Hunan Siemens servo motor repair and replacement encoder malfunction - can be fixed on the same day

Hunan Siemens servo motor repair and replacement encoder malfunction - can be fixed on the same day,Selection calculation

1、 Confirmation of rotational speed and encoder resolution.

2、 Conversion of load torque on motor shaft and calculation of acceleration and deceleration torque.

3、 Calculate the inertia of the load and match the inertia. Taking Yaskawa servo motor as an example, the inertia matching of some products can reach50The smaller the actual size, the better for accuracy and response speed.

4、 The calculation and selection of regenerative resistance, for servo, generally2kw以上，要外配置。

5、 Cable selection, encoder cable twisted pair shielding, for Japanese products such as Yaskawa servo, encoder value is6Core, incremental is4Core.

Hunan Siemens servo motor repair and replacement encoder malfunction - can be fixed on the same day,Braking method

Users often confuse the functions of electromagnetic braking, regenerative braking, and dynamic braking, and choose the wrong accessories.

The dynamic brake is composed of dynamic braking resistors, which shorten the mechanical feed distance of the servo motor through energy consumption braking in case of faults, emergency stops, or power outages.

Regenerative braking refers to the energy generated by the braking of a servo motor during deceleration or parking, which is fed back to the DC bus through an inverter circuit and absorbed by a resistance capacitance circuit.

Electromagnetic braking is a mechanical device that locks the shaft of a motor.

The difference between the three:

(1)Regenerative braking must only be effective when the server is working normally, and the motor cannot be braked in case of faults, emergency stops, power outages, and other situations. Dynamic brakes and electromagnetic brakes do not require power supply during operation.

(2)The regenerative braking system operates automatically, while the dynamic and electromagnetic braking systems require external relay control.

(3)Electromagnetic braking is generally used inSVTheOFFStart later, otherwise it may cause amplifier overload, and dynamic brakes are generally usedSVTheOFFOr start after the main circuit is powered off, otherwise it may cause the dynamic braking resistor to overheat.