JB/T 10276-2001 General technical requirements for AC servo drive units for CNC machine tools
Some standard content:
JB/T10276--2001
AC servo drive unit for CNC machine tools has been widely used in CNC machine tools, industrial robots and military industries. In terms of classification, according to the characteristics of its control, it can be divided into analog control, full digital control and digital-analog hybrid control; according to the closed loop characteristics, there are only speed closed loops, and there are no corresponding international standards or foreign national standards.
The purpose of this standard is to make domestic products approach the international level and guide the production of the industry. This standard is based on the requirements of JB/T8832-1999 "General Technical Requirements for Digital Control Systems of Machine Tools", and is compiled by referring to the product samples of well-known European standard companies and combining the production conditions of Chinese enterprises. Appendix A and Appendix B of this standard are all appendices of the standard. This standard is proposed and managed by the National Industrial Automation System and Municipal Standardization Technical Committee. The drafting unit of this standard is Beijing Machine Tool Research Institute. This standard was drafted by Li Chengzhao. This standard was issued in June 2001. Beijing Machinery Research Institute is entrusted with the interpretation of this standard. 652. 1 Scope. Machinery Industry Standard of the People's Republic of China. AC servo drive unit for numerical control machine tools. General technical conditions. General specification for A, C, nervn drive unit JB/T10276—2001. This standard specifies the technical requirements, test methods, inspection rules, specifications, packaging, transportation and storage of AC servo drive units for numerical control machine tools. This standard is applicable to various variable current servo drive units for controlling various types of AC servo motors for numerical control machine tools, various semiconductor variable frequency speed regulation devices for numerical control machine tools, and AC servo drive units for other purposes can also be used as a reference. 2 Reference Standards
The clauses included in the following referenced items constitute the clauses of this standard through reference in this standard. When this standard is published, all versions are valid. All standards may be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. GK19) 2000 Packaging storage and transportation pictorial symbol (4V1S0780: 1997) G/T2423.31993 Standard environmental testing procedures for electric and electronic products Test Ca: Steady heat test method (eqv1EC 60068-2-3; 1984)
GH/T2423.5—1995 Environmental testing for electric and electronic products Part 2: Test methods Test Fa and guidance: Minimum (idt IEC 60068-2-27: 1987)
Environmental testing for electric and electronic products Part 1: Test methods Test e and guidance: Minimum (G13/T 2123.10 1925 "
string) (idt1EC60C68-2-6: 1982)
GB4201993 External protection level (I code) (eqvIEC529: 1989) GR/T4188.2-1996 Single-sided and double-sided printed boards with metallized holes (idt[E/PQ: 0: 1990) GR/T4588.4-1996 Multilayer printed boards (idtIFC/PQC91: 1990) GI31824-1996 Measurement methods and limits of electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment Equipment reliability test Failure rate and mean failure-free interval under constant failure rate assumption GB/T 5080.7-1986
Test scheme (idtLEC605-7:1978)
(B/15226.1199-1 Part 1 of electrical equipment for industrial machinery: General technical conditions (IEC:2041:1992) GBJ5760--1995 Technical conditions for safety protection of metal cutting machine tools GB17625.1--1998 Limit values of current waves emitted by low-voltage electrical and electronic equipment (equipment input current 16A (eqv 1EC 61000-3-2:1995)
G13/T17625.2-1998 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test (idt1FC:61000 42::955)
GH/T17626.4-1998 Electromagnetic compatibility test and measurement technology Electrical fast transient burst immunity test (idt IEC 61000 4 4: 1995)
GB/17626.5: 1999 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test (idtIEC6100045:195)
Approved by China Machinery Industry Federation on June 4, 2001 Implemented on October 1, 2001
JB/T 10276—2001
1$B/T 17626.11 1999 n
Electromagnetic compatibility test and measurement technology Voltage dips, short interruptions and voltage variations immunity test (ll TF 61000-4-11:14)
1ECS101:105 Industrial Machinery Electrical Equipment Control and Drive Device Real-time Communication Data Link 3 Definitions
This standard adopts the following definitions.
3.1 AC servo drive unit
When the CNC machine uses an AC servo motor as the servo transmission component, the corresponding AC servo motor control device is the AC servo drive unit, hereinafter referred to as the servo unit. 3.2 AC servo drive device
The AC servo unit and the AC servo motor are connected together to form an AC servo drive device, hereinafter referred to as the servo device. 3.3 Rated output capacity
When the servo device works at the rated load and rated speed, and the unit is in a state of long-term continuous operation without alarm, the maximum power that the servo unit can continuously output is called the rated output capacity. 3.4 Speed change rate (static error rate)
When the servo is set at a given speed, when the load increases from no-load to the maximum load specified in the continuous working area, the relative value of the speed change is called the speed change rate (static error rate) S. Attached fraction table: μ×100%
S(%)=2
Where: ...speed under no-load·
speed under load
3.5 Speed regulation range (speed ratio)
The speed range 1 refers to the ratio of the maximum service speed 1 and the minimum service speed 1 that the motor can achieve when the maximum load on the motor shaft is not greater than the specified value. Speed regulation formula (2 calculation: 1) - en
3.6 Steady speed accuracy
When the motor is running continuously at rated speed and specified load conditions, when the power supply voltage changes, or the ambient temperature changes, the power supply voltage remains unchanged, and the ambient temperature remains unchanged, if the motor is running continuously for less than 24 hours, the absolute difference between the actual speed of the motor and the rated speed is the ratio of the rated speed to the absolute difference between the rated speed and the rated speed. The speed accuracy of the voltage change, the speed accuracy of the temperature change, and the speed accuracy of the time change are as follows:
(%) →\二× 100 yuan
Where: n
Actual rotation speed:
Rated speed
3.7 Static stiffness
When the servo device with position closure is in the no-load working state, a continuous rotation is applied to the motor shaft end in the positive direction or negative direction. When the angular deviation is measured, the static stiffness
This standard stipulates that the unit of rotation is 1.5. The unit of static stiffness is 1.5. 3.8 Stability
It indicates the ability to withstand and resist load disturbances. The dynamic process after the load P is applied during stable operation of the device is taken as a typical disturbance process (see Figure 1). 3.8.1 Dynamic drop
JB/T10276—2001
When the servo device is in steady-state operation, the ratio of the maximum drop of the rotational speed caused by the sudden application of torque load to the steady-state value w is called dynamic drop. The servo device then gradually reaches the new steady-state value w and the device is stable under the disturbance. The relative value of the dynamic drop when the load is suddenly added is called dynamic drop (), 4Z(%)-
3.8.2 The recovery time
In the new steady-state, the range of +1 of the steady-state value is taken as the allowable error band. The minimum time required from the start of the disturbance to the end of the recovery of the system and entering the error band is defined as the recovery time. It is shown in Figure 1 (see Figure 3). The time response curve of the load is 3.9 Followability
The change of the speed output of the servo device under the action of the given signal change is described by the followability index, and the transition process under the change of the given signal step is called step response. It is represented by the following three items (see Figure 2). Nr
Figure 2 Time response of step input
3.9.1F: Rise time,
Rise time t represents the time it takes for the speed output to rise from the initial value to the steady-state value. It represents the rapidity of dynamic response.
3.9.2 Overshoot
The overshoot refers to the ratio of the maximum speed difference (\) between the overstable value and the steady-state value. When expressed as a percentage, it is S
3.9.3 Section 10m
JB/T10276--2001
The time required for the step curve to reach the minimum error value when the steady-state value reaches the limit of the error is defined as the adjustment time, also known as the overshoot process time, which is used to measure the entire process of the device: 4 Technical requirements
4. Suitability
The servo units specified in this standard must be able to work normally under the following conditions. 4.1.1 Climate Adaptation
The working and storage conditions of the service unit are shown in Table 1.1
Environmental temperature
Working air conditions
%-(not exposed)
$6-.106 kpa
Institute, legal system blood recovery conditions
3..-.oekp.
4.1.2 Sea level
When the altitude does not exceed (0) m, the service unit should be able to ensure various technical indicators. \When the altitude exceeds 130m, it is necessary to consider the weakening of the cooling effect of the air. This is for belt manufacturing! The agreement between the user and the servo unit shall be established and used. 4.1.3 Vibration shock test
The servo unit shall be able to withstand the vibration specified in 5.22.5.23, and the shock test - after the test, the servo unit should not show any damage on the visible ring, looseness of the fastening parts (the fastening parts are sealed with paint), and the electrical performance shall not be affected after power is turned on. It should be able to work normally. When the average vibration frequency of the secondary foundation and the corresponding frequency of the servo unit are alternate and a clear loss is generated, the paired servo units take the minimum amount of measures, 4.1.4 Variable input power supply
The servo unit can work normally under the following AC input power conditions. 4.1.4.1 The positive value of the input power is (,8~1.1 Rated input potential 4.1.4.2 Frequency fluctuation does not exceed! 1Hz
4.2 Electrical and mechanical structure
4.2.1 Structural design
The safety of the servo unit structure shall be in accordance with (! 760--1995?, "New 7.2 requirements, and the installation, commissioning, use and repair shall be safe and convenient for maintenance, and the structure and components shall be tested under the specified conditions. 4. 2.2 Appearance
Smooth and without chips, scratches, cracks or deformation. The coating and plating should not have bubbles, flow and leakage. 4.2.3 Protection level
The protection level of the single-unit installed in the electrical system shall not be lower than 2X. The protection level of the independently installed power supply unit shall have sufficient ability to prevent the intrusion of solid objects and metal objects from the outside, and the protection level shall not be lower than 1P54. The protection level shall be specified in the special technical conditions.
4.3 Requirements for components and rail parts
4.3.1 Components, devices, auxiliary 4.3.2 Printed circuit boards
The printed circuit board shall comply with the provisions of Chapter 5 of GB/T458X.2-[936 and Part 5 of GB/T1588.4-1995. 4.3.3 The color of indicator lights and push buttons
The color of indicator lights and push buttons shall comply with the provisions of Chapter 19 of BT3226.1·1996. 4.3.4 The color of the thread
JB/T 10276-2001
The color of the conductor and the wire shall comply with the current standard of G3/526.-1996. 4.3.5 Connection, furnace connection and burning connection
Clip connection, welding and cable connection shall ensure long-term good conductivity, and the wire diameter of the connecting wire shall meet the requirements of the load (B/T62! 1306, Chapter 11, Section 1,
4.4 Gas performance requirements
4.4.1 Insulation resistance
Except for the high voltage test unit that is not allowed to be used in the service unit, the insulation resistance measured when 0)Vd.c. is applied between the test point (including the power circuit) and the protection expansion terminal shall not be less than 20Mn. The bottom of the constant heat test The insulation resistance should not be less than FM!! When the servo unit is powered by a transformer (the transformer is part of the servo unit, but not integrated with the servo unit), the insulation resistance of the transformer part should be measured according to the specified voltage.
4.4.2 Withstand voltage
The power circuit and protective grounding system in the servo unit should be able to withstand at least 1min of non-testing. The applied test voltage should be 100V or 200V (whichever is greater). There should be no insulation breakdown or arcing during the test. The leakage current should not be greater than 5A. The insulation resistance test should be measured according to the provisions of 4.1. During factory inspection, the test voltage test can be used for 3min: the test voltage remains unchanged.
The components that cannot withstand high voltage test can be disconnected during the test. The servo unit is powered by a transformer (the transformer is a part of the servo unit and is not integrated with the servo unit. When the transformer is not integrated with the servo unit, the transformer part shall be subjected to a withstand voltage test according to the relevant specifications.
4.4.3 Rated output capacity
The rated output capacity of the servo unit shall be specified in the special technical conditions and shall be selected from the following data in priority: 0.18.0, 25.0.37, 0.50-0.731.1, 1.5.2, 2.3, 7.5.3, 7.5, 11.15, 18.5.22kVA4.4.4 Speed change rate
The speed change rate at the lowest speed shall be specified in the special technical conditions1. 4. 5 Specifications
Speed range shall be specified in the special technical conditions and shall be selected from the following data in priority: 00: 1.1n00: 1.230t; 1.3000: 1.5000: 4.4.6 Speed accuracy
Steady speed accuracy shall be specified in the special technical conditions. 4.4.7 When the rated load torque is suddenly applied to the motor or the rated load torque is suddenly removed during steady-state operation, the maximum speed drop and recovery time of the motor shall be specified in the special technical conditions. 4.4.8 When the rated speed signal is input to the device under load, the rise time, overshoot and overshoot of the motor speed change shall be specified in the special technical conditions. The adjustment time shall be specified in the special technical conditions: 4.4.9 Forward and reverse speed difference
When the instrument changes the input command voltage level, the forward and reverse speed difference of the motor at the rated speed shall be specified in the special technical conditions.
4.4.10 High and low temperature operation
The unit can operate continuously and reliably under the working climatic conditions specified in 4.1.1 and the electrical conditions specified in 4.1.4. 4.2.11 High and low overflow storage
The unit can operate continuously and reliably under the working climatic conditions specified in 4.1.1 and the electrical conditions specified in 4.1.4. After the storage test, the performance and appearance should not change. 4.4.12 The relative humidity and humidity of the material unit can withstand the temperature (40-2)% and the relative humidity of 93%-95% at 2 people. After the test, measure the insulation resistance in the building. It meets the requirements of 1 and 1.1. The weak dynamic unit should have no obvious surface quality and deterioration, and can work normally.
4.4.13 Static stiffness
It has The static stiffness of the servo device for position and control shall be specified in the special technical conditions. 4.4.14 Protection
4.4.14.1 The servo unit shall be provided with overcurrent, overvoltage, undervoltage and phase loss protection. 4.4.14.2 The servo unit shall be provided with short-circuit protection. 4.4.14.3 The servo unit shall be provided with overspeed and stall protection. 4.4.14.4 The servo unit shall only have overload protection function, and its current-time relationship diagram or table shall be specified in the special technical conditions.
4. 4. 15 Connection 1 [
4.4.15.1 The analog input signal of the servo unit of the speed closed loop is -[0~-0V DC voltage, and the input impedance shall not be less than kQ. It can also be a digital input signal. Under special conditions, the digital input signal shall be in accordance with the provisions of IFC61491. 4.4.15.2 The servo unit shall have the following basic exchange signals with the numerical control device: a) ready (output);
6) allow/block 1. operation (auxiliary).
4.4.16 Protective grounding
The servo unit shall be provided with a protective grounding terminal and shall be marked with FE. The neutral line N of the power supply shall not be connected to the PE terminal inside the servo unit. The grounding connection inside the unit shall comply with the provisions of Chapter 8 of 6B/T5226.1-1996. The continuity of the protective grounding circuit shall meet the requirements of 20.2 of GB/T5226.1996. 4.4.17 Immunity
The servo unit shall have the ability to resist interference from the power supply grid or external electromagnetic field, and be able to operate normally under the conditions that meet the requirements of GB/T7626.3, GB/T7626.4, GB/T17626.5 and GB/T17626.11. 4.4.17.1 Electrostatic discharge immunity
When the servo unit is in operation, an electrostatic discharge test shall be conducted on all parts that are frequently touched by the operator. Contact discharge voltage is 6kV. Empty voltage is 8kV. The servo unit should be able to work normally in the discharge test. If the servo unit has no housing, an indirect discharge test is used. 4.4.17.2 Immunity to fast transient pulse groups When the servo unit is working, add a pulse group with a peak value of 2kV and a repetition rate of 5kHz between the AC power supply terminal and the protective grounding terminal, or add a pulse group with a repetition rate of 1kV and a repetition rate of 5kHz to the I/O signal, data and control port relay coupling. The servo unit should be able to work normally.
4.4.17.3 Surge immunity
Superimpose a surge voltage with a peak value of 10V 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. The servo unit can work normally.
4.4.17.4 Voltage sag and short interruption immunity The voltage sag of the AC input power supply is 31% at any time in any cycle, and the voltage sag of the AC input power supply is 5ms at any time, and the amplitude is reduced to 70% of the rated value. The interval between the two tests is not less than $, and the servo unit should be able to work normally. 4.4.18 Reliability
The reliability of the servo unit is measured by the mean time between failures (MTBF). The MTBF of the servo unit shall not be less than 10000 h. The specific value shall be specified in the special technical specifications. 4.4.19 Electromagnetic interference
When required by special technical conditions, the conducted disturbance voltage value and the radiated disturbance value at the power supply end of the intermediate service unit shall not exceed the limit values for Class A equipment specified in Chapter 6 of [34824-1996]. The harmonic current injected into the public low-voltage power supply system shall not exceed the limit values for Class A equipment specified in Chapter 7 of [B17625.1-1998]. 5 Test method
5.1 Test conditions and requirements
5.1.1 Test power supply
JB/T10276--2001
Unless otherwise specified, the test power supply shall comply with the following provisions: 1) The power supply voltage shall be 0.3:-1.1 times the rated input voltage; 2) The difference between the frequency of the test power supply and the rated frequency shall be within the range of +1 TIz of the rated frequency. 5.1.2 During the test, the accuracy of the electrical measuring instruments used shall not be less than 0.5% (except for the megohmmeter), the accuracy of the current sensor shall not be less than 0.1%, the error of the thermometer shall not be greater than -1°C, and the accuracy of the digital test speed measuring instrument (including the 1-input speed meter) shall not be less than 10.1%. The equipment used for electromagnetic T measurement and harmonic current measurement should meet the requirements of GB4824 and (G1317625.1. When selecting the instrument, the measured value should be within 20%-95% of the instrument range. 5.1.3 Test equipment
The test equipment should include the servo unit, the servo motor and the sensor attached to the motor. The voltage regulation, constant signal setting unit or CNC equipment and distribution circuit that must be used in the test are not used as the internal wear of the inspected representative. During the entire test process, only the parameters and parameter setting values of the adjustable links are allowed to be appropriately adjusted. 5.1.4: Test conditions
Climate environment During or after the tests of adaptability, vibration, shock, high and low humidity continuous operation, the normal operation of the device shall be checked under no-load operation. The inspection content shall include the range of the motor speed from the lowest to the highest speed. The device shall not fail. 5.1.5 Environment
The inspection and test of various technical specifications in this standard shall be carried out under the conditions specified in the table when there is no special reference to the working environment conditions.
Ambient temperature
Relative distance
Atmospheric pressure
5.2 Electrical and mechanical structure
Test conditions
13--35℃
45% --7.26
86--105 g
Monthly test method Each servo unit shall be tested in accordance with the provisions of 1.2 and 4.3 and the requirements of 4.4.15 and 4.4.16. 5.3 Insulation resistance test
5.3.1 Circuit connection for insulation resistance test
\) The input and output terminals of the circuit and the power supply terminal and the common terminal shall be short-circuited: the control unit, board and components that are not allowed to withstand high voltage according to the design can also be disconnected. b) The insulation resistance test is not performed between the circuits coupled by capacitors. When it is necessary to test the insulation resistance between the circuit connected by capacitors and the internal equipment, the short-circuit wire should be disconnected to short-circuit the circuit connected by capacitors. 5.3.2 Insulation test
Use a 500V megohmmeter with an accuracy of 1.0 to connect the power input terminal of the servo unit (the input terminal is not connected to the power grid, only the power switch in the power supply unit, the contactor is in the on position and the protective grounding terminal. After applying the test voltage [in, read the insulation voltage. It should comply with the provisions of 4.4.!
During the test, it should be ensured that the contact points have reliable contact, and the insulation voltage spot between the test wires should be large enough to ensure accurate readings. 5.4 Withstand test
The circuit connection of the withstand test is the same as 5.3.1. The test is conducted on the power input terminal of the servo unit (the input terminal is not connected to the power grid, the power switch in the power supply unit is in the on position and the protective grounding terminal is connected. The test voltage is 1 The test voltage should start from zero or less than half of the full value, then increase to zero or increase by a step not exceeding 5% of the full value, and the time from half value to full value should be not less than 19 seconds and then maintained for 1 minute. The tester shall gradually reduce the voltage to zero. For factory inspection, the 1min test can be replaced by the 5: test. The test result shall comply with 4.1.2. The test result shall be that the control unit and components that are not allowed to withstand the high voltage shall be disconnected. 5.5 Rated output capacity test
The servo device works at rated load and a certain speed. When the servo unit runs continuously for a long time (about 1h) without an over-current alarm, use a voltmeter and an ammeter to measure the power supply and output current of the servo unit respectively, and the output capacity of the servo unit is calculated accordingly. The servo unit output capacity shall comply with 4.41.3 5.6 Speed change rate test kit
Read the total no-load speed as n under the minimum speed command. Then gradually increase the load until the maximum load value allowed under this speed. The speed at this time is measured as \+ Then calculate the speed change rate according to formula (1). It should comply with the provisions of 4.4.4. If the minimum speed is very low, the speed measurement error exceeds! If necessary, use the pulse period measurement method of the photoelectric pulse encoder to measure the speed change rate, and calculate the speed change rate S (%) according to formula (7) -× 100%
Where: T.--the average value of the encoder pulse period when loaded; T---the average value of the encoder pulse period when unloaded. fwwW.bzxz.Net
5.7 Speed range test
The speed range test is to apply the maximum load allowed when the maximum speed is applied to the motor output, and measure the maximum speed (mm) and the minimum speed (m) when the speed change rate is not large. Then calculate the speed range according to formula (2) to meet the requirements of 4.4.5. 5.8 Steady speed test
5.8.1 Output pressure change Steady speed accuracy
Under the test temperature conditions, make the service unit run continuously under rated load and rated speed (r.). Measure three times in total under the following conditions, with each measurement interval not less than 1min. Adjust the input power to the service unit to 1:0% of the rated value, record the actual speed at this time, then adjust the input power to 85% of the rated value, and then measure the actual speed n of the motor, and calculate the speed accuracy of the following changes according to formula (3) - where: 1 and 2 are respectively. The test results shall comply with the provisions of 1.4.6. 5.8.2 Steady speed accuracy of temperature changes
Put the service unit in an artificial climate box under no-load conditions. Adjust the motor speed to a fixed speed at 20 degrees. Then, continuously measure the points under the following conditions, with each measurement interval not less than 1min. Adjust the temperature to %:. Thermal equilibrium (-- not less than 30min). Measure the motor speed and then adjust the temperature to 40.After heating, measure the motor speed and use formula (3) to calculate the temperature change stability accuracy, where 1 is 1.2, * is 2, respectively. The test results should comply with the provisions of 4.4.6. 5.8.3 Time change stability accuracy
The servo unit is in a normal gas (continuous environment), rated input voltage and no-load conditions, adjust the motor speed to the rated speed\, and avoid the time environment temperature change not exceeding +2%. Run continuously for 8h. Measure the speed every 0.5h: m· and calculate the time change stability accuracy according to formula (3), where 1 is 1.2, * is 1. Take the maximum deviation value as the test result, which should comply with the provisions of 4.4.5. 5.9 Stability performance test
When doing the stability performance test, the load of the motor can be a motor of the same type, specification, and performance as the tested servo device. Brakes and other loading equipment, but should be able to prove that their rotational inertia and electrical time constant have little effect on the test results. When the servo unit is running stably at no load and 5.5, a sudden load of 0.5 times the rated load is added, and the time response curve of the speed change is recorded by a digital storage oscilloscope. The dynamic speed drop is found out according to the method shown in Figure 1, and the dynamic speed drop △ is calculated according to formula (5) () recovery time: It should comply with the provisions of 4.4.7
5.10 Follow-up performance test
Make the motor driven by the servo unit in the no-load zero speed state, input the order of the speed, and record the time response curve of the speed increase process with a digital storage oscilloscope. Read the loading time, transient maximum speed" and adjustment time!, and calculate according to formula! 660
JB/T 10276—2001
Calculate the overshoot. Change the direction of the motor speed and repeat the above test. The above two sets of data should meet the requirements of 4.4.H. 5.11 Forward and reverse speed difference test
Under no-load conditions, the low-power unit inputs the forward and reverse continuous commands of the rated speed (only the polarity is changed, but the value is not changed). The forward and reverse speeds of the motor are measured and recorded respectively, and the working and reverse speed differences are calculated according to formula (8): An() I m=n I x 1x9%
The forward and reverse speed difference shall comply with the provisions of 4.4.9. 5.12 High temperature test
Place the servo unit in a high temperature box and raise the internal temperature to (soil 2)℃. After reaching thermal half equilibrium (for example, not less than Sim): the motor is allowed to run at rated speed and load, and keep the temperature in the box constant for 48h. The operating conditions (input power positive and operation time) are cyclically carried out according to the provisions of Table 3. The servo unit should be able to work normally. During the inspection, it is allowed to run continuously under the rated power supply voltage. 1: The servo unit should be able to work normally.
Input power supply voltage
Run time 1
5.13 Low temperature operation test
Rated voltage
Recognized value 10%
Standard tube
Place the servo unit in a low temperature box and lower the temperature in the box to (55-12) to reach thermal equilibrium (-- generally speaking, at least 10 Ti), keep the temperature in the box clear and make the motor run continuously for 4 hours at the rated speed (load): 5.14 High and low temperature storage test
5.14.1 High temperature storage test
Place the servo unit in a high temperature box and raise the temperature in the box to (55-12) to reach thermal equilibrium (-- generally speaking, at least 10 Ti). Keep the temperature in the box constant and place the test unit without power for 1 hour. After the test period expires, gradually lower the temperature to the minimum and place it under this condition for 4 hours. The time for reducing the temperature in the box is not included in the time for placing it. Then check the appearance: the servo unit can work properly,
5. 14. 2 Low temperature storage test
Put the servo unit in a low temperature box and make the temperature inside reach (4012)T. After reaching the designated temperature. Bottle speed: at least 30in), keep the temperature inside the box constant, and place the test unit without electricity for 3 hours. After the test period, gradually increase the humidity to normal atmospheric conditions, and do not count the time of temperature rise in the box under batch conditions. Then check the appearance and temperature, and the servo unit can work properly.
5.15 Constant mixed heat test
Place the servo unit in the mixed heat test section and conduct a wet heat test according to the provisions of (13/T2423.3). The test piece shall meet the requirements of 4.4.12. 5.16 Static stiffness test
Make the servo device with position control in a no-load speed state. Use a high-resolution and accurate shaft angle sensor to detect the dynamic speed. Select the motor shaft angle as the reference zero position. Use a pulley, a measuring wrench or a machine to measure the positive and reverse torque of the motor. After the motor is connected to the maximum rotation area, measure the shaft angle position of the dynamic shaft. (Calculate the static stiffness: At least three points should be selected at random during the test. The data of the positive and negative test are measured together, and the calculated average result meets the requirements of 4.4.13.
5.17 Protection performance test
5.17.1 Power supply fault protection
The power supply fault (overvoltage, undervoltage, phase loss protection test of the service unit is carried out under no-load conditions. The service unit has an adjustable power supply. Slowly adjust the output voltage of the adjustable power supply to make it higher or lower than the allowable voltage (i.e. overvoltage) of the service unit until the undervoltage protection is detected. After restoring the normal operating voltage, the service unit should be able to start again! Normal: When the service unit is working normally and suddenly uses any power source (when it is in normal working state for a period of time, the unit can be effectively protected. 485
JB/T 10276—2001
The servo unit is damaged. After restoring the normal wiring, restarting the servo unit should be able to work normally. 5.17.2 Functional Fault Protection
When the servo unit is working properly, the speed feedback signal is suddenly disconnected or the thermal switch is removed. The servo unit should be protected and work normally. After restoring the normal wiring, restarting the servo unit should be able to work normally. 5.17.3 Short-circuit protection
The short-circuit protection test of the servo unit is carried out under no-load conditions and rated voltage: gradually increase the speed while making any two leads of the motor short-circuited until the servo unit shows short-circuit protection. After restoring the normal wiring, restarting the servo unit should be able to work normally. 5. 17.4 Overload protection test
The overload protection test shall be carried out according to the data in the overload protection current-time relationship table of the product-specific technical conditions. If the special technical conditions only give the current-time relationship, at least two points of overload 50% and rated load 10% of the maximum overload capacity shall be taken for the test
During the test, the motor speed shall be set at 0.01· and the actual value of the rated current shall be increased to the specified overload multiple. The timer shall be used in seconds to record the time for the overload protection action, which shall comply with the provisions of the special technical conditions. Factory inspection allows the maximum overload capacity to be checked: the overload protection at point 1, and it is allowed not to use the loading device but to use the method of stalling the motor to make the current reach the maximum overload current value. 5.18 Interface detection
The servo unit shall have the "interchangeable signal of the CNC device" specified in 4 and 4.15, and the input impedance of the servo unit shall meet the requirements of 4.4.15. After power is turned on, the "ready" contact output signal of the servo unit should be closed. When the input signal is 10V, the servo motor should be at the highest speed of forward and reverse rotation. At this time, the "lock" signal is input and the motor stops. 5.19 Protective grounding circuit continuity test
Test equipment and basic parameters:
Protective grounding circuit continuity test (PELV) test error ≤0.05V
Use PEI.V power supply with a low voltage of 50H or 80Hz, and the current is greater than J0A, and the time return is greater than 10*) between the PF terminal of the test product and different points of the protective grounding circuit components. The measured voltage drop between the IE terminal and each test point should not exceed the value in Table 4 The value specified,
Minimum effective cross-sectional area of the tested protective conductor branch mm
Maximum measured voltage drop
5.20 Immunity (electromagnetic compatibility) test
The immunity (electromagnetic penetration) test includes electrostatic discharge immunity, electrical fast transient and surge immunity, leakage immunity and voltage transient interruption test. The test method is detailed in Appendix A (Appendix to the standard). The test results should comply with the provisions of 1.1.17. 5.21 Reliability test
The reliability test method is detailed in Appendix F (Appendix to the standard). The test results should comply with the provisions of 4.4 and 8, 5.22 Vibration test
Test equipment and basic parameters:
a) Vibration test bench:
h) Basic movement: sinusoidal function of time; c) Movement axis: three mutually perpendicular axes; d) Frequency range: 10~·55 IIz;
r>Sweep frequency rate: 1 ot/mm=[0%
JB/T 10276—2001
After preliminary inspection, the servo unit is fixed on the vibration table and powered on. It should be able to withstand the test conditions specified in Table 5 and undergo vibration and endurance tests according to G1/［2423.15. After the test, it should comply with the requirements of 1,1.3. Table 5
Vibration frequency
10--55
5.22.1 Test sequence
Disc moving path
) Initial vibration response check;
h) Constant frequency vibration test;
c) Final vibration response check.
Number of sweeps
Time between each vibration test
Three axis tests
5.22.2 Initial vibration response check
Initial vibration response check is carried out in the vertical and vertical axes according to the vibration conditions specified in Table 5. During the sweep frequency vibration test, the test product should be checked to determine the dangerous frequency of the following phenomena: a) Failure and/or performance degradation of the test product due to vibration; b) Mechanical resonance and other responses, such as jitter, occur. The amplitude of the dangerous frequency change on each axis should be recorded. When there are many dangerous frequency points, four relatively dangerous frequency points should be selected on each axis.
5.22.3 Constant frequency perturbation test
Each dangerous frequency point on each axis should be vibrated with the same amplitude for 10 minutes. If there is no obvious dangerous frequency point in the initial vibration response check, the highest frequency (55Hz) should be vibrated on each axis with an amplitude of 0.15mm 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. Compared with the record of the initial vibration response check, the dangerous frequency point should have a large change.
5.23 Shock test
The servo unit is fastened on the shock table in the normal working installation mode and should be able to withstand the test conditions specified in Figure 6. The shock test is carried out according to the provisions of 13/12423. After the test, the test product shall meet the requirements of 1.1.3. Table #
Peak acceleration
Pulse duration
Pulse waveform
Half-stop
Number of vertical axis impacts
Total number of horizontal and horizontal axis impacts
Power adaptability test
Test product variable power supply (frequency and voltage are adjustable, and the power supply capacity should be equal to the capacity of the test unit) Similar power: According to the power supply level of the test product, the test product with load and working state is subjected to the reverse static power pull test. The test duration under various combination conditions is not less than 15 minutes. The test results shall meet the requirements of 4.1.4. 5.25 Protection level test
The external protection level test shall be carried out in accordance with the provisions of (G4208 and shall comply with the requirements of 4.2.3. 5.26 Electromagnetic interference field test
Special technical conditions have requirements attached. The service unit shall be tested under rated load in accordance with the method specified in (4824).
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