KONGSBERG RAIT400 601771 REMOTE CONTROLLER UNIT

KONGSBERG RAIT400 (Part Number 601771) Remote Controller Unit
I. Basic Identity and Ownership System
Full Model: RAIT400 Remote Controller Unit
Original Factory Part Number: 601771, Mainstream Hardware Version Rev.C1, Core CPLD Chip P2080_12
Platform Ownership: Conventional RIO400 Distributed Remote I/O Control System, equipped with K-Chief 600 Bridge Monitoring System, K-Pos DP Dynamic Positioning, AutoChief Host Remote Control, and a complete set of maritime process control system for offshore platforms
Location: Local Small Logic Controller within the RIO400 System, distinct from the large RCU501 Master Controller; responsible for local small area logic operations, signal preprocessing, and aggregation forwarding of multiple I/O modules, serving as the on-site computing node of the SPBus bus

Core Hardware Architecture
Processor Core
Embedded PowerPC Architecture Processing Chip, Firmware固化 RAIT400 Special Programs， Supports On-site Logic Programming， Signal Filtering， Alarm Threshold Judgment， Safety Interlock Operations
Bus Communication (Dual Redundant SPBus)
Dual Isolated SPBus (Serial Process Bus) RS485 Manchester Bus， Rate 2Mbps， Dual Bus Hot Standby Fault Tolerance
As the main backbone of the RIO400 Network， it is connected downward with RAIC400 (Current Analog Quantity)， RAIV400 (Voltage Analog Quantity)， RDIO400 (Digital Quantity)， and RMP Series I/O Sub-modules； and upward it connects with RCU501/RCU602 Master Controller
Bus Isolation Voltage 500V， Resistant to Ship Strong Electromagnetic Interference， Ground Loop Potential Difference
Built-in Local I/O Basic Channels
The module body integrates basic DI/DO Points， without the need for additional sub-modules to complete small-point control； expandable stacking of multiple RIO400 Series I/O Cards for capacity expansion

Electrical Power Supply Parameters
Power Supply Voltage： 24VDC Wide Voltage 18–32VDC (Marine Standard Power Supply)
Typical System Power Consumption： ≤12W， Idle Standby Current ≈0.45A
Protection Mechanism： Input Reverse Connection Protection， Surge Suppression， Internal Hardware Watchdog， Automatic Cut to Fault-Safe Output State in Case of Communication Loss
Power Supply Supports Dual Redundant Parallel Connection， Further Enhancing Uninterrupted Operation Capability