GE IS2I5AEPAHICH+IS210BPPBHZCAA Mark VIe Analog I/O Control Module Set
The GE IS2I5AEPAHICH analog I/O pack, paired with the IS210BPPBHZCAA terminal board, delivers a versatile and high-density analog signal processing solution for the Mark VIe control system. This module set is engineered to handle a wide variety of sensor inputs – from thermocouples and RTDs to standard voltage and current signals – making it indispensable for temperature, pressure, flow, and position monitoring in turbine, generator, and balance-of-plant applications.
Analog Input and Output Capabilities
The IS2I5AEPAHICH module typically offers 10 analog inputs and 2 analog outputs. Eight inputs are configurable for 1-5 Vdc, ±5 Vdc, ±10 Vdc, or 0-20 mA via on-board jumpers, while the remaining two inputs accept 0-20 mA or ±1 mA with burden resistors. Outputs provide 0-20 mA or 0-200 mA selectable for valve actuator control, with output load capabilities of 800Ω or 50Ω respectively. Transducers can be externally powered (differential inputs) or internally powered from the module’s +24 Vdc with current limiting per point.
Analog Inputs10 (8 configurable + 2 special)
Analog Outputs2 (0-20mA or 0-200mA)
Input Ranges±10V, ±5V, 1-5V, 0-20mA, ±1mA
IsolationGroup or point (selectable)
HART CommunicationAvailable on select channels
Terminal Board TypeS-type with removable box terminals
Thermocouple and RTD Support
The module supports grounded and ungrounded thermocouple types E, J, K, S, T, B, N, and R with per-point linearization. Each I/O pack contains an internal cold junction reference, and when two packs are used, they average their readings for improved accuracy. Remote cold junction compensation is also supported. Thermocouple wiring can extend up to 300 meters (984 feet) with a maximum loop resistance of 450Ω.
For RTD inputs, the module provides a 10 mA multiplexed excitation current to each 3-wire RTD, compatible with 100Ω and 200Ω platinum, 10Ω copper, and 120Ω nickel elements. Software linearization includes scaling for MINCO-CA or CU10 standards. RTDs can be located up to 300 meters from the I/O module with a maximum two-way cable resistance of 15Ω.
High Accuracy and Diagnostics: Each I/O pack includes a local temperature sensor accurate to ±2°C, providing continuous temperature monitoring. Excessive temperature triggers diagnostic alarms, and the logic is available in the database for control actions.
IS210BPPBHZCAA Terminal Board
The IS210BPPBHZCAA is a compact S-type terminal board designed for simplex, dual, or dedicated triple modular redundant (TMR) configurations. It accepts box-type or barrier-type removable terminal blocks, supporting 2.0 mm² (#14 AWG) wires with 300 V insulation. Screw spacing is 5.08 mm (0.2 inch) center-to-center, and shield strips are provided for functional grounding. The board can be DIN-rail or surface mounted, and it allows I/O pack replacement without disturbing field wiring – a critical feature for online maintenance.
Communication and Integration
The IS2I5AEPAHICH pack communicates over the IONet using dual 100 Mbps Ethernet ports, enabling redundant network connections. It supports the IEEE 1588 Precision Time Protocol for time-synchronized data acquisition. The module can be configured for simplex, dual, or triple redundancy (using multiple packs) to meet criticality requirements. Optional HART communication is available for smart field devices, enabling digital data exchange over the analog current loop.
Integration with the ControlST software suite allows seamless configuration via ToolboxST. The system editor can map analog points to graphics, set scaling, and define alarm limits. Trender tools capture real-time and historical trends, with FFT analysis for frequency-domain diagnostics.
Cybersecurity and Environmental Compliance
Like all Mark VIe components, this module set incorporates cyber-hardened features, including secure boot and code authentication. It complies with EN 61010-1, UL 61010-1, and EMC directives. The operating temperature range is -30°C to +65°C, with storage from -40°C to +85°C. Hazardous location approvals (Class I, Division 2) are available for specific applications.
Typical Applications
Gas turbine exhaust temperature monitoring (thermocouples)
Steam turbine bearing temperature (RTDs)
Generator stator winding temperature
Pressure and flow transmitters in boiler feedwater systems
Position feedback for valve actuators (4-20 mA)
Vibration monitoring (with accelerometer or proximity probes)
Conclusion
The GE IS2I5AEPAHICH + IS210BPPBHZCAA Mark VIe analog I/O set offers exceptional signal conditioning flexibility, reliability, and diagnostic intelligence. Its support for multiple sensor types, redundant architecture, and seamless integration with the broader Mark VIe ecosystem makes it a preferred choice for plant operators seeking precise process measurement with minimal downtime.