In this video, we're going to introduce you to the NX/NJ series of Omron Controllers.
The NX/NJ controllers are very powerful
as they combine both PLC and motion control functions into one package.
Before we dive into the specifics of the Omron NX/NJ controllers,
let’s discuss a couple of concepts.
First of all, you might ask
“What’s the difference between a PLC and a Motion Controller?”
The difference between a PLC and a motion controller
is becoming more blurry by the day.
PLCs were originally designed to replace the huge number of switches and relays
that performed the logical control of electrical circuits.
A Motion Controller typically refers to servo,
stepper, or proportional hydraulic valve systems
with extremely precise and lightning-fast position/velocity/torque control.
Over the last two decades, PLCs were built that integrated motion functions,
but they still lacked the speed, or the computing power required,
in many applications.
Traditional PLCs called upon to perform motion control
often work together with add-on motion controllers
to perform any required motion control functions.
Alright, now let’s move on to the Omron NX/NJ controllers.
Omron has combined the PLC and motion controller into one hybrid device.
The NX/NJ series of controllers can perform traditional PLC control functions
via typical digital and analog I/O field devices
and at the same time perform precise motion control via powerful processors
exhibiting high-speed process execution and data acquisition capability.
Let’s investigate the NX Series.
The base model NX1P2 is a "brick style" controller
that comes complete with a power supply, CPU, and fixed digital I/O.
Expansion digital I/O, as well as analog I/O modules, can be added to this unit.
The NX1P2 is suitable for applications
with 100 - 200 I/O and can control up to 8 axes.
The next model in the NX series is the NX102
which is a very popular mid-range controller.
The NX102 Controller integrates inputs, logic, outputs, safety, and robotics.
The NX102 is suitable for larger applications
having up to 1000 I/O and can handle up to 12 motion axes.
In addition to traditional Ethernet connectivity, the NX102 is IIoT ready
with OPC UA and can easily incorporate database functionality.
The NX701 is Omron’s flagship controller performing large-scale, high-speed,
high-accuracy control
by synchronizing up to 256 axes
with the fastest cycle time of 125 µs.
The NX701 provides warp speed and accurate control
by synchronizing all devices such as vision sensors, servo drives, and field devices.
Next is the NJ Series of motion controllers.
Similar to the NX series,
the NJ series is a machine controller for logic sequence and motion
that includes CPU options for advanced functions such as robotics.
The NJ Series includes the NJ101, NJ301, and NJ501 versions.
Like many of the NX series of controllers,
the NJ501 is IIoT ready
with OPC UA and can easily incorporate database functionality.
The NJ501 is capable of controlling up to 64 a
The NJ controller series has an excellent feature.
NJ controllers are capable of accommodating legacy Omron CJ series I/O.
Upgrading older Omron controllers using new NJ series controllers
is easily accomplished.
You can keep your old CJ series I/O modules
and add them to the NJ series controller bus.
This is a very attractive feature as system upgrade cost is reduced
as well as the elimination of potential installation headaches.
This feature is easily accomplished as the bus connections are the same.
Here’s a typical Unit configuration with an NJ controller and CJ series I/O modules.
The main CPU Rack consists of:
NJ-series CPU Unit
NJ-series Power Supply Unit
CJ-series Basic I/O Units,
Special I/O Units, and CPU Bus Units If expansion is needed, and
An I/O Control Unit in the main CPU rack
that connects to an I/O interface unit in the Expansion Rack.
It’s worth noting here that some CJ series units
cannot be used with an NJ series CPU unit.
Alright, now that we’ve looked at Omron’s lineup of motion controllers,
let’s have a look at the software used to program them.
Sysmac Studio is the Machine Control and Factory Automation used
for programming the NX/NJ series of controllers.
Sysmac Studio combines PLC, motion control, and HMI programming
in one easy-to-use package.
Once purchased,
owners receive lifetime free updates as well as free technical support.
Sysmac Studio also has powerful offline simulation capabilities
meaning you don’t need the hardware to test a program.
A 3D simulator is included as well.
In addition to the full version, a Sysmac Studio Lite version is available
which is capable of programming NX1P2, NX102,
and NJ1 controllers with limited functionality.
You can download a 30-day trial full version of Sysmac Studio here on this page.
We’ll add a link to the description as well.
North American College or university students
can receive six months of free access to Sysmac Studio.
You can apply for free access on this page.
Ok….let’s review what we discussed.
The Omron NX/NJ series has combined the PLC and motion controller
into one hybrid device.
The NX series base model is the NX1P2 controller
and is suitable for applications with 100 - 200 I/O and can control up to 8 axes.
The NX102 with OPC UA capability
is suitable for larger applications
having up to 1000 I/O and can handle up to 12 motion axes.
The NX701 is Omron’s flagship controller
performing large-scale, high-speed, high-accuracy control
by synchronizing up to 256 axes.
Similar to the NX series,
the NJ series is a machine controller for logic sequence and motion
that includes CPU options for advanced functions such as robotics.
The NJ series of controllers are capable of accommodating legacy Omron CJ series I/O.
The NJ501 is IIoT ready with OPC UA
and can easily incorporate database functionality
and is capable of controlling up to 64 axes.
Sysmac Studio is the Machine Control and Factory Automation used
for programming the NX/NJ series of controllers.
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