GB/T 30549-2014General specification for permanent magnet AC servo motor (English PDF)

5.1 Appearance

5.1.1 Technical Requirements The motor surface should be free from rust, dents, scratches, and peeling coating; fastener connections should be secure, and the lettering and content on the nameplate should be clear and legible. It is incorrect, and it must not fall off.

5.1.2 Test Methods Visually inspect the appearance of the motor and its accessories; the results should meet the requirements of 5.1.1.

5.2 Nameplate

5.2.1 Technical Requirements The motor shall have a nameplate, which shall comply with the provisions related to nameplates in GB/T 7346 and the durability provisions in GB 18211.

5.2.2 Test Methods The durability test of the nameplate shall be conducted according to the method specified in

5.2.2 of GB/T 7345-2008, and the results shall meet the requirements of 5.2.1.

5.3 Lead wires or terminals

5.3.1 Technical Requirements The leads or terminals of the motor shall comply with the provisions of

5.3.1 in GB/T 7345-2008.

5.3.2 Test Methods The test shall be conducted according to the method specified in

5.3.1 of GB/T 7345-2008, and the results shall meet the requirements of 5.3.1.

5.4 External shape and installation dimensions

5.4.1 Technical Requirements Manufacturers should specify the shape and mounting dimensions of the motor, which should conform to Figure 2 and Table 1 or according to the product's specific technical specifications. Technical requirements apply. Unless otherwise specified, the manufacturer shall deliver the outline and installation dimension drawings together with the motor.

5.4.2 Test Methods Select the type and accuracy class of measuring tools according to the motor's shape and installation dimensions. Place the motor under normal temperature conditions to allow it to stabilize. After determining the non-working temperature, each item should be measured, and the results should meet the requirements of 5.4.1.

Note. Immediate measurement at room temperature is permitted without affecting measurement accuracy.

5.5 Radial clearance

5.5.1 Technical Requirements When required, the manufacturer should specify the radial clearance and radial force applied to the motor shaft. The radial clearance should conform to the product specifications. Technical requirements.

5.5.2 Test Methods The radial force shall be measured according to the method specified in

5.5.2 of GB/T 7345-2008, and shall comply with the provisions of the product's specific technical specifications. The results should meet the requirements of 5.5.1.

5.6 Axial clearance

5.6.1 Technical Requirements When required, the manufacturer should specify the axial clearance and axial force applied to the motor shaft. The axial clearance should conform to the product specifications. Technical requirements.

5.6.2 Test Methods The axial force shall be measured according to the method specified in

5.6.2 of GB/T 7345-2008, and shall comply with the provisions of the product-specific technical conditions. The results should meet the requirements of 5.6.1.

5.7 Radial runout of shaft extension

5.7.1 Technical Requirements When required, the manufacturer should specify the magnitude of the radial runout of the shaft extension. The radial runout of the shaft extension should conform to Table 2 or be specified by the product manufacturer. Specified by technical conditions.

5.7.2 Test Methods Securely mount the motor horizontally along its axis. Place the measuring head of the micrometer on the shaft extension surface at a distance of approximately 1/3 of the shaft extension length from the end face of the shaft extension. At this point, slowly rotate the motor shaft, and measure the maximum difference within one revolution. This difference is the radial runout of the motor shaft extension, and the result should conform to 5.7.1. Require.

5.8 Radial runout of the flange stop relative to the motor axis

5.8.1 Technical Requirements When required, the manufacturer should specify the magnitude of the radial runout of the flange stop relative to the motor axis. The radial runout should conform to the specifications in Table 3 or the product-specific technical conditions.

5.8.2 Test Methods The radial runout of the flange stop relative to the motor axis shall be measured according to the provisions of

9.3.2 in GB/T 4772.1-1999, and the result shall conform to... Requirements of 5.8.1.

5.9 Runout of the motor flange mounting end face relative to the motor shaft

5.9.1 Technical Requirements When required, the manufacturer should specify the amount of end face runout between the motor flange mounting end and the motor shaft. Motor flange mounting. The end face runout of the end face facing the motor shaft should comply with the provisions of Table 4 or the product-specific technical conditions.

5.9.2 Test Methods The runout of the flange mounting end face to the motor shaft shall be measured according to the provisions of

9.3.3 in GB/T 4772.1-1999, and the result shall meet the requirements. It meets the requirements of 5.9.1.

5.10 Dielectric strength of insulation

5.10.1 Technical Requirements The individual windings of the motor and the windings to the housing should be able to withstand the test voltages specified in Table 5, and there should be no insulation breakdown, arcing, or flashover. Network phenomena. The leakage current should not exceed the values specified in Table 5; the leakage current does not include the capacitive current of the test equipment. The insulation resistance should be measured immediately after the test and should meet the requirements. In accordance with the provisions of 5.11. When repeating this test, the voltage value is 80% of the original test voltage value. The dielectric strength of the insulation of the feedback component shall comply with the requirements of the product's specific technical specifications. The dielectric strength test for the driver-embedded motor is specified in the product-specific technical specifications.

5.10.2 Test Methods The test power supply operates at a frequency of 50Hz, with a voltage waveform approximating a sine wave. The power supply's capacity and output impedance should be sufficient to withstand various loads. There was no significant waveform distortion or significant voltage change. The motor shall be subjected to a test voltage as specified in 5.10.1.The voltage value shall rise slowly from zero (for at least 3 seconds) to the specified value and remain at the specified value. 1 minute. During the entire test, the peak voltage should not exceed

1.5 times the specified effective value, and the fault indicator should be monitored to determine if the motor has any issues. No breakdown discharge or leakage current values were observed. At the end of the test, the test voltage should be gradually reduced to zero to prevent surges. A 1-minute test can be completed in approximately 5 seconds. The test can be used as a substitute, with the test voltage value being the normal value specified in Table

5.Alternatively, a 1s test can be used, but the test voltage value must be the value specified in Table 5. 120%. After the test, measure the insulation resistance according to 5.11.2, and the result should meet the requirements of 5.10.1.

5.11 Insulation Resistance

5.11.1 Technical Requirements The insulation resistance of each independent winding of the motor to the motor housing and between each winding should meet the following requirements. Under normal atmospheric conditions and specified low-temperature conditions, the insulation resistance should not be less than 50 MOmega; Under high temperature conditions, the insulation resistance should not be less than 10 MOmega; Under appropriate humid and hot conditions, the insulation resistance should not be less than 1MOmega. The insulation resistance of the feedback component should comply with the product's specific technical specifications. The insulation resistance test for the driver-embedded motor is conducted by the product manufacturer. Special technical requirements are specified. The voltage value of the megohmmeter used to check the insulation resistance should conform to the specifications in Table 6.

5.11.2 Test Methods Select the appropriate megohmmeter according to the specifications in Table 6, and measure the insulation resistance values of each independent winding of the motor to the casing and between each winding. The values should meet the requirements. Requirements of 5.11.1.

5.12 Direction of Rotation

5.12.1 Technical Requirements Unless otherwise specified, the motor shall rotate in a bidirectional reversible direction, and it shall be specified that when energized in the U, V, W phase sequence, the rotation direction shall be determined from the installation and fitting. The main drive shaft extension end of the surface is viewed from the counterclockwise direction as the positive direction of rotation.

5.12.2 Test Methods The test shall be conducted according to the method specified in the product's specific technical specifications, and the results shall meet the requirements of 5.12.1.

5.13 Difference in rotational speed between forward and reverse directions

5.13.1 Technical Requirements Under no-load conditions, the difference between the forward and reverse speeds of the motor at its rated speed should comply with the provisions of the product's specific technical specifications.

5.13.2 Test Methods With the driver speed loop open and only the driver rotation direction command changed, check the motor's forward and reverse speeds at rated speed under no-load conditions. The difference should meet the requirements of 5.13.1.

5.14 Rated Data

5.14.1 Technical Requirements The rated data of the motor shall comply with the provisions of the product-specific technical conditions.

5.14.2 Test Methods The motor is fixed on a standard test stand, and the test environment should be free from external radiation and airflow. The motor is tested at the speed specified in 5.14.1. When operating at rated torque, the temperature rise should not exceed the requirements of 5.24.1, and its rated power should meet the requirements of 5.14.1.

5.15 Continuous stall data

5.15.1 Technical Requirements The continuous stall data of the motor should comply with the provisions of the product-specific technical conditions.

5.15.2 Test Methods The motor is fixed on a standard test stand, and the test environment should be free from external radiation and airflow. The motor should be operated in a stall state, or according to... Under the product's specific technical specifications, at a certain low-speed operation, the continuous stall torque specified in

5.15.1 is applied, and after a stable temperature rise is achieved, the continuous temperature rise is measured. The stall current should meet the requirements of 5.15.1, and the motor temperature rise should not exceed the provisions of 5.24.1.

5.16 Peak stall data

5.16.1 Technical Requirements The peak stall data of the motor should comply with the product-specific technical specifications.

5.16.2 Test Methods The motor is fixed on a standard test stand, and the test environment should be free from external radiation and airflow. The motor is operated in a stall state, and an application is performed. Operating at the peak stall torque specified in 5.16.1, with the operating time as specified in the product's specific technical conditions, followed by measuring the motor's insulation resistance and reverse torque. The electromotive force constant should meet the requirements of

5.17 Work Area

5.17.1 Technical Requirements The operating area of the motor should comply with the product-specific technical requirements.

5.17.2 Test Methods The motor is fixed on a standard test stand, and the test environment should be free from external radiation and airflow. The continuous operating range test was conducted at three speeds. n0, nN, and nmax. n0 represents zero speed, i.e., the motor is stalled; nN represents the rated speed. Point; nmax is the maximum permissible speed. When the maximum load torque is applied at the above three points, the temperature rise of the motor should not exceed the specification in 5.24.1. The intermittent operating range test was conducted at two points. operating time and torque, and speeds n0 and nmax, according to the product's specific technical specifications. When the manufacturer and user reach an agreement, the test can also be conducted using equivalent torque at a speed agreed upon in the agreement. The temperature rise of the motor should not exceed [a certain value]. The provisions of 5.24.1.

5.18 Back electromotive force constant

5.18.1 Technical Requirements The back electromotive force constant of the motor should comply with the specifications of the product's special technical conditions.

5.18.2 Test Methods Drive the motor to a speed n specified in the product's technical specifications, and observe its waveform with an oscilloscope. It should conform to the product's technical specifications. Regulations. Measure the linear back electromotive force U when the motor's no-load speed is n, and calculate the back electromotive force constant using equation (2). Its value should conform to 5.18.1. Require.

5.19 Static friction torque

5.19.1 Technical Requirements The static friction torque of the motor should comply with the specifications of the product's special technical conditions.

5.19.2 Test Methods With the motor windings open-circuited, a torque is applied to the shaft using a pulley and weight method or other equivalent method. Measurements are taken at five equally spaced points to ensure the motor rotates. The minimum resistance torque required to start the rotation of the component should be measured in both the positive and negative directions, and the maximum value should meet the requirements of 5.19.1.

Note. For motors with slotted armature cores, the measured values include cogging torque.

5.20 Stator line resistance

5.20.1 Technical Requirements The DC line resistance of the motor stator winding should comply with the specifications of the product's specific technical conditions.

5.20.2 Test Methods After the motor has been kept at room temperature for more than 3 hours, measurements are taken using a DC bridge or other instruments that can ensure measurement accuracy, and the readings are converted to 20°C. The stator line resistance should meet the requirements of 5.20.1.

5.21 Rotor moment of inertia

5.21.1 Technical Requirements The moment of inertia of the motor rotor should comply with the specifications of the product's special technical conditions.

5.21.2 Test Methods Appendix B lists the available test methods for the moment of inertia of motor rotors, and Table 7 provides a reference for selecting different methods in Appendix B. When measuring the moment of inertia of a motor rotor, an appropriate measurement method should be selected based on the rotor's structural characteristics. The results should... It meets the requirements of 5.21.1.

5.22 Electrical Time Constant

5.22.1 Technical Requirements The electrical time constant of the motor shall comply with the provisions of the product-specific technical specifications.

5.22.2 Test Methods As shown in Figure 3, a 1000Hz sinusoidal AC power supply is applied to both ends of the motor stator winding. The voltage is adjusted to ensure the current reaches the product's specific technical requirements. According to the technical specifications, measure the active power, slowly rotate the rotor, and find the locations of the maximum and minimum inductance values respectively, and then apply the formula... (3) Calculate the maximum inductance Lmax and minimum inductance Lmin between each pair of phase lines, and then use these to calculate the average inductance Lav. Alternatively, its... He used an equivalent method to measure inductance.