JB/T 10275-2001 General technical requirements for AC spindle drive units for CNC machine tools
Some standard content:
JB/T10275-2001
CNC machine tool AC spindle drive unit has been widely used in the field of CNC machine tool spindle control. In terms of classification, according to its control characteristics, it can be divided into analog control, full digital control and digital-analog hybrid control; according to its closed loop characteristics, there are only speed closed loops, and there are both speed closed loops and position closed loops. They are of various varieties, but there are no corresponding international standards and foreign advanced national standards. The purpose of this standard is to make domestic products approach the international level and guide industry production. This standard is compiled according to the requirements of JB/T8832-1999 "General Technical Conditions for Machine Tool Digital Control Systems", with reference to product samples of internationally renowned companies and combined with the production situation of Chinese enterprises. Appendix A and Appendix B of this standard are both standard appendices. This standard is proposed and managed by the National Industrial Automation System and Integration Standardization Technical Committee. The drafting unit of this standard: Beijing Machine Tool Research Institute. The main drafter of this standard: Li Chengzhao.
This standard was first released in June 2001.
This standard is entrusted to Beijing Machine Tool Research Institute for interpretation. 634
1 Scope
Machinery Industry Standard of the People's Republic of China
AC spindle drive unit for numerical control machine tools
General technical conditions
General specification for AC spindle drive unitJB/T 10275—2001
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of AC spindle drive units for numerical control machine tools.
This standard is applicable to various AC spindle drive units and semiconductor frequency conversion speed regulation devices for closed-loop control of AC spindle motors for various types of numerical control machine tools. AC spindle drive units for other purposes can also be implemented by reference. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB191-2000 Packaging storage and transportation pictorial mark (eqvISO780:1997) Test Ca: Steady damp heat test method
GB/T2423.3:1993 Basic environmental testing procedures for electric and electronic products (eqvIEC 60068-2-3:1984)
GB/T2423.5-1995 Environmental testing for electric and electronic products Part 2: Test methods Test Ea and guidance: Shock (idt 1EC 60068-2-27:1987)
GB/T2423.10-1995 Environmental testing for electric and electronic products Part 2: Test methods Test Fc and guidance: Vibration (sinusoidal) (idt IEC 60068-2-6:1982)
GB4208—1993 Enclosure protection degree (IP code) (eqvIEC529:1989)GB/T4588.2--1996 Sectional specification for single-sided and double-sided printed boards with metallized holes (idtIEC/PQC90:1990)GB/T4588.4—1996 Sectional specification for multilayer printed boards (idtIEC/PQC91:1990)GB4824:1996
Measurement methods and limits for electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipmentGB/T5 080.7--1986 Equipment reliability test Failure rate and mean time between failures under constant failure rate assumptions Verification test plan (idtIEC605-7:1978)
Industrial machinery electrical equipment - Part - General technical conditions (eqvIEC204-1:1992) GB/T5226.1-1996
GB157601995 General technical conditions for safety protection of metal cutting machine tools GB17625.1-1998 Limits of harmonic currents emitted by low-voltage electrical and electronic equipment (equipment input current per phase ≤16A) (eqv IEC 61000-3-2:1995)
GB/T17626.2-1998 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test (idt IEC 61000-4-2:1995)
GB/T17626.4—1998 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test (idt IEC61000-4-41995)
GB/T17626.5—1999 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test
(idt IEC 61000-4-5:1995)
Approved by China Machinery Industry Federation on June 4, 2001, implemented on October 1, 2001
JB/T10275—2001
GB/T17626.11—1999 Electromagnetic compatibility test and measurement technology Voltage dip, short interruption and voltage variation immunity test (idt IEC 61000-4-11:1994)
IEC61491：1995 Real-time serial communication data link between control and drive devices of electrical equipment of industrial machinery 3 Definitions
This standard adopts the following definitions.
3.1 AC spindle drive unit
When the CNC machine tool uses the AC spindle motor as the main transmission component, the corresponding AC spindle motor control device is the AC spindle drive unit, hereinafter referred to as the drive unit. 3.2 AC spindle drive device
The AC spindle drive unit and the AC spindle motor are connected together to form the AC spindle drive device, hereinafter referred to as the drive device. 3.3 Braking function and starting and braking time
3.3.1 Braking function
The braking function of the motor is to quickly release the mechanical energy on the motor shaft so that the motor can quickly slow down or stop. The commonly used braking methods of the motor include feedback braking, energy consumption braking and other methods. 3.3.2 Starting time
The starting time refers to the time from the drive device receiving the maximum speed command signal to the spindle motor reaching 95% of the maximum speed under no-load conditions.
3.3.3 Braking time
The braking time refers to the time from the drive device receiving the braking command signal to the spindle motor reaching zero speed under no-load and maximum speed conditions.
3.4 Positioning function
In order to change and measure tools, the spindle must be able to stop accurately and keep it at a pre-specified position. 3.5 Servo axis function
The function of putting the spindle motor in the working state of the position servo loop. 3.6 Rated current
The maximum current that the drive unit can continuously output under specified conditions. 3.7 Rated voltage
The maximum voltage that the drive unit can output under rated current. 3.8 Speed change rate (static error rate)
When the load of the drive device increases from no load to the maximum load at the speed specified in the continuous working area of the motor at a given speed: the relative value of its speed change is called the speed change rate (static error rate) S at the speed. When expressed as a percentage: S(%) = n= n × 100%
Where: na—--speed at no load;
n-speed at load.
（1）
Speed range (speed ratio)
Speed range D refers to the ratio of the maximum speed nmax and the minimum speed nmin that can be achieved when the maximum load allowed is applied to the motor shaft in the speed regulation system and the speed change rate S is not greater than the specified value. The speed range is calculated using formula (2) D -- nmx
3.10 Constant power range (constant power speed ratio) Constant power range refers to the ratio of the maximum value to the minimum value of the speed change range allowed when the drive device maintains the rated power output.
3.11 Rated output capacity
JB/T 10275-2001
The maximum power that the drive unit can continuously output at rated voltage. 3.12 Efficiency
The ratio of the output power to the input power of the drive unit under rated working conditions. That is: P
Where: efficiency;
P-drive unit input power;
P.-drive unit output power.
4 Technical requirements
4.1 Environmental adaptability
The drive unit specified in this standard can work normally under the following conditions. 4.1.1 Climate and environmental adaptability
The working climate and environmental conditions of the drive unit and the climate and environmental conditions for purchase, storage and transportation are shown in Table 1. Table 1
Environmental temperature
Relative humidity
Atmospheric pressure
4.1.2 Altitude
Working climate conditions
0~40℃
30%~95% (non-condensing)
86-106 kPa
Storage and transportation climate conditions
40~+55℃
95%(40)
86--106 kPa
When the altitude does not exceed 1000m, the drive unit should be able to guarantee various technical indicators. When the altitude exceeds 1000m, the weakening of the air cooling effect needs to be considered. At this time, the design and use should be carried out according to the agreement between the manufacturer and the user. 4.1.3 Vibration and impact
The drive unit should be able to withstand the vibration and impact tests specified in 5.22 and 5.23. After the test, the drive unit should not have mechanical damage, deformation, and looseness of the fastening parts (the fastening parts are sealed with paint dots). The electrical performance is not affected after power is turned on and it should be able to work normally. Note: When the vibration frequency of the installation foundation is the same as the resonance frequency of the drive unit and obvious resonance occurs, vibration reduction measures should be taken for the drive unit. 4.1.4 AC input power supply
The drive unit should be able to work normally under the following AC input power supply conditions. 4.1.4.1 The input power supply voltage value is 0.85~~1.1 times the rated input voltage. 4.1.4.2 The frequency fluctuation does not exceed ±1Hz. 4.2 Electrical and mechanical structure
4.2.1 Structural design
The safety of the drive unit structure shall comply with the requirements of 7.1 and 7.2 of GB15760-1995, and shall ensure safety, reliability and convenient maintenance during installation, commissioning, use and maintenance. The structure is firm and should be able to withstand vibration tests under specified conditions. 4.2.2 Appearance
The surface is flat, without bumps, scratches, seams and deformation, and the coating and plating should not have bubbles, flow marks and rust. 4.2.3 Protection level
The protection level of the drive unit installed in the electrical cabinet shall not be less than IP2X. The housing of the independently installed drive unit shall have sufficient ability to prevent the intrusion of solid objects and liquids from the outside, and the protection level shall not be less than IP54. The protection level shall be specified in the special technical conditions.
4.3 Basic requirements for components and accessories
4.3.1 Components, devices, auxiliary parts and components Components, devices, auxiliary parts and components shall comply with the provisions of the relevant standards and installation regulations. 4.3.2 Printed circuit board
JB/T10275—2001
The printed circuit board shall comply with the provisions of Chapter 5 of GB/T1588.2-1996 and Chapter 5 of GB/T4588.4-1996. 4.3.3 Colors of indicator lights and buttons
The colors of indicator lights and buttons shall comply with the provisions of Chapter 10 of GB/T5226.1-1996. 4.3.4 Color of wires and busbars
The color of wires and busbars shall comply with the provisions of Chapter 15 of GB/T5226.1--1996. 4.3.5 Crimping, welding and wrapping
Crimping, welding and wrapping should ensure long-term good conductivity, and the wire diameter and wiring of the connecting wires shall comply with the provisions of Chapters 14 and 15 of GB/T5226.1--1996. 4.4 Electrical performance requirements
4.4.1 Insulation resistance
Except for the circuits in the drive unit that are not allowed to be tested with high voltage, the insulation resistance measured when 500Vd.C. is applied between the test point (including the power supply circuit) and the protective grounding terminal shall not be less than 20M2. The insulation resistance after the constant damp heat test shall not be less than 1MQ2. When the drive unit is powered by a transformer (the transformer is part of the drive unit, but is not integrated with the drive unit), the insulation resistance of the transformer part shall be measured in accordance with relevant regulations. 4.4.2 Withstand voltage
The power circuit and protective grounding in the drive unit should be able to withstand a withstand voltage test of at least 1 minute. The applied test voltage (effective value) should be twice the rated power supply voltage of the drive unit or 1000V (whichever is greater). Insulation breakdown or arcing should be prevented during the test, and the effective value of the leakage current should not be greater than 5mA. The insulation resistance measured immediately after the test should meet the requirements of 4.4.1. During factory inspection, the 1-minute withstand voltage test can be replaced by a 5-second test, and the test voltage remains unchanged. Components that are not suitable for high-voltage testing can be disconnected during the test. The drive unit is powered by a transformer (the transformer is part of the drive unit, but is not integrated with the drive unit). The transformer part should be subjected to withstand voltage tests in accordance with relevant regulations. 4.4.3 Rated voltage
The rated voltage of the drive unit should be specified in the special technical conditions. 4.4.4 Rated current
The rated current of the drive unit should be specified in the special technical conditions. 4.4.5 Rated output capacity
The rated output capacity of the drive unit shall be specified in the special technical conditions, and shall be selected from the following data in priority: 2.24.3.15.4,6.3,9,14.18.35.5,40,50.63,80,90,112,140.160.200,250,280 kVA 4.4.6 Speed change rate
The speed change rate at the lowest speed shall be specified in the special technical conditions. 4.4.7 Speed regulation range (speed regulation ratio)
The speed regulation range shall be greater than 100:1, and shall be greater than 1000:1 in the case of requiring servo axis function. They shall be specifically specified in the special technical conditions.
4.4.8 Constant power range (constant power speed ratio) The constant power range shall be specified in the special technical conditions, but shall not be less than 3:14.4.9 Additional functions
Additional functions such as positioning and servo axis can be provided according to user needs and meet the performance indicators specified in the special technical conditions4.4.10 Efficiency
Efficiency shall be specified in the special technical conditions.
4.4.11 Braking function and starting and braking time The braking function and starting and braking time of the drive unit shall be specified in the special technical conditions. 4.4.12 High and low temperature operation
The drive unit shall be able to operate continuously and reliably under the working climate conditions specified in 4.1.1 and the input power conditions specified in 4.1.4638
4.4.13 High and low temperature storage
JB/T10275--2001
The performance and appearance of the drive unit shall not change after the high and low temperature storage test. 4.4.14 Steady damp heat
When the special technical conditions require it, the drive unit shall be able to withstand a 2-day steady condensation test with a severity level of (402)°C and a relative humidity of 93%-95%. After the test, the insulation resistance is measured in the box and shall comply with the provisions of 4.4.1. The drive unit shall have no obvious deterioration in appearance quality and shall be able to work normally. 4.4.15 Protection
4.4.15.1 The drive unit shall be provided with overcurrent, overvoltage, undervoltage and phase loss protection. 4.4.15.2 The drive unit shall be provided with short-circuit protection. 4.4.15.3 The drive unit shall be provided with overspeed and stall protection. 4.4.15.4 The drive unit shall have an overload protection function, and its current-time relationship diagram or table shall be specified in the special technical conditions.
4.4.16 Interface
4.4.16.1 Drive unit input signal
The drive unit input signal can be an analog input signal, the signal is 0.10V DC voltage: the input impedance should not be less than 10k2. It can also be a data input signal. In the absence of special provisions, the data input signal can refer to the provisions of IEC61491. 4.4.16.2 The drive unit should have the following basic exchange signals with the numerical control device: a) Allow/block work (input);
b) Rotation direction (input);
() Speed command (input);
d) Ready (input);
e) Speed reached (output);
f) Fault (output);
g) Feedback signal (input/output).
4.4.17 Protective grounding
The drive unit should be equipped with a protective grounding terminal with a PE mark. The power line N should not be connected to the PE terminal inside the drive unit. The grounding wire connection inside the unit should comply with the requirements of Chapter 8 of GB/T5226.1-1996. The continuity requirements of the protective grounding circuit should meet the requirements of 20.2 of GB/T5226.1-1996. 4.4.18 Immunity
The drive unit should have the ability to resist interference from the power supply network or external electromagnetic fields, and can work normally under the conditions specified in (GB/T17626.2, GB/T17626.4, GB/T17626.5 and GB/T17626.11). 4.4.18.1 Electrostatic Discharge Immunity
When the drive unit is in operation, an electrostatic discharge test is conducted on all parts that are frequently touched by the operator. The contact discharge voltage is 6kV, and the air discharge voltage is 8kV. The drive unit should be able to work normally during the discharge test. If the drive unit does not have a housing, an indirect discharge test is used. 4.4.18.2 Electrical Fast Transient Pulse Group Immunity When the drive unit is in operation, a pulse group with a peak value of 2kV and a repetition rate of 5kHz is added between the AC power supply terminal and the protective grounding terminal, or a pulse with a repetition rate of 1kV and a repetition rate of 5kHz is added to the I/signal, data and control port cables using a coupling clamp: the drive unit should be able to work normally.
4.4.18.3 Surge Immunity
Superimpose a surge voltage with a peak value of 1kV on the AC input power supply and add a surge voltage with a peak value of 2kV on the AC input power supply to the ground terminal, and the drive unit should be able to work normally.
4.4.18.4 Voltage sag and short interruption immunity The drive unit shall be able to operate normally when the AC input power supply is interrupted for 3ms at any time within any cycle, and when the AC input power supply is temporarily reduced for 500ms at any time, and the amplitude is reduced to 70% of the rated value, and the interval between two tests is not less than 10s. 639
JB/T 10275—2001
4.4.19 Reliability
The reliability of the drive unit is measured by the mean time between failures MTBF. The MTBF of the drive unit shall not be less than 10000h, and the IL value shall be specified in the special technical conditions. 4.4.20 Electromagnetic interference
When the special technical conditions require, the conducted disturbance voltage and radiated disturbance value of the power supply end of the drive unit shall not exceed the limit value of Class A equipment of Group 1 specified in Chapter 6 of G34824—1996. The harmonic current injected into the public low-voltage power supply system should not exceed the limit value of Class A equipment specified in Chapter 7 of GB17625.1-1998. 5 Test method
5.1 Test conditions and requirements
5.1.1 Test power supply
Unless otherwise specified, the test power supply should comply with the following provisions: a) The power supply voltage should be 0.85~1.1 times the rated input voltage; b) The difference between the frequency of the test power supply and the rated frequency should be within the range of ±1Hz of the rated frequency. 5.1.2 Measuring instruments
During the test, the accuracy of the electrical measuring instruments used shall not be lower than Class 0.5 (except for megohmmeters), the accuracy of current transformers shall not be lower than Class 0.2, the error of thermometers shall not be greater than ±1°C, the accuracy of digital speed measuring instruments (including decimal frequency meters) shall not be lower than 0.1%±1 digit,
When selecting instruments, the measured values shall be within the range of 20%~95% of the instrument range. The equipment used for electromagnetic interference measurement and harmonic current measurement shall comply with the requirements specified in GB4824 and GB17625.1. 5.1.3 Test equipment
The drive unit test shall include the drive unit and the spindle motor and the sensors attached to the motor. The voltage regulator, signal setting unit or CNC device and power distribution circuit that must be used in the test are not subject to inspection. During the entire test process, the instrument allows appropriate adjustment of the parameters and parameter setting values of the adjustable links. 5.1.4 Test conditions
The normal operation of the drive device during or after the tests of climate and environmental adaptability, vibration, shock, high and low temperature continuous operation, etc. shall be checked under no-load operation. The inspection content shall include the range from the lowest speed to the highest speed of the motor. The device shall not have any faults. 5.1.5 Environment
The inspection and test of various technical indicators in this standard shall generally be carried out under the conditions specified in Table 2 unless otherwise specified for the working environment conditions.
Ambient temperature
Relative humidity
Atmospheric pressure
Test method
15~35℃
45%~75%
86~-106 kPa
5.2 Electrical and mechanical structure
The drive unit shall be checked by the self-test method to comply with the provisions of 4.2 and 4.3 and the requirements of 4.4.16 and 4.4.17. 5.3 Insulation resistance inspection
5.3.1 Circuit connection for insulation resistance inspection
a) The input and output terminals of the control circuit and the power supply terminals and common terminals should be short-circuited. The control unit, board and components that are not allowed to withstand high voltage according to the design regulations can also be disconnected. b) The insulation resistance inspection test is not performed between the circuits coupled by capacitors. When it is necessary to test the insulation resistance between the capacitor-coupled circuit and the internal equipment, the capacitor-coupled circuit should be temporarily short-circuited with a shorting wire. 640
5.3.2 Insulation resistance inspection test
JB/T 10275--2001
Use a 500√ megohmmeter with an accuracy of 1.0 to connect the power input terminal of the drive unit (the input terminal is not connected to the power grid, and the power switch and contactor in the unit are in the on position) and the protective grounding terminal. After applying the test voltage for 1 minute, read the insulation resistance value, which should comply with the provisions of 4.1.1.
During the test, the contact points should be ensured to have reliable contact, and the insulation resistance between the test leads should be sufficient to ensure accurate readings. 5.4 Withstand voltage test
The circuit connection of the withstand voltage test is the same as 5.3.1. The test is carried out between the power input terminal of the drive unit (the input terminal is not connected to the power grid, but the power switch and contactor in the unit are placed in the on position) and the protective grounding terminal. The test voltage is a 50Hz sine wave, and the transformer capacity used for the test should be no less than 500VA. The test voltage should start from zero or no more than half of the full value, and then rise evenly or gradually at a step of no more than 5% of the full value. The time for the voltage to rise from half value to full value should be no less than 10s, and then maintained for 】min. After the test, the voltage is gradually reduced to zero. For factory inspection, the 1min test can be replaced by a 5s test, and the test voltage remains unchanged. The test results should comply with the provisions of 4.4.2. During the test, the control unit, board and components that are not allowed to withstand high voltage according to the design regulations should be disconnected. 5.5 Rated voltage test
Under the specified working environment conditions and rated current, measure the maximum voltage of the continuous output of the driver single light, which shall comply with the provisions of 4.1.3. 5.6 Rated current test
Under the specified working environment conditions, gradually increase the load until the continuous output current reaches the specified value of 4.4.4, and the drive unit can run continuously for a long time (about 2 hours) without any alarm. 5.7 Rated output capacity test and efficiency test Under the specified working environment conditions and rated speed, gradually increase the load until the continuous output current reaches the specified value of 4.4.4. The drive unit can run continuously for a long time (about 2 hours) without overheating alarm. Measure the output voltage and output current of the drive unit, and calculate the output capacity of the driver single light accordingly, which shall comply with the provisions of 4.4.5. At this time, use a power meter to measure the input power and output power of the drive unit. Calculate the efficiency of the drive unit according to formula (3) and it shall comply with the provisions of 4.4.10. 5.8 Speed change rate test
Read the no-load speed as n at the lowest speed command, then gradually increase the load until the maximum load value at this speed in the continuous working range of the motor is reached, and measure the speed change rate as n1, and then calculate the speed change rate according to formula (1), which shall comply with the provisions of 4.4.6. 5.9 Speed regulation range test
When the maximum torque allowed at the highest speed is applied to the motor shaft of the drive device and the speed change rate is not greater than the specified value, measure the maximum speed nmx and the minimum speed nmin that the motor can reach, and then calculate the speed regulation range according to formula (2), which shall comply with the provisions of 4.47. 5.10 Constant power range test
While maintaining the rated output power of the motor, the drive device adjusts the motor speed, measures the maximum speed and the minimum speed of the motor, and calculates the speed regulation range according to formula (2), which shall comply with the provisions of 4.4.8. 5.11 Additional function test
This test shall be carried out only when required by the special technical conditions. 5.11.1 Positioning function test
The drive device and the numerical control device (or other similar devices) constitute a test system, and the numerical control device (or similar device) sends a positioning command to the input end of the drive device. Use a high-resolution, high-precision angle sensor and an electronic timer to check the positioning accuracy and positioning speed of the motor shaft, which should comply with the provisions of 4.4.9. 5.11.2 Servo axis function test
The drive device and the numerical control device (or other similar devices) constitute a test system, let the drive device work in the servo mode, check the position error of the numerical control device and the position of the motor shaft, in order to determine the follow-up accuracy and position accuracy of the drive device, which should comply with the provisions of 4, 4.9.
5.12 Braking function test
When the drive device is operating normally under rated load, give the drive device an operation end command or emergency stop command, and observe the stop response speed of the motor. Then give the operation command again, and the drive device should be able to work normally. 641
5.13 Starting and braking time test
5.13.1 Starting time test
JB/T10275--2001
Put the drive device under no-load conditions, input the maximum speed command step signal at the input end of the drive device, and use a storage oscilloscope to simultaneously record the speed command step signal and the speed change curve of the spindle motor shaft. The time from the step signal command to the motor shaft speed reaching 95% of the maximum speed is the required starting time, which should comply with the provisions of 4.4.11. 5.13.2 Braking time test
Put the drive unit in no-load and highest speed conditions, input the braking command step signal at the input end of the drive unit, and use a storage oscilloscope to simultaneously record the speed command step signal and the speed change curve of the spindle motor shaft. The time from the input of the braking command to the motor shaft speed dropping to zero speed is the required braking time, which should comply with the provisions of 4.4.11. 5.14 High and low overflow operation test
5.14.1 High temperature operation test
Put the drive unit in a high temperature box, and raise the temperature in the box to (40±2)℃. After reaching thermal equilibrium (generally speaking, no less than 30 minutes), the motor is operated at no-load at rated speed, and the temperature in the box is kept constant for 48 hours. The operating conditions (input voltage and operating time) are cycled according to the provisions of Table 3. The drive unit should be able to work normally. During factory inspection, it is allowed to run continuously for 4 hours at the rated input voltage only. The drive unit should be able to work normally.
Input power supply voltage
Running timeh
5.14.2 Low temperature running test
Rated value
1.1 times rated value
Rated value
0.85 times rated
Place the drive unit in a low temperature box and lower the temperature inside the box to (0±2)℃. After reaching thermal equilibrium (generally speaking, not less than 30min), keep the temperature inside the box constant and make the motor run continuously for 4h at rated speed (no load). The drive unit should be able to work normally. 5.15 High and low temperature storage test
5.15.1 High temperature storage test
Place the drive unit in a high temperature box, and raise the temperature in the box to (55±2)℃. After reaching thermal equilibrium (generally speaking, not less than 30min), keep the temperature in the box constant. Place the test unit for 4h without power. After the test period expires, gradually lower the temperature to normal atmospheric conditions and place it under this condition for 4h. The cooling time in the box is not counted as the placement time. Then check the appearance and power on. The unit should be able to work normally. 5.15.2 Low temperature storage test
Place the drive unit in a low temperature box, and lower the temperature in the box to (40±2)℃. After reaching thermal equilibrium (generally speaking, not less than 30min), keep the temperature in the box constant. Place the test unit for 4h without power. After the test period expires, gradually raise the temperature to normal atmospheric conditions and place it under this condition for 4h. The heating time in the box is not counted as the placement time. Then check the appearance and power on. The unit should be able to work normally.
5.16 Steady-state damp heat test
Place the drive unit in a damp heat test chamber and conduct a steady-state damp heat test in accordance with the provisions of GB/T2423.3. The severity level shall be in accordance with the provisions of 4.4.14. After the test, it shall meet the requirements of 4.4.14. 5.17 Protection performance test
5.17.1 Power supply fault protection
The power supply fault (overvoltage, undervoltage, phase loss) protection test of the drive unit is carried out under no-load conditions. Connect an adjustable power supply to the power input terminal of the drive unit, and slowly adjust the output voltage of the adjustable power supply to make it higher or lower than the allowable voltage (i.e. overvoltage or undervoltage) of the drive unit until overvoltage or undervoltage protection occurs. After restoring the normal working voltage, restarting the drive unit should be able to work normally. When the drive unit suddenly opens any phase of the power supply during normal operation (when it is in an abnormal working state), the drive unit should be effectively protected and shall not be damaged. After the normal wiring is restored, the drive unit should be able to work normally after restarting. 5.17.2 Functional Fault Protection
When the drive unit is working normally, the speed feedback signal or the thermal switch signal is suddenly disconnected, the drive unit should be protected and stop working. After the normal wiring is restored, the drive unit should be able to work normally after restarting. 642
5.17.3 Short-circuit protection
JB/T 10275--2001
The short-circuit protection test of the drive unit is carried out under no-load conditions and rated voltage. While gradually increasing the speed, make any two phase lines of the motor suddenly short-circuit until the drive unit has short-circuit protection. After the normal wiring is restored, the drive unit should be able to work normally after restarting. 5.17.4 Overload protection test
The overload protection test should be checked and tested according to the data of the overload protection current-time relationship table of the product-specific technical conditions. If the special technical condition instrument gives a current-time curve, at least two points of the maximum overload capacity, overload 50% and overload 10% should be taken for inspection and testing.
During the test, the motor speed is set at 0.01nmx and the actual current value is monitored. When the load is increased to the specified overload capacity, the time is measured with a stopwatch and the time of overload protection action is recorded, which should comply with the provisions of the special technical conditions. Factory inspection allows only the overload protection at the maximum overload capacity point to be checked, and it is allowed to use the method of motor rotor blocking without using loading equipment to make the current reach the maximum overload current value. 5.18 Connection test
Check that the drive unit should have the "basic exchange signal with the numerical control device" specified in 4.4.16, and the input impedance of the drive unit should meet the requirements of 4.4.16.
After the drive device is powered on, the "ready" contact output signal of the drive unit should be closed. When the 10V signal is input, the spindle motor should be at the highest speed of stopping or reversing. At this time, the "blocking" signal is input and the motor should stop. 5.19 Protective grounding circuit continuity test
Test equipment and basic parameters:
Protective grounding circuit continuity tester (PELV) test error 0.05V
Use PE1.V power supply (low voltage with a frequency of 50Hz or 60Hz, current greater than 10A, time greater than 10$), between the PE terminal of the test product and the different points of the protective grounding circuit components, the measured voltage drop between the PE terminal and each test point should not exceed the value specified in Table 4.
Minimum effective cross-sectional area of the tested protective conductor branch mm
5.20 Immunity (electromagnetic compatibility) test Maximum measured voltage drop
Immunity (electromagnetic compatibility) test includes electrostatic discharge immunity, electrical fast transient pulse group immunity, surge immunity and voltage sag and short-time interruption test. For details of the test method, please refer to Appendix A (Appendix of the standard). The test results shall comply with the provisions of 4.4.18. 5.21 Reliability test
For details of the reliability test method, please refer to Appendix B (Appendix of the standard). The test results shall comply with the provisions of 4.4.19. 5.22 Vibration test
Test equipment and basic parameters:
a) Vibration test bench;
b) Basic movement: a sine function of time; C) Movement axis: three mutually perpendicular axes; d) Frequency range: 10～55Hz;
e) Sweep rate: 1oct/min±10%. 643
JB/T 10275—2001
After preliminary inspection, the drive unit under test is fixed on the vibration table and in the power-on running state. It should be able to withstand the test conditions specified in Table 5, and conduct vibration response and durability tests according to GI3/T2423.10. After the test, it should comply with the provisions of 4.1.3. Table 5
Vibration frequency
5.22.1 Test sequence
Displacement amplitude
a) Initial vibration response check;
b) Constant frequency vibration test;bZxz.net
c) Final vibration response check.
5.22.2 Initial vibration response check
Number of sweeps
Vibration time for each axis
Total vibration time for three axes
The initial vibration response check is carried out in three mutually perpendicular axes according to the vibration conditions specified in Table 5. During the sweep vibration, the test product should be checked to determine the dangerous frequency at which the following phenomena occur: a) Failure and/or performance degradation of the test product due to vibration; b) The occurrence of machine resonance and other responses, such as jitter. The dangerous frequency and applied amplitude on each axis should be recorded. When there are many dangerous frequency points, four larger dangerous frequency points should be taken on each axis.
5.22.3 Constant frequency vibration test
Vibrate each dangerous frequency point in the three axes with the same amplitude for 10 minutes. If there is no obvious dangerous frequency point in the initial vibration response check, the vibration should be maintained at the highest frequency (55Hz) and the amplitude of 0.15mm in the three axes for 10 minutes. 5.22.4 Final vibration response check
Repeat the test in 5.22.2 and observe the frequency of the dangerous frequency point. Compare it with the record of the initial vibration response check. The dangerous frequency point should not have a large change.
5.23 Impact test
The drive unit is fastened on the impact table in the normal working installation mode and should be able to withstand the test conditions specified in Table 6. The impact test shall be carried out in accordance with the provisions of (GIB/T2423.5. After the test, the test product shall comply with the provisions of 4.1.3. Table 6
Peak acceleration
Pulse duration
5.24 Power supply adaptability test
Pulse waveform
Half sine
Number of impacts on each axis
Total number of vertical and horizontal axes
The test product is powered by a variable frequency power supply (the frequency and voltage are adjustable, and the power supply capacity should be greater than the capacity of the test unit). According to the power supply voltage level of the test product, the test product with load and in working state shall be tested in several combinations specified in Table 7. Static power supply pull-off test. The test duration under each combination condition is not less than 15 minutes. The test results shall comply with the provisions of 4.1.4. 5.25 Protection level test
The enclosure protection level test shall be carried out in accordance with the relevant provisions of GB4208 and shall comply with the requirements of 4.2.3. 5.26 Electromagnetic interference test
When the special technical conditions require, the drive unit shall be tested for power supply end conduction interference and radiation interference in accordance with the method specified in (B4824) under rated load, and the harmonic current test shall be carried out in accordance with the method specified in GB17625.1. The test results shall comply with the requirements of 4.4.20. 644
Inspection rules
Power supply voltage 220V
Inspection classification
a) Delivery inspection;
b) Type inspection.
JB/T10275--2001
For factory inspection, type inspection items and relevant inspection requirements, see Table 8. Table 8
Test items
Electrical machinery structure
Insulation resistance
Withstand voltage test
Rated voltage
Rated current
Rated output capacity
Rate of speed change
Speed regulation range
Constant power range
Additional functions
Braking function
Starting and braking time
High and low temperature operation
High and low temperature storage||t t||Constant damp heat
Protection performance
Interface detection
Protective ground circuit continuity
Immunity
Reliability
Technical requirements
4.2,4.3,4.4.16,4.4.17
Power supply voltage 380V
Test method
5.20, Appendix A
5.21, Appendix B
Factory inspection
Type inspection
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