SAMSUNG SSAS-PRO SPTB-AI dedicated analog input terminal board
SAMSUNG SSAS-PRO SPTB-AI is a dedicated analog input terminal board designed for precise sensor signal termination within the Samsung SSAS-Pro (Ship Automation System Pro) architecture.
Functioning as a high-integrity interface between field transmitters and SSAS-Pro analog input modules (such as SPAI-16 or SPAI-6), the SPTB-AI organizes 4–20mA current loops and 0–10V DC sensor lines.
It provides dedicated shield grounding bars and built-in signal probe points to eliminate noise interference and simplify loop testing during commissioning.
Technical Parameter List
| Specification | Parameter Details |
| Manufacturer / Series | Samsung Heavy Industries / SSAS-Pro Automation Series |
| Model | SPTB-AI (Analog Input Terminal Board) |
| Module Compatibility | Connects directly to SPAI-16, SPAI-6, and SPRI-16 analog input modules |
| Terminal Clamp Type | Vibration-proof screw clamp or tension spring terminals |
| Supported Wire Gauge | 0.2 mm² to 2.5 mm² (AWG 24 to AWG 12) |
| Signal Compatibility | 4–20mA DC, 0–20mA DC, 0–10V DC, 1–5V DC, Pt100 RTD |
| Shield Termination | Integrated common earth bar for single-point shield grounding |
| Module Interconnect | Multi-pin shielded ribbon or pre-fabricated harness cable |
| Test Access Points | Front-facing multimeter test points per channel |
Product Features & Core Advantages
Noise-Immune Signal Termination: Built with dedicated cable shield clamps and single-point grounding paths to protect sensitive analog signals from heavy electromagnetic noise in marine engine rooms.
Streamlined Signal Testing: Integrated probe access points allow technicians to measure loop currents (4–20mA) or voltages directly at the terminal strip without opening signal circuits.
High-Retention Clamping: Engineered to maintain secure electrical contact under continuous high-vibration conditions typical of vessel operations.
Modular Interface Design: Standardized cable connectors enable rapid plug-and-play linkage to SSAS-Pro SPAI input cards, minimizing panel assembly time and wiring mistakes.
Model Classification
SSAS-Pro Terminal Board Series:
SPTB-AI: Terminal Board for Analog Input Modules (SPAI / SPRI Series)
SPTB-AO: Terminal Board for Analog Output Modules (SPAO Series)
SPTB-DI: Terminal Board for Digital Input Modules (SPDI Series)
SPTB-DO: Terminal Board for Digital Output Modules (SPDO / SPRDO 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 & Marine Compliance: Certified to major classification society standards (DNV, ABS, LR, KR, NK) for severe maritime engine room conditions.
Installation Method
DIN Rail Attachment: Snap the SPTB-AI base securely onto a standard 35mm DIN rail inside the instrument cabinet.
Interconnect Harness Connection: Plug the dedicated shielded multi-pin cable from the SPTB-AI terminal board into the target SPAI-16 or SPAI-6 analog input card slot.
Field Transmitter Termination: Strip transmitter cable ends (approx. 7–8 mm) and secure positive, negative, and loop power lines into the designated channel terminals.
Shield Grounding: Connect field cable braided shields directly to the SPTB-AI ground bar to prevent ground loop currents and ambient noise coupling.
Operating Instructions
Loop Power Verification: Check field loop power voltage (24V DC) and channel polarity before energizing sensor transmitters.
Current Loop Measurement: Utilize built-in test points to verify 4–20mA signal levels during zero and span transmitter calibration.
Routine Maintenance: Periodically check terminal screw tightness and inspect shield ground bars for oxidation or loose connections during scheduled vessel maintenance.