PCH1026 - Process Control Hybrid Input/Output Board for GE Mark Series Systems

PCH1026 – Process Control Hybrid Input/Output Board for GE Mark Series Systems

In stock

Product Introduction:
The PCH1026 is a hybrid analog and digital I/O board designed for GE Mark V turbine control systems. The “PCH” stands for Process Control Hybrid, and “1026” is the model number. This board combines high-precision analog input channels (for temperature, pressure, flow, and level measurements) with discrete digital input and output channels (for status monitoring and equipment control) on a single card. The hybrid design reduces the total number of boards required in a control rack, saving space, reducing cost, and simplifying wiring. It was a staple board in process control applications within power plants and industrial facilities.

Technical Specifications:
Board Type: Process Control Hybrid (PCH1026)
Analog Inputs: 8 channels, 12-bit or 16-bit resolution
Analog Input Ranges: 4-20mA, 0-10V, ±10V, RTD (Pt100, Pt1000), Thermocouple (J, K, T, E, N, R, S, B)
Analog Outputs: 4 channels, 12-bit resolution, 4-20mA or 0-10V
Digital Inputs: 16 channels, dry contact or 24V DC, opto-isolated
Digital Outputs: 8 channels, relay or transistor, opto-isolated
Scan Rate: 100ms per analog channel; 10ms per digital channel
Isolation: 1500V RMS channel-to-ground isolation
Accuracy: +/- 0.1% of full scale (analog)
Power: +5V (500 mA) from VMEbackplane
Form Factor: VMEbus Eurocard (6U height)

Functional Features:
Multi-Sensor Support: Accepts thermocouples, RTDs, millivolt signals, and current/voltage signals without external signal conditioners.
On-Board Cold Junction Compensation: Built-in CJC for thermocouple inputs eliminates the need for external CJC modules.
Burnout Detection: Automatically detects open thermocouple or RTD wires and alarms the operator.
Watchdog Timer: Hardware watchdog resets the board if communication with the CPU is lost, ensuring safe output state.
LED Diagnostics: Per-channel LEDs show signal presence and board health at a glance.
Software Configurable: All channels are configurable via software for input type, range, and filtering.