AutomationDirect F2-04THM PLC Thermocouple Input Module

Description

AutomationDirect F2-04THM PLC Thermocouple Input Module

Product Dimensions：

Product Overview

The AutomationDirect F2-04THM is a 4-channel thermocouple input module designed for the DirectLOGIC 205 (DL205) PLC system. It allows DL205 PLCs (such as the D2-230, D2-240, D2-250-1, D2-260, and D2-262 CPUs) to directly process low-level millivolt signals from temperature sensors without requiring external signal conditioners.

Featuring built-in cold junction compensation (CJC) and high-resolution analog conversion, it is tailored for precise temperature monitoring in process automation and control applications.

Technical Specifications

Key Advantages

• High Resolution & Accuracy: 16-bit conversion resolution provides precise temperature resolution across all standard thermocouple ranges.
• Broad Sensor Compatibility: Supports 9 common thermocouple types (J, K, E, R, S, T, B, N, C) and millivolt signals, offering great flexibility across diverse industrial setups.
• Integrated Cold Junction Compensation: Onboard thermistor automatically compensates for ambient temperature variations at the terminal connections.
• Cost-Effective System Expansion: Plugs directly into any slot of a DL205 base, eliminating the need for standalone temperature transmitters.
• Removable Terminal Block: Facilitates quick wiring installation and effortless module replacement without disconnecting individual field wires.

Important Usage & Installation Precautions

• External 24 VDC Power Supply: The module requires an external 24 VDC supply (60 mA) connected to terminals 24V and 0V to power its analog circuitry; it will not operate on backplane power alone.
• DIP Switch Configuration: Sensor type (J, K, etc.) and temperature scale (°C vs. °F) are selected via internal DIP switches on the module PCB. Set these correctly before installing the module in the rack.
• Shielding & Noise Suppression: Always use shielded, twisted-pair thermocouple extension wire. Connect the wire shield to the module ground terminal at one end only to prevent ground loops.
• Open Sensor Detection: Ensure your PLC logic accounts for upscale or downscale burn-out indication when a thermocouple wire breaks or disconnects.
• Channel Grounding: Differential inputs help minimize noise, but field wiring should not be grounded at multiple points to avoid common-mode voltage limits being exceeded.

Applications

• Industrial Ovens & Furnaces: Temperature monitoring and PID loop control in heat-treating, drying, and curing processes.
• Plastics Injection Molding: Multi-zone barrel and nozzle temperature sensing on plastic extrusion and molding equipment.
• Chemical & Food Processing: Monitoring kettle, vat, and pipe temperatures in sanitary and batch processing systems.
• HVAC & Environmental Chambers: Precise measurement in climate test chambers and large air distribution networks.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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