Yaskawa Sigma II Series NS300 DeviceNet Application Module Deep Technical Guide

5.2 EDS file

The EDS file is the "electronic ID card" of the DeviceNet device. When using configuration tools such as DeviceNet Manager to scan the network, the corresponding EDS file must be imported.

File name: NS300.Eds (Standard Edition) or NS300E.eds (RoHS Edition).

Access: You can download it from the official website of ODVA or Yaskawa Electric. The EDS file contains information such as the parameter list and I/O data format of the device, which is crucial for the upper computer to recognize and control the NS300 module.

Trial operation and maintenance

6.1 Precautions for Trial Operation

Before connecting the load for trial operation, a no-load test must be conducted.

Inertia matching: The parameter Pn103 (load inertia ratio) is crucial. When conducting no-load testing, it must be set to 0 (factory default value). If this parameter is set incorrectly, the motor may experience oscillation or overshoot.

Emergency stop circuit: Before running with load, it is necessary to confirm the effectiveness of the emergency stop button to prevent equipment damage or personnel injury caused by sudden failures.

6.2 Maintenance Inspection

Servo drives are static sensitive equipment and require extra care during maintenance:

Discharge waiting: After power failure, it is necessary to wait for at least 5 minutes until the internal capacitor is discharged before touching the internal circuit.

Environmental inspection: Regularly check the temperature, humidity, dust accumulation, and operation of the cooling fan inside the control cabinet.

EMC Directive Compliance Measures

Equipment sold or used in the European market must comply with the EMC Directive (Electromagnetic Compatibility). The NS300 module has taken into account EMC requirements in its design, but the final compliance of the system depends on installation quality.

7.1 Cable shielding treatment

DeviceNet cable: A dedicated DeviceNet cable must be used.

Full loop encoder cable (CN4): A twisted pair shielded cable must be used and connected to a designated type of connector (such as Molex 54306-2011).

7.2 Application of magnetic rings and wire clamps

Ferrite magnetic ring: Magnetic rings (such as ESD-SR-25) must be installed near the main station and servo driver end of the DeviceNet communication cable, as well as near the servo end of the fully closed-loop encoder cable. Magnetic rings can effectively suppress high-frequency common mode noise.

Cable clamps: The shielding layer must be fixed and grounded through conductive metal clamps. The installation surface of the fixture needs to remove the paint to ensure good electrical connection.

7.3 Wiring Examples

In a typical compliant wiring scheme, the incoming power supply needs to pass through a noise filter, the power line between the servo driver and the motor needs to use shielded wire and be grounded at both ends, and the communication line needs to pass through a magnetic ring on the driver side and be grounded using a dedicated wire clamp. This three-dimensional shielding measure creates an electromagnetic safe operating environment.