SAMSUNG SSAS-PRO SPTB-DO dedicated digital output terminal board
SAMSUNG SSAS-PRO SPTB-DO is a dedicated digital output terminal board engineered for marine automation, ship power management, and industrial panel wiring within the Samsung SSAS-Pro framework.
It acts as an organized electrical interface between SSAS-Pro digital output modules (such as the SPDO-16.
SPDO-24. or SPRDO-16) and field-side actuators like solenoid valves, contactors, alarm horns, and status lamps.
The SPTB-DO simplifies panel wiring layout, isolates high-current field circuits, and provides easily accessible terminal test points for online maintenance and signal verification.
Technical Table
| Specification | Parameter Details |
| Manufacturer / Series | Samsung Heavy Industries / SSAS-Pro Automation Series |
| Model | SPTB-DO (Digital Output Terminal Board) |
| Module Compatibility | Connects to SPDO-16, SPDO-24, and SPRDO-16 digital output modules |
| Terminal Clamp Type | Vibration-resistant screw-clamp or spring-cage terminals |
| Supported Wire Gauge | 0.2 mm² to 2.5 mm² (AWG 24 to AWG 12) |
| Operating Voltage Rating | Up to 250V AC / 30V DC (Load dependent) |
| Max Current Capacity | 2A per channel terminal (Max module total load limits apply) |
| Module Interconnect | Multi-pin heavy-duty ribbon cable or pre-formed harness connector |
| Test Access Points | Integrated probe points adjacent to each channel terminal |
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 Resistance: Certified to major marine classification society standards (DNV, ABS, LR, KR, NK) for severe engine room vibration.
Corrosion Protection: PCB traces coated with protective conformal varnish to withstand humid salt-spray atmospheres.
Operating Instructions
DIN Rail Mounting: Snap the SPTB-DO module securely onto a standard 35mm DIN rail inside the control cabinet.
Interconnect Cable Connection: Attach the dedicated multi-core cable from the SPTB-DO board directly to the output connector on the target SPDO or SPRDO card.
Field Load Termination: Strip field wire ends (approx. 7–8 mm), insert into the corresponding output channel terminals, and tighten to specified torque.
Inductive Suppression: For inductive loads (solenoid coils, relay coils), ensure flyback diodes (DC) or RC snubbers (AC) are installed across the load terminals to prevent back-EMF spikes.
Fault Diagnosis
Output Indicator Off / Field Load Inactive: Check logic signal status from the output module; inspect interconnect cable for loose pin connections or bent pins.
Blown Fuse / Open Output Channel: Inspect connected field device (solenoid coil or relay) for internal short circuits or current draw exceeding 2A per channel.
Intermittent Load Operation: Check terminal screws for loosening caused by persistent engine room vibration; verify proper wire stripping depth.
Related Models of the Same Series
SPTB-DI: Terminal Board for Digital Input Modules (SPDI Series)
SPTB-AI: Terminal Board for Analog Input Modules (SPAI / SPRI Series)
SPTB-AO: Terminal Board for Analog Output Modules (SPAO Series)
SPDO-16 / SPDO-24: Transistor Digital Output Modules
SPRDO-16: Heavy-Duty Relay Digital Output Module
SPDI-16 / SPDI-24: Discrete Digital Input Signal Acquisition Modules
Storage Conditions
Keep stored inside anti-static protective packaging in a clean, dust-free indoor facility.
Maintain storage temperatures between -25°C and +70°C with non-condensing relative humidity below 95%.
Protect from direct UV exposure, corrosive chemical fumes, salt spray, and physical shock.