Description
Delivering rapid processing capabilities for high-performance automation, the Omron NX701-1620 provides execution of complex motion and database logging algorithms directly within the controller core. This heavy-duty system controller acts as the central command unit for large-scale production facilities, synchronizing high-speed sequence programs and multi-axis trajectory profiles. By integrating native direct SQL database connectivity and an embedded OPC-UA server, it bridges the gap between the plant floor and IT-level enterprise systems without requiring gateway PCs or specialized middleware.
Features
- Direct synchronization of up to 128 physical motion axes for complex electronic gearing and camming applications.
- Ultra-fast cycle execution with a primary task cycle time of 0.125 ms.
- Embedded DB client function enables real-time logging to Microsoft SQL, Oracle, MySQL, PostgreSQL, and Firebird servers.
- Built-in industrial network protocols including EtherCAT Master and dual EtherNet/IP ports.
- Massive memory allocation with 80 MB program capacity and 260 MB variables memory.
Applications
- High-speed rotary packaging and form-fill-seal lines.
- Multi-axis robotic handling and assembly cells.
- Traceability-heavy pharmaceutical or automotive assembly lines requiring direct database tracking.
- High-precision semiconductor fabrication tool automation.
Technical Specifications
| Parameter |
Specification |
| Manufacturer |
Omron |
| Model Number |
NX701-1620 |
| Controller Series |
Sysmac NX7 |
| Task Cycle Time |
0.125 ms |
| Program Memory |
80 MB |
| Variables Memory |
260 MB |
| Max. Controlled Axes |
128 Synchronous Axes |
| Communication Ports |
EtherCAT (Master), EtherNet/IP (2 Ports), Ethernet TCP/IP |
| Local I/O Bus |
NX I/O Bus System |
| Net Weight |
0.88 kg |
| Shipping Weight |
3.00 kg |
Connections and Interfaces
| Interface Port |
Functional Protocol Assignment |
| Port 1 (EtherNet/IP) |
Host communications, HMI interface, Tag Data Link networking, Sysmac Studio tool interface. |
| Port 2 (EtherNet/IP) |
Secondary industrial network ring, direct SQL client execution, or OPC-UA server communications. |
| Port 3 (EtherCAT) |
Deterministic servo drive control, distributed I/O couplers, high-speed remote nodes. |
| SD Card Slot |
Logging spools, memory card storage, OS firmware updates, and system recovery. |
Empirical Engineering Insights
Alternative Models & Compatibility
The NX701-1620 is configured within the Sysmac Studio platform. It replaces smaller controllers like the NX701-1600 (which is limited to 64 axes) in scenarios where mechanical expansions demand increased servo synchronization. Ensure that all program files are recompiled in Sysmac Studio version 1.10 or higher when converting code from older NX-series platforms.
Application Pitfalls & Engineering Notes
When utilizing the direct SQL connection feature, ensure your database spooling configuration is active. If the destination database server goes offline, the controller utilizes internal memory blocks as a buffer. If the outage exceeds the buffer capacity, data overwrite warnings occur. Always set up appropriate diagnostic alarms to monitor SQL transaction queues.
Commissioning & Wiring Tips
High-density multi-axis EtherCAT loops require high-quality STP Cat5e (or better) industrial Ethernet cables. Poorly shielded or loose cabling will introduce microsecond jitter, resulting in intermittent packet loss and subsequent controller axis synchronization faults. Route network communication wires away from high-power servo motor cables.
Installation Guidelines
CRITICAL WARNING: De-energize all primary and auxiliary 24 VDC power supplies before mounting, demounting, or wiring the controller. Failure to disconnect power during installation can lead to internal circuit damage, arc-flashes, or unexpected equipment movement.
1
Align the back DIN rail hook of the controller onto the standard 35 mm DIN track, pushing until it clicks securely into place.
2
Securely connect the functional ground wire to a low-impedance grounding point, ensuring adequate noise immunity.
3
Wire the designated 24 VDC power supply to the unit's supply terminals, verifying correct polarity before applying power.