SAMSUNG SMTC-8 Thermocouple Input Module
SAMSUNG SMTC-8 Thermocouple Input Module
The SAMSUNG SMTC-8 is an 8-channel temperature acquisition expansion module designed for Samsung SPC and SM-series PLC automation systems. It converts millivolt signals from thermocouple sensors directly into digital data for CPU processing without requiring external transmitters.
Product Advantages and Features
High-Density Channel Integration: Features 8 dedicated channels for multi-point temperature measurement within a compact DIN-rail footprint.
Broad Sensor Compatibility: Supports standard industry thermocouple types, including K, J, E, T, N, R, and S.
Built-In Cold Junction Compensation (CJC): Internal CJC circuitry and digital filtering eliminate external ambient temperature drift and reduce high-frequency electrical noise.
Burnout & Open-Circuit Detection: Automatically identifies sensor failure or wire breakage to prevent process overheating or runaway conditions.
High Isolation Protection: Optical isolation between field terminals and backplane buses shields the main PLC CPU from voltage surges and ground loops.
Application Cases
Plastics & Rubber Processing: Multi-zone temperature regulation along injection molding barrels and extruder dies.
Heat Treatment & Metallurgy: Real-time multi-point monitoring inside industrial annealing furnaces, ovens, and kilns.
Food, Beverage & Pharma: Thermal profile tracking for sterilization autoclaves and spray-drying towers.
Chemical Processing: Temperature guard tracking for chemical reactors and distillation columns.
Other Models in the Same Series
| Model | Module Type | Key Specifications / Description |
| SMTC-4 | Thermocouple Module | 4-channel thermocouple input |
| SMRT-4 / SMRT-8 | RTD Input Module | 4 / 8-channel Resistance Temperature Detector (Pt100 / JPt100) |
| SMAD-8 | Analog Input Module | 8-channel voltage/current input (0–10V, 4–20mA) |
| SMDA-4 | Analog Output Module | 4-channel analog voltage/current output for actuator control |
| SMCU-CPU | Controller Unit | Main CPU module for Samsung SPC/SM PLC systems |
Installation and Maintenance
Installation Guidelines:
Power down the PLC base rack completely before inserting the SMTC-8 module into the expansion slot.
Wire sensors using dedicated thermocouple extension/compensating wire. Keep wires away from high-voltage motor cables and VFD drive lines.
Maintain correct polarity (+ / -) at the terminal block to avoid inverted temperature readings.
Maintenance & Troubleshooting:
RUN LED Off: Inspect backplane seating and check 24V DC bus power connections.
ERROR LED Blinking: Check for open sensor circuits, loose terminal screws, or out-of-range sensor readings.
Value Drift: Ensure shield wires are grounded at a single point to prevent ground loops