Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-ECC202 — EtherCAT Coupler Unit
SKU: NX-ECC202USD 102.00
EtherCAT Coupler Unit for the NX-series I/O system, accepts up to 63 NX I/O units, 250–4000 µs communication cycle
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Product Overview
The Omron NX-ECC202 is the high-I/O-current EtherCAT Coupler Unit for Omron's NX-series distributed I/O system, identical in protocol and connector layout to the NX-ECC201 but with a 10 A I/O power supply rating instead of the 4 A on the standard model. 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. Specifications on this page were checked against Omron's NX-series EtherCAT Coupler Unit datasheet.
It is the head of any remote NX slice where the downstream digital output modules draw more than 4 A at 24 VDC — typical for large banks of 8-point or 16-point PNP transistor outputs driving dozens of 24 VDC solenoid valves, indicator lamps, or relay coils. Pick NX-ECC202 when the total I/O load of the downstream NX units exceeds 4 A at 24 VDC.
The daisy-chain OUT port can pass EtherCAT to another NX slice or to a third-party EtherCAT slave (servo drive, vision system, remote I/O block) for distributed control.
Key Features
- 10 A I/O power supply for high-current I/O banks
- 10 W unit power output for the NX bus logic
- EtherCAT cycle time 250 µs to 4,000 µs
- Rotary x10 / x1 ID switches for node addressing
- SKU: NX-ECC202
- Series: NX (EtherCAT Coupler)
- I/O: 10 I/O
Best-Fit Applications
- Mixing digital, analog, and safety I/O in one high-current NX panel
- Bridging NX I/O into a third-party EtherCAT master with heavy I/O load
- Large-panel assembly cell where digital output banks exceed 4 A total I/O current
Buying Checklist
- Pick NX-ECC202 for the standard EtherCAT coupler with 10 A I/O power
- Pick NX-ECC201 when the slice draws less than 4 A of I/O power
- Pick NX-ECC203 when you need 125 µs minimum cycle time for high-speed synchronized I/O
Technical Specifications
| Model | NX-ECC202 |
|---|---|
| Series | NX (EtherCAT Coupler) |
| Type | EtherCAT Coupler Unit (high-current variant) |
| EtherCAT Ports | 2 (IN and OUT, 100 Mbps) |
| Max NX Units | 63 |
| Communication Cycle | 250 to 4,000 µs |
| PDO Input Size | 1,024 bytes max |
| PDO Output Size | 1,024 bytes max |
| Unit Power Output | NX Unit power supply capacity 10 W max from a 24 VDC (20.4 to 28.8 VDC) input; efficiency 70 % |
| Max I/O Power Current | 10 A (NX-ECC203 is also a 10 A coupler; NX-ECC201 is 4 A) |
| Dimensions (W x H x D) | 46 × 100 × 71 mm; 170 g |
| Operating Temperature | 0 to +55 °C |
| Certifications | CE, UL, cULus, KC, RCM |
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-ECC202
What is the difference between NX-ECC201 and NX-ECC202?
Identical except for I/O power supply current capacity: NX-ECC201 supplies up to 4 A to the I/O bus, NX-ECC202 supplies up to 10 A. Both have the same 250–4000 µs EtherCAT cycle time and same NX bus interface. Pick NX-ECC202 when the downstream digital output modules in the slice draw more than 4 A at 24 VDC; for most slices with mixed digital / analog I/O, the NX-ECC201 is sufficient.
How many NX I/O units can I connect to one NX-ECC202?
Up to 63 NX units on the right side of the coupler, same as the NX-ECC201. The I/O current capacity (10 A) is independent of the unit count; you can connect 63 low-power units or fewer high-current units as long as the total I/O current draw does not exceed 10 A.
Can I mix NX-ECC201 and NX-ECC202 on the same EtherCAT network?
Yes — each NX slice is its own EtherCAT slave with its own node ID, and the I/O current capacity is per-slice. You can have one NX-ECC201 slice with light I/O (sensors, low-current digital outputs) and another NX-ECC202 slice with heavy I/O (high-current valves, lamps), and the EtherCAT master treats them as independent stations.
What does the TS LED indicate?
TS (Touch Sensor or Terminal Status) is a green LED that indicates the NX bus on the right side of the coupler is communicating with the NX I/O units. Solid green when all units are responding, flashing when one or more units are missing or faulty, off when no units are connected or the coupler has lost NX bus communication. Together with RUN / ERR, it is the primary commissioning indicator for the slice.
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