Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-TS3201 — 4-Ch RTD Input, Pt100 / Pt1000
SKU: NX-TS3201USD 224.00
Omron NX-TS3201 NX temperature input, 4 Pt100/Pt1000 3-wire, 0.1 C, 250 ms. In stock, China shipping.
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Product Overview
The Omron NX-TS3201 is a temperature input 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 reads 4 RTD sensors (Pt100 or Pt1000, 3-wire) with 0.1 C resolution and 250 ms conversion across all 4 channels. Input detection current is around 0.25 mA per channel. Reference accuracy over -200 to +850 C is +/-1.0 C from -200 to +300 C, +/-2.0 C from +300 to +700 C, and +/-2.5 C from +700 to +850 C.
Conductor-resistance effect is 0.06 C/Ohm max at 20 Ohm max. I/O refresh is free-run only. Photocoupler and transformer isolation separates inputs from the NX bus. Warm-up 10 minutes. Power consumption 1.75 W max on CPU or 1.30 W max on coupler. For thermocouple inputs (J, K, R, S, T), pick the NX-TS3101; for 4-point closed-loop PID control, the NX-TC3405. Programming is in Sysmac Studio.
Key Features
- NX-series temperature input unit, 4 channels Pt100 or Pt1000 RTD (3-wire), 0.1 C resolution
- 250 ms conversion time per unit (all 4 channels), 0.25 mA detection current per channel
- Reference accuracy +/-1.0 C from -200 to +300 C, +/-2.5 C from +700 to +850 C
- Free-run I/O refreshing, transformer + photocoupler isolation, 24 mm wide, 140 g, IP20
- SKU: NX-TS3201
- Series: Omron NX-series temperature input unit (RTD)
- I/O: 4 I/O
Best-Fit Applications
- Multi-zone oven where 4 Pt100 probes monitor 4 heating zones and report every 250 ms to the NX102 controller for closed-loop trim
- Cold-chain warehouse where Pt1000 sensors on 4 air-handling units feed temperature data to a SCADA via the NX bus, no extra wiring
- Spare replacement on a heat-treat furnace where the previous 4-channel thermocouple unit has been upgraded to RTD for tighter accuracy
Buying Checklist
- Pick the NX-TS3201 for 4-channel RTD temperature input on the NX bus with 0.1 C resolution and 250 ms cycle.
- Pick the NX-TS3101 instead when the sensors are thermocouples (J, K, R, S, T) rather than RTDs.
- Pick the NX-TC3405 instead when the application needs 4 built-in PID control outputs for closed-loop temperature control.
Technical Specifications
| Manufacturer | Omron Corporation (Japan) |
|---|---|
| Series | Omron NX-series temperature input unit (RTD) |
| Model / SKU | NX-TS3201 |
| Number of Points | 4 RTD inputs |
| Sensor Type | Pt100 (3-wire) / Pt1000 (3-wire) |
| Resolution | 0.1 C max |
| Conversion Time | 250 ms per unit (all 4 channels) |
| Reference Accuracy | +/-1.0 C (-200 to +300 C), +/-2.0 C (+300 to +700 C), +/-2.5 C (+700 to +850 C) |
| Temperature Coefficient | +/-0.1 C/C (-200 to +300 C), up to +/-0.25 C/C (+700 to +850 C) |
| Conductor Resistance Effect | 0.06 C/Ohm max at 20 Ohm max lead resistance |
| I/O Refreshing | Free-run refreshing only |
| Connection / Environment | Two 16-terminal detachable screwless push-in connectors, IP20, 0 to 55 C, 24 (W) x 100 (H) x 71 (D) mm, 140 g |
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-TS3201
What sensors work with the NX-TS3201?
Any 3-wire Pt100 or Pt1000 RTD. Two-wire and 4-wire RTDs are not supported on this unit; for thermocouple sensors (J, K, R, S, T) use the NX-TS3101 sibling.
How fast does the NX-TS3201 convert?
250 ms per unit, covering all 4 channels in a single scan. This sets the temperature loop cycle at the controller side. For faster 10 ms scans on Pt100 only, pick the NX-TS3202.
Does the NX-TS3201 need warm-up time?
Yes. The published accuracy spec assumes a 10 minute warm-up period after power-on. Allow that before trusting readings in cold-start scenarios.
What is the accuracy of the NX-TS3201?
Reference accuracy is +/-1.0 C from -200 to +300 C, +/-2.0 C from +300 to +700 C, and +/-2.5 C from +700 to +850 C. This is the unit accuracy, plus the effect of lead resistance (0.06 C/Ohm at 20 Ohm max).
Can the NX-TS3201 run on an EtherCAT coupler?
Yes. The NX-TS3201 mounts on any NX-series CPU backplane (NX102, NX1P2, NJ-series) or on an NX-ECC EtherCAT coupler. Power consumption drops to 1.30 W max on a coupler vs 1.75 W max on a CPU.
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