NU-EP1 Keyence Network Communication Unit EtherNet

NU-EP1 Keyence Network Communication Unit for EtherNet/IP Systems

Core Technical Specifications

• Model: NU-EP1; Brand: Keyence; Series: NU
• Ethernet: IEEE802.3 (10BASE-T) and IEEE802.3u (100BASE-TX) with IEEE802.3af PoE Class 3 support
• Cable length: Maximum 100 m per segment
• Protocol support: EtherNet/IP cyclic (implicit) messaging plus explicit message (UCMM, Class 3)
• Connection capacity: 64 connections with RPI 0.5 to 10,000 ms
• Sensor connection: N-bus compatible amplifiers, up to 16 units
• Passing current: 1,200 mA or less total
• Power supply: 24 VDC +/-10% through power connector; 48 VDC to 57 VDC during PoE
• Power consumption: 1,500 mW or less (60 mA at 24 V, excluding sensor current)
• Operating temperature: -20 to +55 °C (no freezing)
• Humidity range: 35 to 85% RH (no condensation)
• Weight: Approx. 0.08 kg including connectors

Network and Sensor Integration

• The unit carries one RJ-45 Ethernet port with PoE and uses the N-bus wiring-saving connector for amplifiers.
• EtherNet/IP cyclic communication moves sensor states at a user-set RPI from 0.5 ms to 10,000 ms.
• Explicit messaging (UCMM, Class 3) supports configuration and diagnostic reads from the controller.
• The N-bus link accepts up to 16 amplifiers and limits total passing current to 1,200 mA.
• This architecture suits inspection cells, packaging machines and assembly stations with many sensors.

Installation Guide

• Mount the NU-EP1 on a DIN rail or panel inside the control cabinet, away from heat sources.
• Connect N-bus amplifiers with the wiring-saving connector and confirm the total current stays below 1,200 mA.
• Use a shielded Cat 5e or better cable for the RJ-45 port and keep the run under 100 m.
• Apply 24 VDC to the power connector, or feed PoE (48 to 57 VDC) through the Ethernet cable.
• Set the IP address and the RPI value in the EtherNet/IP configuration tool before startup.
• Verify cyclic data exchange and explicit message access, then secure all connectors and cable ties.

Environmental Durability and Interference Resistance

• The -20 to +55 °C range covers cold storage rooms and warm machine enclosures without extra heating.
• 35 to 85% RH operation without condensation suits most factory floors and wash-down adjacent areas.
• Shielded Ethernet cabling and PoE Class 3 power delivery reduce electrical noise on the network line.
• Short RPI settings give fast updates, while longer values lower network load on busy EtherNet/IP segments.

Package Contents

• 1 x Keyence NU-EP1 network communication unit
• 1 x wiring-saving connector for N-bus amplifiers
• 1 x power connector
• 1 x quick reference sheet

Shipping and Support

• We keep this item in stock as brand new original stock.
• We ship within 5 days through FedEx, UPS or DHL.
• We accept returns within 30 days of delivery.

FAQ

• Q: How many sensor amplifiers can the NU-EP1 connect? A: The N-bus link supports up to 16 compatible amplifiers with 1,200 mA total passing current.
• Q: What RPI range does the unit support? A: You can set the requested packet interval from 0.5 ms to 10,000 ms for cyclic EtherNet/IP data.
• Q: Does the unit need a separate 24 V supply when PoE feeds it? A: PoE delivers 48 to 57 VDC through the Ethernet cable, so the 24 VDC connector becomes optional.
• Q: What cable length works with this unit? A: Keep each Ethernet segment at 100 m or less to stay within IEEE802.3 limits.
• Q: Which temperature range does the NU-EP1 handle? A: It operates from -20 to +55 °C without freezing and from 35 to 85% RH without condensation.
• Q: Is the unit in stock and how fast do you ship? A: We hold brand new original stock and dispatch within 5 days by FedEx, UPS or DHL.