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TECHNICAL SPECIFICATIONS:
Part Number: IS230SPROH2A
Manufacturer: General Electric (GE)
Series: Mark VIe
Functional Acronym: SPRO
Product Type: Simplex Emergency Protection Terminal Assembly Board
Turbine Protection Level: Backup Emergency Protection
Connector Interfaces: 1 x JA1 (I/O Pack Connector), 1 x JA3 (DC-37 Pin Backup Trip Connector)
Supported I/O Pack Matrix: Natively hosts 1 x PPROH1A or YPROS1A module
Integrated Potential Transformers (PTs): 2 onboard red transformers (T1 and T2)
Voltage Input Channels: 2 (Bus and Generator tracking)
Magnetic Speed Pickup Channels: 3 passive speed input circuits (Terminals 19-24)
Terminal Block Layout: 24 pluggable Euro-style box terminals
Circuit Component Framework: 12 small blue rectangular resistors, 6 black rectangular capacitors
Form Factor / Mounting: DIN-rail Mount Carrier / Panel Assembly
Circuit Board Protection: High-grade Conformal PCB Coating
Ambient Operating Temperature: -30°C to +65°C, -22°F to +149°F
Board Dimensions: 15.9 cm H x 17.8 cm W (6.25 in. x 7.0 in)
Repair Lead Time: 3–5 Business Days
Availability: In Stock
Country of Origin: United States
Manual Reference: GEH-6153
The IS230SPROH2A is a Simplex Emergency Protection Terminal Board Assembly designed and manufactured by General Electric for the high-performance Speedtronic Mark VIe Distributed Gas and Steam Turbine Control System platform. The Emergency Protection (SPRO) terminal board hosts a PPRO I/O pack. It conditions speed signal inputs for the I/O pack and contains a pair of potential transformers (PTs) for bus and generator voltage input. It has a DC-37 pin connector adjacent to the PPRO I/O pack connector that accepts a cable leading to a backup trip relay terminal board. Operating as a critical, hardwired component of the system's independent safety framework, the SPRO assembly houses a single PPRO or YPRO protection I/O pack. Together, they establish a dedicated, redundant fallback network known as the Backup Emergency Protection layer. This subsystem continuously scales, monitors, and evaluates essential turbine operational parameters independent of the primary control processors, executing a failsafe trip command if critical operational thresholds are breached.
TELEMETRY INTEGRATION AND VOLTAGE TRACKING
The circuit topology of the SPRO card is specifically engineered to handle raw, low-level analog inputs from field sensors. The board features a pair of onboard potential transformers (PTs), labeled T1 and T2, dedicated to conditioning and isolating the incoming bus and generator voltage signals. Concurrently, the module accepts and filters three separate passive magnetic speed-pickup pulse inputs. These frequency signals represent the turbine shaft's real-time physical revolutions per minute (RPM). The board conditions these alternating current (AC) pulse rates—safely handling ultra-low operational sensitivity levels down to 27 mV—before converting and routing the raw data down to the plugged I/O pack for core overspeed evaluation.
COMPATIBILITY:
The Mark VIe control SPROH2A is designed for full compatibility across all system versions, making it a versatile component within GE’s turbine control architecture. It ensures stable integration with existing Mark VIe configurations without requiring major modifications, which helps reduce downtime during installation or upgrades. Its robust design supports reliable signal handling in critical control environments where precision and continuity are essential.
A key feature of the module is its 24 barrier terminals arranged within a pluggable block, allowing secure and organized field wiring. This setup simplifies maintenance and improves connection reliability in industrial environments. The SPRO interface is engineered to directly accommodate one PPROH1A module and includes a DC-37 connector, which enables cable-based connectivity to the selected backup trip relay terminal board. This configuration ensures efficient communication between control and protection systems, enhancing overall operational safety and system responsiveness.
INSTALLATION:
The SPROH2A and a plastic insulator are mounted on a sheet metal carrier, which mounts on a DIN rail. Optionally, the SPRO and insulator are mounted on a sheet metal assembly, which bolts directly to a panel. Speed signals and PT inputs are wired directly to the terminal block using typical #18 AWG wires. The SPRO1A barrier terminal block is removable for board replacement. The SPRO2A Euro-block type terminal block has terminals that can be removed for board replacement. The I/O pack mounts directly on connector JA1 of the SPRO. A DC-37 pin conductor cable plugs into connector JA3 of SPRO with the other end attached to the selected backup trip terminal board.
CIRCUIT MAPPING AND IO PATHS:
Signal distribution across the 24 termination slots follows a strict hardware matrix layout. Primary potential transformer lines converge on terminals 1 through 4, while terminals 19 through 24 are explicitly reserved to receive the three passive magnetic speed sensor paths. Terminals 7 through 15 loop directly back into the JA1 processing socket to allow future software features and signal scalability. Conversely, terminal positions 5–6 and 16–18 feature no underlying traces or internal board connections, serving as physical isolation air gaps that prevent cross-talk or unexpected transient voltage leaks from jumping across adjacent data lines.
WHY PARTNER WITH WORLD OF CONTROLS
World of Controls specializes in supplying high-quality, warranty-backed OEM replacement parts, including unused surplus and professionally rebuilt components for critical turbine control and industrial automation systems like the General Electric Mark VIe platform. To minimize customer downtime and ensure original equipment standard compliance, every component undergoes rigorous inspection, testing, and verification in an advanced electronics lab. Beyond parts distribution, the company delivers comprehensive, global support through 24/7 technical assistance, expert troubleshooting, component repair services, and rapid shipping, ensuring optimal efficiency and long-term reliability for critical industrial operations worldwide.
What is GE IS230SPROH2A?
It is a high-performance Simplex Emergency Protection Terminal Board Assembly manufactured by General Electric for the Mark VIe Series. It functions as a specialized, hardware-isolated fallback interface that integrates with a PPRO or YPRO I/O pack to deliver backup overspeed and voltage protection.
What is the primary operational difference between the SPROH1A and SPROH2A variants?
The SPROH1A variant is equipped with a fixed, heavy barrier-type terminal block layout, whereas the SPROH2A utilizes 24 pluggable Euro-style box terminals that allow quick connection and removal of field lines during field replacement.
How does the SPRO board communicate with external backup trip circuits?
The board features a dedicated DC-37 pin connector slot marked JA3 right next to the I/O pack interface. This connector takes a heavy multi-conductor cable that interfaces directly with a matching backup trip relay terminal board to drop out system solenoids.
What field sensors connect directly to the Euro-block terminals?
The board terminates up to three passive magnetic speed pickups (on terminals 19–24) to track turbine shaft RPM and two separate potential transformers (PT) input streams (on terminals 1-4) for bus and generator line voltage tracking.
Does the IS230SPROH2A require complex software configuration or jumper setting adjustment?
No, the card is designed without any onboard manual hardware jumpers or software configuration settings. System logic confirmation relies entirely on electronic ID scanning components that are read by the PPRO/YPRO processor during system startup.
