The GE DS3815PIOA1C1A is a Digital Input/Output (DI/DO) Module belonging to the General Electric (GE) Mark V Series. It is specifically designed for control and protection systems of large rotating machinery such as gas turbines and steam turbines. This module provides a high-density digital signal interface, used to collect on-site discrete signals (e.g., limit switches, relay contacts) and drive actuators (e.g., solenoid valves, alarm lights). It serves as a critical component for the Mark V system to implement logical control.

• High-Reliability Signal Processing: Features industrial-grade isolation design with strong electromagnetic interference (EMI) resistance.
• Fast Response: Offers ≤1ms input/output response time, meeting high-speed control requirements such as emergency shutdowns.
• Modular Maintenance: Supports hot-swapping (when permitted by the system), minimizing downtime.

• Product Model: DS3815PIOA1C1A
• Manufacturer: General Electric (GE)
• Product Type: Digital Input/Output Module
• Compatible System: GE Mark V Turbine Control Platform
• Number of Input Channels: 16 channels (24V DC dry contacts/wet contacts)
• Number of Output Channels: 16 channels (transistor output, 24V DC/0.5A)
• Input Signal Type: Discrete signals (passive contacts/active 24V DC)
• Output Signal Type: 24V DC transistor (sourcing/sinking selectable)
• Isolation Voltage: 500V AC (between channels and between channels and system)
• Response Time: ≤1ms (adjustable input filtering)
• Operating Temperature Range: 0°C to +60°C (32°F to +140°F)
• Protection Class: IP20 (must be installed in a control cabinet)
• Installation Method: Vertically inserted into the Mark V rack, connected via the backplane
• Communication Method: Communicates with the main controller via the Mark V backplane bus

• 16-channel optocoupler-isolated inputs, supporting dry contacts (passive) and wet contacts (24V DC active) signals.
• Adjustable filter circuit (selected via jumpers) to suppress contact bounce interference.

• 16-channel MOSFET transistor outputs, with a maximum load capacity of 0.5A per channel.
• Built-in short-circuit protection and overcurrent alarm functions.

• Gold finger connector, interacting with the Mark V rack backplane to obtain power and transmit data.

• Per-channel LED to display input/output status (green = active, red = fault).

• Provides EMI shielding and mechanical protection, complying with industrial anti-vibration standards.