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

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