SAMSUNG SSAS-PRO SPAI-16 Analog Input Module



SAMSUNG SSAS-PRO SPAI-16 is a 16-channel analog input signal acquisition module engineered for marine engine monitoring, power management, and industrial process control. Operating within the Samsung SSAS-Pro (Ship Automation System Pro) architecture, the SPAI-16 converts continuous analog signals—such as 4–20mA current loops and 0–10V DC voltages from temperature sensors, pressure transmitters, flow meters, and level gauges—into precise digital data for high-speed central CPU processing.

Technical Parameter List

Product Features & Core Advantages

High Channel Density: Accommodates 16 precision analog inputs in a single compact footprint to conserve panel space.

Superior Noise Immunity: Multi-stage filtering and optical isolation shield analog signals from electromagnetic interference (EMI) and common-mode noise in engine room environments.

Comprehensive Fault Diagnostics: Real-time monitoring detects wire-break events (e.g., current loop dropping below 3.8mA), over-range signals, and sensor short circuits.

High-Precision A/D Conversion: 16-bit processing delivers fine measurement granularity for critical process monitoring like fuel pressure and bearing temperature.

Model Classification

SSAS-Pro Analog & Control Series:

SPAI-16: 16-Channel Analog Input Module

SPAI-6: 6-Channel High-Speed Analog Input Module

SPAO-8: 8-Channel Analog Output Module (4–20mA / 0–10V)

SPRI-16: 16-Channel RTD Temperature Input Module

SPDI-16 / SPDI-24: Digital Input Signal Modules

SPDO-16 / SPRDO-16: Transistor & Relay Digital Output Modules

Environmental Tolerance Conditions

Operating Temperature: -15°C to +55°C

Storage Temperature: -25°C to +70°C

Relative Humidity: Up to 95% (non-condensing)

Vibration & Shock: Built to comply with major marine classification society standards (DNV, ABS, LR, KR) for high-vibration shipboard machinery spaces.

Installation Method

Backplane / DIN Rail Mounting: Latch the module securely onto the 35mm panel DIN rail or designated SSAS-Pro rack slot. Verify system grounding connections.

Signal Wiring: Connect 4–20mA current loop or 0–10V sensor cables to the channel terminals, ensuring proper shield grounding at a single point.

Bus Interface: Attach the primary and secondary redundant communication bus cables to connect the SPAI-16 to the main controller.

Supply Voltage Check: Confirm 24V DC loop power voltage and correct polarity before powering on the system.

Operating Instructions

Input Type Setup: Configure channel input types (current vs. voltage) via module DIP switches or software settings prior to wiring sensors.

System Calibration: Perform zero and span calibration during initial commissioning to compensate for long cable run resistance.

Status Monitoring: Monitor LED indicators during startup. Steady green status indicates normal bus and channel operation; flashing amber/red alerts signal sensor loop fault or wire break.