Part of the Omron NX-Series Safety & I/O series — see the full model table, lifecycle status and replacement parts.
Omron NX-EC0142 — NX 1-Ch Encoder Input, PNP
SKU: NX-EC0142USD 122.00
Omron NX-EC0142 NX-series 1-channel incremental encoder input with RS-422 line receiver, PNP, 4 MHz A/B phases. In stock, China shipping.
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Product Overview
The Omron NX-EC0142 is the NX-series 1-channel incremental encoder input unit with line receiver (RS-422) input and PNP external inputs, manufactured by Omron Corporation. Hengyixin Automation stocks this controller option board 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 Position Interface Unit datasheet.
It sits on the NX I/O bus behind an NX-ECC201 EtherCAT Coupler, NX102, or NX1P2 CPU and reads one incremental encoder. Phases A and B accept single-phase pulses at 4 MHz, or 1 MHz in 4x mode; phase Z accepts 1 MHz. The 32-bit counter covers +/-2,147,483,647 pulses in linear or ring mode, with two external plus one internal latch.
Three external 24 VDC PNP inputs (1 us ON / 2 us OFF response) handle gate, reset, and presets. The slice supplies 5 VDC at 500 mA to the encoder from an isolated supply. 24 mm wide, 100 x 71 mm, 130 g, with two 12-terminal screwless push-in connectors. For the same input with NPN external inputs pick NX-EC0132. SIL None.
Key Features
- NX-series 1-channel incremental encoder input with RS-422 line receiver, PNP external inputs (24 VDC sourcing)
- Phases A and B 4 MHz single-phase / 1 MHz x4 phase-difference, phase Z 1 MHz, 32-bit counter range plus ring/linear mode
- 3 external 24 VDC PNP gate/reset inputs with 1 microsecond response, 5 VDC +/-5% 500 mA max encoder supply (non-isolated supply; A/B/Z signals digitally isolated)
- Screwless push-in 12-terminal x 2 connector, 12 x 100 x 71 mm, 130 g, Free-Run / Synchronous / Task Period Prioritized refreshing
- SKU: NX-EC0142
- Series: NX-series Position Interface Unit (NX-EC family) on NX I/O Bus and EtherCAT Coupler
Best-Fit Applications
- Press-feed registration on a stamping press where a 1,000 P/R encoder reports die position every 500 microseconds over EtherCAT
- Bottle-index timing on a rotary filler where the NX-EC0142 reads a 600 P/R cam encoder and gates the fill-valve on a PNP prox
- Spare replacement on a labeling line where the original NX-EC0142 was lost and Sysmac Studio holds the I/O map
Buying Checklist
- Pick the NX-EC0142 when the project needs one RS-422 line-receiver encoder channel with PNP external inputs on a 24 mm wide NX slice.
- Pick the NX-EC0132 instead when the external inputs need NPN (sinking) instead of PNP (sourcing) on the same 1-channel line receiver.
- Pick the NX-EC0112 instead when the encoder outputs 24 VDC voltage instead of RS-422 differential and the inputs are NPN.
Technical Specifications
| Manufacturer | Omron Corporation (Japan) |
|---|---|
| Series | NX-series Position Interface Unit (NX-EC family) on NX I/O Bus and EtherCAT Coupler |
| Model / SKU | NX-EC0142 |
| Number of Channels | 1 encoder channel |
| Input Signal | Line receiver (RS-422); phases A and B 4 MHz single-phase / 1 MHz x4 phase-difference; phase Z 1 MHz |
| Counter Range | -2,147,483,648 to +2,147,483,647 pulses (32-bit); ring or linear counter |
| External Inputs | 3 points PNP, 24 VDC +20%/-15%, 1 us ON / 2 us OFF response, 4.6 mA typical at 24 VDC |
| Encoder Supply | 5 VDC +/-5%, 500 mA max output from a non-isolated supply; A/B/Z signals use a digital isolator |
| Input Modes | Phase difference x2 / x4, pulse + direction, up/down pulse |
| Refreshing | Free-Run, Synchronous, or Task Period Prioritized refreshing |
| Connection / Power | Screwless push-in 12-terminal x 2; NX unit power 1.05 W max; I/O power 30 mA; 24 VDC via NX bus |
| Dimensions / Approvals | 12 (W) x 100 (H) x 71 (D) mm; 130 g; IP20; SIL None (not for safety); CE, cULus, RCM, KC, EAC |
FAQ for NX-EC0142
What is the Omron NX-EC0142 used for?
It is the NX-series 1-channel incremental encoder input unit for RS-422 line-receiver signals with PNP external inputs. Typical uses are press-feed registration on a stamping press, bottle-index timing on a rotary filler, and spare replacement on a labeling line where the Sysmac Studio tag database points at the same I/O map.
NX-EC0142 vs NX-EC0132 - what is the difference?
Both are NX-series 1-channel incremental encoder inputs with RS-422 line-receiver input. The NX-EC0142 has 3 PNP external inputs (sourcing, switch to 24 V); the NX-EC0132 has 3 NPN external inputs (sinking, switch to 0 V). Maximum encoder input frequency (4 MHz on A/B, 1 MHz on Z), 5 VDC 500 mA encoder supply, and 24 x 100 x 71 mm body are the same on both. Pick the NX-EC0142 for PNP field devices; pick the NX-EC0132 for NPN field devices.
What is the maximum encoder frequency for the NX-EC0142?
4 MHz on phases A and B in single-phase mode, 1 MHz in 4x phase-difference mode, and 1 MHz on phase Z. The 32-bit counter covers +/-2,147,483,647 pulses in ring or linear mode with two external latch inputs plus one internal latch. Refresh mode can be Free-Run, Synchronous, or Task Period Prioritized in Sysmac Studio.
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