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GE IS215ISBBH2A
Product Name: GE IS215ISBBH2A Mark V Speedtronic Analog I/O Board (TCQA) / Current Source Input Block
Product Introduction: The IS215ISBBH2A is a specialized analog input/output board belonging to GE’s Speedtronic Mark V gas turbine control system. It serves as the TCQA (Terminal Board for Current source, Quadrature, and Analog) interface, responsible for scaling, conditioning, and processing a wide range of analog signals collected from the I/O cores R1, R2, and R3 in a Mark V turbine control cabinet. The board functions as a “signal translator,” converting raw field signals into digital values usable by the controller.
Detailed content
Technical Specifications:
- Product Type: Analog I/O Board (TCQA)
- System Compatibility: GE Speedtronic Mark V
- Inputs: Six 4–20 mA current source input circuits, each providing a 24 V current loop power supply; isolated channels; dedicated Bus Switching Module (BSM) control output (version IC66BSMO21 only)
- Signal Types Processed: LVDT inputs, servo valve outputs, thermocouple inputs/outputs, 4–20 mA I/O, vibration inputs, pulse inputs, voltage inputs, relay driver outputs, generator and line signals
- Connectors: 2PL, 3PL, JD, JE, JG, JB interfaces to terminal boards and core
- Hardware Jumpers: J1 & J2 select mA output circuit; J5 & J6 configure mA output range (20 mA or 200 mA); J7 for RS232 card test; J8 to start oscillator
- Configuration: Requires IC66HHM501 Hand-held Monitor (version 4.5 or later); IC697 series PLC requires programming software version 3.0 or later, bus controller IC697BEM731C or later; IC600 series requires CPU rev. 105 or later, programming software rel. 4.02 or later; compatible with bus controllers IC66CCBB902 and 903; not compatible with IC66*CBB900/901
Functional Features: Software-configurable linear scaling for engineering unit conversion; independent per-channel isolation; advanced on-board diagnostics including low/high alarm reporting, over-range and under-range detection, open-wire detection, and internal fault reporting; no user calibration required for operation.
Working Principle: Field analog signals enter through terminal boards, are conditioned and scaled on the IS215ISBBH2A, then transmitted via 3PL to STCA board and via JE to TCQC board for further distribution over COREBUS. The board’s BSM circuitry is electrically common to Input 1 but isolated from other inputs.
Application Scenarios: Gas turbine control systems in power generation, compressor stall detection, fuel flow pressure monitoring, servo valve positioning, LVDT feedback processing, and vibration monitoring in heavy-duty turbine installations.
Installation & Precautions: Install in the designated Mark V I/O core slot; ensure all connector pins (2PL, 3PL, JE, etc.) are straight and free of oxidation; verify firmware and software compatibility with the host system; perform configuration via the hand-held monitor; periodic inspection of jumper settings and connector integrity is recommended.
