GE IS215WEPAH2BA Mark VI I/O Pack Processor Board
Overview
IS215WEPAH2BA is the GE Mark VI turbine control system I/O Pack processor board, serving as the core processing unit inside the I/O Pack chassis. It is responsible for local I/O channel data acquisition, signal preprocessing and data packaging. It communicates bidirectionally with the Mark VI main controller via the backplane high-speed bus and issues control commands to field actuators. Meanwhile, it continuously performs on-board hardware self-test, link diagnosis and signal abnormality alarm. This product is widely used in speed regulation and protection control of gas turbines, steam turbines and large compressors, applicable to harsh industrial sites with dust and vibration in power plants, oil & gas, chemical industries.

Product Specifications
| Model | IS215WEPAH2BA |
| Product Series | Mark VI |
| Product Type | I/O Pack Processor Board |
| Core Functions | I/O signal acquisition & preprocessing, data packaging & forwarding, local fault diagnosis, backplane communication management |
| System Bus | Mark VI I/O Pack backplane high-speed communication bus |
| Diagnostic Capability | On-board hardware self-check, communication link fault detection, channel signal abnormality reporting |
| Mounting Method | Slot mounting in I/O Pack chassis |
| Operating Temperature | 0°C ~ 60°C |
| Storage Temperature | -40°C ~ 85°C |
| Relative Humidity | 5%~95%, non-condensing |
| Board Coating | Conformal coating, resistant to industrial dust and mild corrosive gas |
| ESD Protection | ESD protection must be implemented during disassembly and maintenance |
| Power Supply | Powered uniformly by I/O Pack chassis backplane |
Application Fields
- Thermal Power Plants: Speed regulation and protection control of steam turbine generator sets and combined-cycle gas turbine units
- Oil & Gas Industry: Power unit control for oil & gas production, long-distance pipeline compressors and refineries
- Petrochemical Industry: Monitoring and protection of process turbines and drive compressors in chemical plants
- Industrial Power Station: Control system for gas turbines in captive power plants and distributed energy stations
- Papermaking / Metallurgy: Unit protection and signal acquisition for large steam turbine driven equipment

Related Matching Products
I/O Pack Chassis Base
IS200WPACG1A: Mark VI I/O Pack chassis base, which provides slots, backplane links and power support for IS215WEPAH2BA. These two parts must be used together.
Matching I/O Sub-boards in the Same Chassis
- IS200ERIOH1A: Relay Output Board
- IS200STCIH2A: Thermocouple / Analog Input Board
- IS200TDILH1A: Digital Input Board
- IS200DAOAH1A: Analog Output Board
- IS200TBAIH1A: Analog Input Terminal Board
- IS200TPROH1A: Terminal Expansion Board
Mark VI Main Controller (Upper Layer Core of System)
- IS215UCVEM06A
- IS215UCVEM08A
- IS215UCVEH2A
I/O Pack Chassis Power Board
IS200PSARG1A: Supplies power input for all hardware of the I/O Pack chassis.

Notes
- Hot plugging of this processor board is strictly prohibited. Live operation will cause I/O channel interruption and trigger unit protection action. The unit must be shut down and safely isolated before disassembly.
- ESD wrist strap must be worn when handling the board. Static electricity may damage on-board chips and cause irreversible hardware failure.
- Back up the full system configuration and program files before spare part replacement, and verify hardware version and firmware version.
- Keep the cabinet interior clean, control temperature and humidity, and avoid long-term erosion of the board conformal coating by dust and corrosive gas.
- For troubleshooting, check chassis power supply and backplane connection status first before judging board failure.

FAQ
Q: What is the relationship between IS215WEPAH2BA and IS200WPACG1A?
A: IS200WPACG1A is the I/O Pack chassis base. IS215WEPAH2BA is inserted into the chassis slot for operation. The chassis provides backplane communication and power supply. The combination of both can form a complete I/O subsystem.
Q: Can IS215WEPAH2BA be connected to Mark VIe system?
A: It is incompatible. IS215WEPAH2BA belongs to Mark VI hardware system. Its hardware architecture and underlying communication protocol are completely different from Mark VIe, so it cannot be connected to Mark VIe controller.
Q: What is the maximum number of I/O sub-boards that can be equipped in one chassis with IS215WEPAH2BA?
A: The maximum quantity depends on the slot quantity of IS200WPACG1A chassis and control system configuration. Data collection and forwarding of all I/O sub-boards inside the chassis are handled by this processor board.
Q: Can I/O Pack processor boards of the same series be directly interchanged?
A: Direct online interchange is not supported if hardware version or firmware version is inconsistent for boards with same model. Verify firmware version and system configuration before replacement, back up program after shutdown to prevent communication interruption or false unit protection action.
Q: If IS215WEPAH2BA fails, will all I/O channels in the chassis be affected?
A: Yes. This board is the signal processing center of the whole I/O Pack. Once it fails, signals of all I/O boards in the chassis cannot be uploaded to the main controller, and all measurement points and output channels of this I/O group will fail.
Q: Can the matching I/O boards in the chassis be mixed freely?
A: Within the support scope of Mark VI system configuration, digital input, analog input, relay output and other boards can be mixed and configured in one I/O Pack chassis. Corresponding configuration needs to be completed in control software.
Q: Besides IS215WEPAH2BA, what other supporting information needs to be confirmed for spare part procurement?
A: It is necessary to confirm I/O chassis model, main controller model, firmware version, existing I/O board list and project configuration file to ensure mutual compatibility of all hardware.
Q: What is the difference between IS215WEPAH2BA and IS215WEPAH1A?
A: There are differences in hardware layout and firmware version. Direct replacement is not recommended. If replacement is required, refer to GE product change documents, evaluate backplane compatibility and system configuration, and perform shutdown test.
Document Tags: GE IS215WEPAH2BA, Mark VI, I/O Pack Processor Board, GE Mark VI turbine control system, IS215WEPAH2BA board, GE turbine spare parts, Mark VI I/O module, gas turbine control system spare parts









