NX-TC3406

Overview of Omron NX-TC3406

The Omron NX-TC3406 is a 4-channel temperature control unit designed for the NX-series modular I/O system. It accepts multiple sensor input types including thermocouples (various types) and platinum resistance thermometers (Pt100, JPt100, Pt1000). The unit features isolated input circuits, PNP type 4 digital PWM outputs for heat or cool control, and supports free-running signal processing with fast conversion time of 50 ms per unit.

Key Features of Omron NX-TC3406

• Channels: 4 independent control loops with isolated analog sensor inputs.
• Input Types: Wide range including thermocouples (B, C (WRe5-26), E, J, K, L, N, R, S, T, U, P (PLII)) and resistance thermometer inputs (Pt100, JPt100, Pt1000, 3-wire).
• Output Type: 4 digital PNP PWM outputs, suitable for heater or cooling control.
• Signal Processing: Free running type for asynchronous updating of measurement and control.
• Isolation: High-level isolation between sensor inputs, control outputs, and internal circuitry (Transformer and digital isolators, photocoupler isolation).
• Mounting: DIN rail mounting with screwless clamping terminal blocks for easy installation and maintenance.
• Dimensions: 24 mm (W) × 100 mm (H) × 71 mm (D), weighing approximately 140 g.
• Protection and Safety: Load short-circuit protection, input disconnection detection, and insulation resistance ensure reliable and safe operation.
• Power Supply: Supplied from the NX bus, with 0.55 to 1.75 W power consumption depending on connection.
• Operating Environment: 0 to 55°C ambient temperature range with 10 to 90% humidity (non-condensing).

Technical Specs of Omron NX-TC3406

Model	NX-TC3406
Number of Channels	4
Input Types	Thermocouples (B, C, E, J, K, L, N, R, S, T, U, P), Pt100, JPt100, Pt1000 (3-wire)
Output Type	4 PNP digital PWM outputs
Conversion Time	50 ms per unit (per channel)
Isolation	Power: Transformer; Signal: Digital isolator; Output: Photocoupler isolation between outputs and internal circuit
Dimensions (W×H×D)	24 × 100 × 71 mm
Weight	140 g
Power Supply	NX Bus provided
Operating Temperature	0 to 55 °C
Humidity	10% to 90% (non-condensing)
Indicators	TS indicator, output indicators

Applications / Use Case

The NX-TC3406 is tailored for precise multi-channel temperature control in industrial automation, especially in processes requiring robust sensor integration, fast and stable control outputs, and easy system expansion within the NX-series I/O architecture.

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Verification Links:
https://industrial.omron.eu/en/products/NX-TC3406
https://www.omron-ap.com/products/family/3699/specification.html
https://www.mouser.com/ProductDetail/Omron-Automation-and-Safety/NX-TC3406