Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-TC3405 — 4-Loop Temperature Control
SKU: NX-TC3405USD 120.00
Omron NX-TC3405 NX temperature control, 4 loops, thermocouple + Pt100, 4 CT inputs. In stock, China shipping.
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Product Overview
The Omron NX-TC3405 is a temperature control unit from the NX-series I/O family, manufactured by Omron Corporation. Hengyixin Automation stocks this controller in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports.
The unit drives 4 PID loops with one multi-input thermocouple / RTD input per loop. Sensors include types B, C, E, J, K, L, N, P (PL II), R, S, T, U, plus Pt100, Pt1000, and resistance. Each loop has one PNP transistor output for SSR drive (24 VDC, 21 mA per point, PWM 5 to 50 ms) and one CT input for heater burnout detection from 0.0 to 50.0 A.
Conversion time is 50 ms across all 4 channels. The NX-TC3405 mounts on an NX102 CPU, NX1P2 CPU, or NX-ECC EtherCAT coupler. For 2-loop control, pick the NX-TC2405. To drop the CT inputs, the NX-TC3406 is the same loop count without heater burnout. Programming is in Sysmac Studio.
Key Features
- NX-series temperature control unit, 4 loops, multi-input thermocouple / Pt100 / Pt1000 / mV / resistance
- 4 PNP transistor outputs for SSR drive, 24 VDC at 21 mA per point, PWM cycle 5 to 50 ms
- 4 CT inputs for heater burnout detection from 0.0 to 50.0 A, 0.1 A resolution
- 50 ms conversion time per Unit, free-run refreshing, Push-in Plus terminal blocks, IP20
- SKU: NX-TC3405
- Series: Omron NX-series temperature control unit
Best-Fit Applications
- Four-zone extrusion line where each PID loop holds a barrel heater to within +/-1 C using SSR drive and CT-input heater burnout alarm
- Multi-zone reflow oven where one NX-TC3405 drives four heater zones while the host NX102 runs the conveyor and cooling profile
- Spare replacement on a plastic-injection molding machine where the previous 2-loop controller has been upgraded to 4 loops for one manifold
Buying Checklist
- Pick the NX-TC3405 for a 4-loop NX temperature control unit with heater burnout detection on each loop.
- Pick the NX-TC2405 instead when the cell needs 2 loops in the same NX-TC body.
- Pick the NX-TC3406 instead when heater burnout detection is not required and the cabinet needs the same 4 loops at lower cost.
Technical Specifications
| Manufacturer | Omron Corporation (Japan) |
|---|---|
| Series | Omron NX-series temperature control unit |
| Model / SKU | NX-TC3405 |
| Number of Channels | 4 loops with 1 temperature input + 1 CT input + 1 control output per loop |
| Sensor Inputs | Thermocouple B / C / E / J / K / L / N / P (PL II) / R / S / T / U, Pt100, Pt1000, resistance |
| Control Outputs | 4 PNP transistor outputs, 24 VDC, 21 mA per point, PWM 5 to 50 ms cycle |
| CT Inputs | 4 current transformer inputs, 0.0 to 50.0 A, 0.1 A resolution, heater burnout detection |
| Control Mode | Standard control with autotuning at power-up, 2-PID with set point profile |
| Conversion Time | 50 ms per Unit (all 4 channels) |
| I/O Refreshing | Free-run refreshing on coupler |
| Connection / Environment | Two 16-terminal Push-in Plus connectors, IP20, 24 VDC supply (20.4 to 28.8 VDC), 24 (W) x 100 (H) x 71 (D) mm, 140 g |
| Power Consumption | 0.95 W max from CPU, 20 mA max from I/O supply |
Manufacturer documentation
Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.
FAQ for NX-TC3405
What sensors does the NX-TC3405 accept?
Thermocouple types B, C, E, J, K, L, N, P (PL II), R, S, T, U, plus Pt100, Pt1000 RTD and direct resistance. Up to 4 sensors of any supported type, one per loop.
Does the NX-TC3405 have heater burnout detection?
Yes. Each loop has a current transformer (CT) input that monitors the heater current from 0.0 to 50.0 A and raises an alarm when the current falls below the configured band.
NX-TC3405 vs NX-TC2405 - what is the difference?
The NX-TC3405 is the 4-loop variant. The NX-TC2405 is the 2-loop variant in the same housing. Both support the same thermocouple / RTD inputs and PNP transistor outputs.
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