex analog signal processing, facilitating the bridge between field-level HART (Highway Addressable Remote Transducer) devices and the control network. It supports 10 analog inputs and 2 analog outputs, allowing for bidirectional digital communication superimposed on standard 4–20 mA analog signals for advanced diagnostics and instrument configuration.

ADVANCED DATA MODULATION & COMMUNICATION:

The SHRA2A utilizes sophisticated Frequency Shift Keying (FSK) to superimpose digital HART messages onto the 4–20 mA analog loop. This dual-layer communication allows the Mark VIe system to retrieve secondary variables and device health statuses without introducing latency into the primary process control variable. By employing high-speed digital filtering, the assembly ensures that the AC signal from the HART modem does not degrade the DC accuracy of the analog input, maintaining sub-millisecond precision for turbine governor and fuel control loops.

FIELD-LEVEL WIRING & POWER ARCHITECTURE:

The assembly is engineered to simplify complex field deployments, supporting a diverse range of instrumentation topologies:

• Self-Powered Transmitters: Configurable for 4-wire transmitters where the power is sourced externally.

• Loop-Powered Interface: Provides dedicated 24 VDC excitation power for 2-wire and 3-wire transmitters, protected by integrated current-limiting circuitry to prevent board-level damage during field ground faults.

• Voltage Monitoring: Specifically designed to accommodate 1–5 VDC inputs, though HART functionality is automatically bypassed in voltage-sensing mode to preserve signal integrity.

SYSTEM IDENTIFICATION & DIAGNOSTIC LAYERS:

The IS230SHRA2A features an embedded electronic ID chip (1-Wire interface) that communicates directly with the PHRA or YHRA I/O packs. Upon system initialization, the controller queries this chip to verify the hardware revision, manufacturer code, and assembly serial number, ensuring that the software configuration matches the physical hardware. This prevents commissioning errors and allows the ControlST software to automatically map the I/O channels based on the specific Group 2 (G01) capabilities.

MODULAR INTERCONNECTIVITY:

Unlike legacy terminal boards, the SHRA2A utilizes a right-angle header system that accepts pluggable Euro-style terminal blocks. This modularity allows for the "hot-swap" capability of I/O packs while keeping field wiring stationary. The assembly is designed for high-density DIN-rail mounting and includes a D-type connector interface that provides the mechanical and electrical mating point for the I/O pack, eliminating the need for internal cabinet ribbon cables and reducing the overall footprint of the control rack.

WHY BUY FROM WOC:

WOC is a premier global supplier of GE Mark VIe components. We provide the IS230SHRA2ASHRA2AG01 assembly in both UNUSED and professionally REBUILT conditions, ensuring your control system remains operational with minimal lead times. Each assembly undergoes exhaustive functional testing to verify HART message transparency, I/O accuracy, and jumper configuration integrity. Backed by our standard warranty and 24/7 technical support, WOC is your trusted partner for critical turbine control infrastructure.

FREQUENTLY ASKED QUESTIONS:

What is the IS230SHRA2A / SHRA2AG01?

The IS230SHRA2A (Assembly G01) is a HART-enabled Analog Input/Output terminal board specifically designed for the GE Mark VIe control system. It provides the physical and electrical interface for 10 analog inputs and 2 analog outputs. By integrating HART (Highway Addressable Remote Transducer) technology, it allows the control system to perform digital asset management and remote diagnostics on field instruments while simultaneously maintaining standard 4-20 mA control signals.

What is the functional advantage of the IS230SHRA2A in a Mark VIe system?

The SHRA2A enables the Mark VIe system to communicate digitally with field instruments. This allows for remote calibration, asset management, and the monitoring of soft diagnostics like sensor drift or internal device failure, which are invisible to standard analog-only boards.

How does the board handle different signal types?

Each of the 10 input channels features physical jumpers that allow the board to be toggled between current (4-20 mA) and voltage (1-5 VDC) modes. This allows the assembly to be a universal analog solution for a wide variety of turbine sensors, from pressure transducers to valve positioners.

Can I replace an IS200SHRA1A with an IS230SHRA2A?

While functionally similar, the IS230SHRA2A uses right-angle pluggable headers instead of the fixed terminal blocks found on the 1A. While the electrical characteristics are compatible, the wiring termination style differs, making the 2A a preferred choice for modular maintenance.

Is there built-in protection for field wiring faults?

Yes, the board includes transient suppression and current limiting on the 24V transmitter power outputs. This ensures that a short circuit at the transmitter does not trip the main power supply for the entire Mark VIe rack, localizing the fault to a single channel.