Omron NJ301 PLC Programmable Logic Controller
The Omron NJ301 is a high-performance Machine Automation Controller (MAC) within the Sysmac NJ-series, designed for integrated control of logic, motion, and networking. Ideal for mid-level machines requiring precise, synchronized motion and real-time performance, the NJ301 combines flexibility, speed, and scalability for smart industrial automation.
Categories:
Omron NJ Series PLC- Integration of Logic and Motion in one CPU.
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Conforms to IEC 61131-3 (JIS B 3503) standard programming and PLCopen function blocks for Motion Control.
Programming with variables allows users to create complex programs efficiently. - Fast and accurate control by synchronizing all EtherCAT devices, such as vision sensors, servo drives, and field devices, with the PLC and Motion Engines.
- Offers speed without compromising on reliability and robustness expected from PLCs.
- Complete RAS functions: Transmission frame error check, timeout, bus diagnosis, Watchdog (WDT), memory check, and topology check, etc.
- Ideal for small-scale control with up to 8 axes.
- Linear and circular interpolation.
- Electronic gear and cam synchronization.
| Specification | Description | |||
|---|---|---|---|---|
| Item | NJ301 | |||
| Enclosure | Mounted in a panel | |||
| Grounding Method | Ground to less than 100 Ω | |||
| Dimensions (height×depth×width) | 90 mm × 90 mm × 90 mm | |||
| Weight | 550 g (including the End Cover) | |||
| Current Consumption | 5 VDC, 1.90 A (including SD Memory Card and End Cover) | |||
| Operation Environment | Ambient Operating Temperature | 0 to 55°C | ||
| Ambient Operating Humidity | 10% to 90% (with no condensation) | |||
| Atmosphere | Must be free from corrosive gases. | |||
| Ambient Storage Temperature | -20 to 75°C (excluding battery) | |||
| Altitude | 2,000 m or less | |||
| Pollution Degree | 2 or less: Meets IEC 61010-2-201. | |||
| Noise Immunity | 2 kV on power supply line (Conforms to IEC 61000-4-4.) | |||
| Overvoltage Category | Category II: Meets IEC 61010-2-201. | |||
| EMC Immunity Level | Zone B | |||
| Vibration Resistance | Conforms to IEC 60068-2-6. 5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz Acceleration of 9.8 m/s² for 100 min in X, Y, and Z directions (10 sweeps of 10 min each = 100 min total) | |||
| Shock Resistance | Conforms to IEC 60068-2-27. 147 m/s², 3 times in X, Y, and Z directions (100 m/s² for Relay Output Units) | |||
| Battery | Life *1 | 5 years at 25°C | ||
| Model | CJ1W-BAT01 | |||
| Applicable Standards *2 | cULus, EU, UKCA, RCM, KC, NK, LR *3 | |||
| Function | Specification | ||||
|---|---|---|---|---|---|
| Item | NJ301- | ||||
| 1200 | 1100 | ||||
| Processing time | Instruction Execution Times | LD instruction | 1.6 ns (2.5 ns or less) *2 | ||
| Math Instructions (for Long Real Data) | 35 ns or more *2 | ||||
| Program- ming | Program capacity *3 | Size | 5 MB (100 KS) | ||
| Number | POU definition | 750 | |||
| POU instance | Using Sysmac Studio Ver. 1.04 or lower: 1,500 Using Sysmac Studio Ver. 1.05 or higher: 3,000 | ||||
| Variables capacity | No Retain Attribute *4 | Size | 2 MB | ||
| Number | 90,000 *6 | ||||
| Retain Attribute *7 | Size | 0.5 MB | |||
| Number | Using Sysmac Studio Ver. 1.04 or lower: 2,500 Using Sysmac Studio Ver. 1.05 or higher: 5,000 | ||||
| Data type | Number | 1,000 | |||
| Memory for CJ-Series Units (Can be Specified with AT Specifications for Variables.) | CIO Area | 6,144 words (CIO 0 to CIO 6143) | |||
| Work Area | 512 words (W0 to W511) | ||||
| Holding Area | 1,536 words (H0 to H1535) | ||||
| DM Area | 32,768 words (D0 to D32767) | ||||
| EM Area | 32,768 words × 4 banks (E0_00000 to E3_32767) *8 | ||||
| Unit config- uration | Maximum Number of Connectable Units | Maximum number of CJ/ NX unit per CPU Rack or Expansion Rack | 10 Units | ||
| Maximum number of CJ unit on the system | 40 Units | ||||
| Maximum number of NX unit on the system | 4,096 (on NX series EtherCAT slave terminal) | ||||
| Maximum number of Expansion Racks | 3 max. | ||||
| I/O Capacity | Maximum number of I/O Points on CJ-series Units | 2,560 points max. | |||
| Power Supply Unit for CPU Rack and Expansion Racks | Model | NJ-P[]3001 | |||
| Power OFF Detection Time | AC Power Supply | 30 to 45 ms | |||
| DC Power Supply | 22 to 25 ms | ||||
| Motion control | Number of Controlled Axes | Maximum Number of Controlled Axes | Maximum number of axes which can be defined. | ||
| 15 axes *9 | 15 axes *9 | ||||
| Motion control axes | Maximum number of motion control axes which can be defined. All motion control function is available. | ||||
| 15 axes | 15 axes | ||||
| Maximum number of used real axes | Maximum number of used real axes. The Number of used real axes includes following servo axes and encoder axes. | ||||
| 8 axes | 4 axes | ||||
| Used motion control servo axes | Maximum number of servo axes which all motion control function is available. | ||||
| 8 axes | 4 axes | ||||
| Maximum number of axes for linear interpolation axis control | 4 axes per axes group | ||||
| Number of axes for circular interpolation axis control | 2 axes per axes group | ||||
| Maximum Number of Axes Groups | 32 groups | ||||
| Motion Control Period | The same control period as that is used for the process data communications cycle for EtherCAT. | ||||
| Cams | Number of Cam Data Points | Maximum Points per Cam Table | 65,535 points | ||
| Maximum Points for All Cam Tables | 262,140 points | ||||
| Maximum Number of Cam Tables | 160 tables | ||||
| Position Units | Pulses, millimeters, micrometers, nanometers, degrees or inches | ||||
| Override Factors | 0.00% or 0.01% to 500.00% | ||||
| Peripheral USB port | Supported Services | Sysmac Studio connection | |||
| Physical Layer | USB 2.0-compliant B-type connector | ||||
| Transmission Distance between Hub and Node | 5 m max. | ||||
| Built-in EtherNet/IP Port | Number of port | 1 | |||
| Physical Layer | 10Base-T or 100Base-TX | ||||
| Frame length | 1514 max. | ||||
| Media Access Method | CSMA/CD | ||||
| Modulation | Baseband | ||||
| Topology | Star | ||||
| Baud Rate | 100 Mbps (100Base-TX) | ||||
| Transmission Media | STP (shielded, twisted-pair) cable of Ethernet category 5, 5e or higher | ||||
| Maximum Transmission Distance between Ethernet Switch and Node | 100m | ||||
| Maximum Number of Cascade Connections | There are no restrictions if Ethernet switch is used. | ||||
| CIP service: Tag Data Links (Cyclic Communi- cations) | Maximum Number of Connections | 32 | |||
| Packet interval *10 | 1 to 10,000 ms in 1.0-ms increments *11 Can be set for each connection. (Data will be refreshed at the set interval, regardless of the number of nodes.) | ||||
| Permissible Communications Band | 3,000 pps *12 *13 (including heartbeat) | ||||
| Maximum Number of Tag Sets | 32 | ||||
| Tag types | Network variables, CIO, Work, Holding, DM, and EM Areas | ||||
| Number of tags per connection (i.e., per tag set) | 8 (7 tags if Controller status is included in the tag set.) | ||||
| Maximum Link Data Size per Node (total size for all tags) | 256 | ||||
| Maximum number of tag | 19,200 bytes | ||||
| Maximum Data Size per Connection | 600 bytes | ||||
| Maximum Number of Registrable Tag Sets | 32 (1 connection = 1 tag set) | ||||
| Maximum Tag Set Size | 600 bytes (Two bytes are used if Controller status is included in the tag set.) | ||||
| Multi-cast Packet Filter *14 | Supported. | ||||
| Cip Message Service: Explicit Messages | Class 3 (number of connections) | 32 (clients plus server) | |||
| UCMM (non- connection type) | Maximum Number of Clients that Can Communicate at One Time | 32 | |||
| Maximum Number of Servers that Can Communicate at One Time | 32 | ||||
| Maximum number of TCP socket service | 30 *15 | ||||
| Built-in EtherCAT Port | Communications Standard | IEC 61158 Type12 | |||
| EtherCAT Master Specifications | Class B (Feature Pack Motion Control compliant) | ||||
| Physical Layer | 100BASE-TX | ||||
| Modulation | Baseband | ||||
| Baud Rate | 100 Mbps (100Base-TX) | ||||
| Duplex mode | Auto | ||||
| Topology | Line, daisy chain, branching and ring *17 | ||||
| Transmission Media | Twisted-pair cable of category 5 or higher (double-shielded straight cable with aluminum tape and braiding) | ||||
| Maximum Transmission Distance between Nodes | 100m | ||||
| Maximum Number of Slaves | 192 | ||||
| Range of node address | 1-192 | ||||
| Maximum Process Data Size | Inputs: 5,736 bytes Outputs: 5,736 bytes *18 | ||||
| Maximum Process Data Size per Slave | Inputs: 1,434 bytes Outputs: 1,434 bytes | ||||
| Communications Cycle | 500/1,000/2,000/4,000 μs *19 | ||||
| Sync Jitter | 1 μs max. | ||||
| Internal Clock | At ambient temperature of 55°C: -4.5 to +4.5 min error per month At ambient temperature of 25°C: -3.5 to +3.5 min error per month At ambient temperature of 0°C: -4.5 to +4.5 min error per month | ||||
| Product name | Specifications | Model | |||
|---|---|---|---|---|---|
| I/O capacity/Model Standards maximum number of configuration Units (Expansion Racks) | Program capacity | Memory capacity for variables | Number of motion axes | ||
| NJ301 CPU Units | 2,560 points/40 Units (3 Expansion Racks) | 5 MB | 0.5 MB: Retained during power interruption 2 MB: Not retained during power interruption |
8 | NJ301-1200 |
| 4 | NJ301-1100 | ||||
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Catalog Name
|
Catalog Number[size]
|
Last Update
|
|
|---|---|---|---|
| NJ-Series Data Sheet | P140-E1-25 [5902KB] |
Jul 01, 2025 | NJ-Series Data Sheet |
| NJ/NX Series Controller Catalog | P089-E1-29 [4858KB] |
Mar 03, 2025 | NJ/NX Series Controller Catalog |
| Sysmac Automation Platform Catalog | P079-E1-34 [11591KB] |
Mar 03, 2025 | Sysmac Automation Platform Catalog |
| Applicable Models of Cable Redundancy Function | R200-E1-06 [213KB] |
Aug 26, 2024 | Applicable Models of Cable Redundancy Function |
| HMC-SD292/492/1A2 Data Sheet | - [244KB] |
Jun 05, 2023 | HMC-SD292/492/1A2 Data Sheet |
Applications
- Multi-axis packaging machines
- Assembly automation
- Robotics and material handling
- Industrial printing and converting
- Precision inspection and sorting systems
Why Choose
- Mid-range performance with excellent cost-to-value ratio
- Scalable architecture for growing automation needs
- Industry-ready: supports motion, robotics, vision, and safety in one platform
- Easy integration with SCADA, MES, and cloud systems
- Backed by Omron’s global service and support
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