SAMSUNG SSAS-PRO SPTB-DI dedicated terminal board
SAMSUNG SSAS-PRO SPTB-DI is a dedicated terminal board designed to facilitate clear, reliable signal wiring between field discrete sensors and SSAS-Pro digital input modules (such as the SPDI-16 or SPDI-24).
Operating as an essential wiring interface within the Samsung SSAS-Pro (Ship Automation System Pro) architecture, the SPTB-DI streamlines field connections from switches, alarm contacts, and limit sensors.
It organizes signal distribution, simplifies panel layout, and offers point-to-point test access for efficient troubleshooting during marine and industrial automation commissioning.
Technical Parameter List
| Specification | Parameter Details |
| Manufacturer / Series | Samsung Heavy Industries / SSAS-Pro Automation Series |
| Model | SPTB-DI (Digital Input Terminal Board) |
| Module Compatibility | Connects directly to SPDI-16, SPDI-24, and SPIRU-16 digital input channels |
| Terminal Connection Type | Heavy-duty screw clamp / spring-cage terminal blocks |
| Max Wire Gauge | 0.2 mm² to 2.5 mm² (AWG 24 to AWG 12) |
| Rated Voltage / Current | 24V DC field signal voltage / Max 2A per common bus |
| Interconnect Cable | Multi-pin ribbon cable / pre-fabricated connector cable to I/O module |
| Indicator / Test Points | Terminal-adjacent probe points for multimeter testing |
| Dimensions & Weight | Compact DIN-rail mount footprint (~0.25 kg) |
Product Features & Core Advantages
Streamlined Cabinet Wiring: Replaces messy point-to-point wiring with high-density organized terminal blocks, drastically reducing control panel assembly time.
Vibration-Proof Terminal Clamping: Built with high-retention spring or screw clamps engineered to prevent wire loosening under constant marine engine room vibration.
Simplified Maintenance & Diagnostics: Integrated test points allow technicians to measure field contact signals directly at the terminal board without disconnecting field wires.
Enhanced System Isolation: Isolates raw field wiring away from sensitive backplane electronics, serving as a clean boundary for field signal landing.
Model Classification
SSAS-Pro Terminal Board Series:
SPTB-DI: Terminal Board for Digital Input Modules (SPDI Series)
SPTB-DO: Terminal Board for Digital Output Modules (SPDO / SPRDO Series)
SPTB-AI: Terminal Board for Analog Input Modules (SPAI / SPRI Series)
SPTB-AO: Terminal Board for Analog Output Modules (SPAO Series)
Environmental Tolerance Conditions
Operating Temperature: -15°C to +55°C
Storage Temperature: -25°C to +70°C
Relative Humidity: 5% to 95% (non-condensing)
Vibration & Corrosion Resistance: Conforms to major marine classification society standards (DNV, ABS, LR, KR) for high-vibration and humid salt-spray environments.
Installation Method
DIN Rail Mounting: Snap the SPTB-DI terminal base securely onto a standard 35mm DIN rail inside the control cabinet.
Interconnect Cable Routing: Connect the dedicated multi-core ribbon or pre-fabricated cable from the SPTB-DI board connector to the corresponding slot on the SPDI digital input module.
Field Wiring Termination: Strip field wire ends (approx. 7–8 mm) and insert them into the designated channel terminals. Secure the screw/spring clamps firmly.
Shield Grounding: Clamp the overall shield of field cables to the cabinet earth grounding bar near the terminal board entry point.
Operating Instructions
Wiring Polarity Verification: Verify 24V DC contact power supply polarity across common terminal buses before applying power to field loops.
Signal Validation: Use a multimeter on the terminal test points to confirm field contact closures (open/short states) prior to system software commissioning.
Routine Servicing: Periodically inspect terminal torque during routine vessel maintenance to ensure high-vibration stability.