SAMSUNG SPDI-16 (Digital Input Module)
SAMSUNG SSAS-PRO SPDI-16 is a 16-channel digital input module designed for marine automation, shipboard engine monitoring, and industrial alarm systems. Part of the Samsung SSAS-Pro (Ship Automation System Pro) architecture, the module collects binary status signals (on/off, switch contacts, alarm states, pulse counts) from machinery and field sensors and transmits the processed data to central control units or operator workstations (SPOWS).
Technical Parameter List
| Specification | Parameter |
| Manufacturer / Series | Samsung Heavy Industries / SSAS-Pro Series |
| Model | SPDI-16 (Digital Input Module) |
| Input Channels | 16 Active Digital Input Channels (Supports up to 24-channel configuration) |
| Input Signal Types | Dry contact, wet contact, or pulse inputs |
| Isolation Protection | Optical isolation between field logic and system bus (1500V RMS standard) |
| Diagnostics / Fault Detection | Wire break detection and loop fault identification |
| Communication Bus | Redundant system highway / Industrial Ethernet bus interface |
| Status Indicators | Front LED indicators per input channel for real-time status |
| Dimensions & Weight | Approx. 13.0 × 13.5 × 5.0 cm |
Product Features & Core Advantages
Optical Isolation Protection: High-grade optocouplers isolate internal logic from field wiring, preventing electrical noise, high-voltage spikes, and ground loops from damaging the main automation system.
Real-Time Fault Diagnostics: Built-in wire break detection quickly identifies broken sensor cables or open-circuit faults to minimize downtime.
High Density & Reliability: Compact footprint carrying 16 channels, optimized for continuous high-vibration maritime and industrial environments.
Seamless System Integration: Natively pairs with SSAS-Pro CPU modules (such as RSPC-X32) and SPOWS graphics workstations for continuous alarm logging.
Model Classification
SSAS-Pro Digital Series:
SPDI-16: 16-Channel Digital Input Module
SPDO-16: 16-Channel Digital Output Module
SPAI-16 / SPAI-6: Analog Input Modules
SPAO-8: Analog Output Module
SPRI-16: RTD Temperature Input Module
Environmental Tolerance Conditions
Operating Temperature: -15°C to +55°C
Storage Temperature: -25°C to +70°C
Vibration Resistance: Designed to meet marine classification standards (DNV, ABS, LR, KR) for ship engine room installations.
Relative Humidity: Up to 95% (non-condensing).
Installation Method
DIN Rail / Backplane Mounting: Mount the unit firmly onto the panel DIN rail or designated SSAS-Pro base rack. Ensure structural grounding is secured.
Terminal Wiring: Connect field sensors to input terminals according to channel polarity and dry/wet contact requirements.
Bus Interconnect: Plug in the primary and secondary communication ribbon/Ethernet cables connecting the SPDI-16 module to the main CPU frame.
Power Verification: Verify 24V DC field supply voltage prior to energizing the module.
Operating Instructions
Pre-Power Inspection: Check field terminal connections for short circuits or reverse polarity before applying power.
Status Diagnostics: Observe channel LEDs during startup. Solid channel LEDs indicate active contact closure; blinking or off indicators indicate open circuits or loop wire faults.
Maintenance & Hot-Swapping: Ensure system interlocks are disabled before replacing faulty modules during online maintenance.