GB/T 17499-2017Microcomputer controller for household washing machine (English PDF)

3.1 Wave wheel washing machine (impeller washing machine)

The washing machine is immersed in the washing water, and is washed by means of continuous rotation of the pulsator or timing rotation. [GB/T 4288-2008, definition 3.2]

3.2 Drum washing machine

The object to be washed is placed in the drum, partially immersed in water, and washed by means of continuous rotation of the drum or rotation of the timing in the forward and reverse directions. Clothes machine. [GB/T 4288-2008, Definition 3.3]

3.3 Stirring washer (agitator washing machine)

A washing machine in which the laundry is immersed in the washing water and washed by means of a reciprocating motion of the stirring blade. [GB/T 4288-2008, definition 3.4]

3.4 Rated normal load

According to the nameplate of the washing machine, the rated washing capacity and rated water consumption are added to the washing machine barrel, and the washing machine is in accordance with the common (standard) washing program. The load that the programmer is subjected to during operation.

3.5 Rated washing capacity

The maximum mass of the standard laundry in a washable dry state.

Note 1. Rewrite GB/T 4288-2008, definition 3.13.

Note 2. The unit of rated washing capacity is kilograms (kg).

3.6 Rated water consumption

The semi-automatic and fully automatic washing machine manual specifies the approximate amount of water required for a common (standard) washing procedure. [GB/T 4288-2008, definition 3.16]

Note: The unit of rated water consumption is liter (L).

3.7 Common (standard) washing program

The washing procedures included in the product instruction manual include washing, rinsing, and dehydration. [GB/T 4288-2008, definition 3.29]

3.8 Low power circuit

The appliance is powered by the rated voltage and a variable resistor that has been tuned to its maximum resistance is connected to the point of investigation and the power supply.

Between the poles, then reduce the resistance until the power consumed by the resistor reaches a maximum, at the end of the 5th, the maximum supply to the resistor Those points of the nearest power source that do not exceed 15W are called low power points. The part of the circuit that is farther away from the power supply than the low power point is recognized. To be a low power circuit.

5.1 Environmental conditions

According to 4.1.2 of GB/T 14536.1-2008, except for the test environment conditions, the test should be without strong sunlight or heat source.

Radiation and indoors without strong electromagnetic interference, and meet the following conditions.

a) Ambient temperature. 20 °C ± 5 °C; if the temperature of a certain part is limited by temperature sensitive devices or affected by phase change temperature (for example, when the water boils), if in doubt, the ambient temperature is maintained at 23 ° C ± 2 ° C;

b) Relative humidity. 45%~85%.

5.2 Test power supply

The test power supply is a single-phase AC sine wave, and the voltage and frequency fluctuation range shall not exceed ±1% of the rated value.

5.3 Test instrumentation

All instruments and instruments selected during the test shall be within the weekly inspection period, and the accuracy of the instrumentation shall meet the following requirements.

a) The accuracy of the electrical measuring instrument (excluding the megohmmeter) is not less than 0.5, and the factory inspection is not less than 1.0;

b) Insulation resistance tester, the accuracy level of the instrument is not less than 1.0, DC500V;

c) the accuracy of the thermometer is within 0.5 °C;

d) the accuracy of the humidity meter is within 3%;

e) the accuracy of the timer is within 0.5%;

f) The inherent error of the sound level meter is not more than 1dB.

6.1 Conditions of use of the programmer

The use conditions of the program controller are as follows.

a) Operating temperature range. 0 ° C ~ 70 ° C;

b) the relative humidity is below 95% (at a temperature of 25 ° C);

c) The working power supply is single-phase AC, rated voltage is 220V, rated frequency is 50Hz, and the maximum rated current is 16A;

d) Program controller load. water inlet solenoid valve, drain solenoid valve, washing motor and other motors, electromagnets, heaters and other loads.

6.2 Appearance and structure

6.2.1 Visual inspection of the appearance of the programmer, the surface of the programmer should be neat, no visible damage, scratches, cracks, mildew, burrs, rust and The peeling phenomenon of the coating, the components assembled and welded on the program controller should be easy to maintain, and the control part is flexible.

6.2.2 The solder joints are smooth and the welding is firm. No soldering, desoldering or loose components are allowed.

6.2.3 The program controller shall be protected against moisture and dust, and the moisture and dust shall meet the insulation requirements of the product.

6.2.4 Use calipers or special inspection tools to check the height dimension, position size and installation dimensions of the program controller and the washing machine.

Dimensions and installation dimensions, height dimensions and position dimensions of buttons, light stands, digital tubes and other display devices should meet the design documents. Or contractual requirements.

6.2.5 The product size, logo, model and color of the connection shall conform to the design documents or contract requirements, and the label shall be clear, correct and firm. The brush should be clear and accurate.

6.3 Components and materials

6.3.1 The waterproof and moisture-proof performance of the transformer should meet the requirements of the whole machine.

6.3.2 The key switch should be accurate, reliable and flexible. The performance should meet the requirements of the whole machine. The appliance switch applied to non-low power circuits should be Meet the requirements of GB/T 15092.1.

6.3.3 Printed boards shall meet the requirements of GB/T 4588.1~GB/T 4588.4.

6.3.4 The injection molded parts shall be made of flame-retardant and heat-resistant materials; the surface of the injection molded parts shall be smooth and even, and the color shall be uniform, and there shall be no defects such as cracks and shrinkage holes.

6.3.5 The moisture-proof and dustproof of the program controller should be sealed with transparent or translucent insulating glue; or the surface should be coated with insulating varnish. The thickness of the seal is uniform, No obvious bubbles, smooth surface, no oil, no sticky hands. Insulating adhesive (lacquer) should have strong adhesion, waterproof, flame retardant, heat resistant, elastic, no Poisonous, non-corrosive, odorless and aging resistant.

6.4 Functional requirements

Install the program controller on the test bench or washing machine to make it run according to the program. The control functions and procedures of the program controller should be in accordance with the supply and demand sides.

Business rules and requirements. The functions and procedures should be correct when the safety standards are met.

6.5 Buzzer Volume

The sound level of the buzzer is measured with a sound level meter 20 cm above the buzzer. The buzzer sound pressure level is not less than 65dB (A), the measured product The difference between noise and background noise should be greater than 10dB(A).

6.6 Voltage fluctuation adaptability

Install the program controller on the test bench or the washing machine. When the power supply voltage is 115% of the rated voltage and 85% respectively, run two.

A common washing program, the program controller should be able to meet the requirements of 6.4.

Note: The actuator of the test bench or washing machine should be able to withstand the above voltage fluctuations.

6.7 Voltage jerk performance

Install the programmer on the test bench or washing machine, in the case of sudden change of the power supply voltage within ±15% of the rated voltage, that is, in 2s The internal pressure is reduced from 115% of the rated voltage to 85%, and then rises to 115% as a cycle. The cycle is operated continuously for 10 cycles. The programmable controller should be able to Meet the requirements of 6.4.

6.8 Trouble-free performance

The program controller used in the washing machine shall be tested for fault-free operation according to the test method given in 6.9 of GB/T 4288-2008.

After the test, it should meet the requirements of 5.10 of GB/T 4288-2008.

Note: Under the premise of agreement between the supplier and the buyer, the working life of the component can be demonstrated by conducting an accelerated life test. Specific procedures and modes are provided by The party is determined according to the characteristics of its own products. The use of accelerated life testing is indicated on the test report. The accelerated life test method can be found in Appendix A.

6.9 Information

The information provided shall meet the requirements of Chapters 7 and H.7 of GB/T 14536.1-2008.

6.10 Protection against electric shock

6.10.1 Chapter 8 of GB/T 14536.1-2008 is not applicable except as follows.

--- GB/T 14536.1-2008 8.4 applies;

--- GB/T 14536.1-2008 H.8 applies.

6.10.2 The controller itself does not have protection against electric shock and should be assembled in the washing machine for safe use.

6.10.3 If the programmable controller has an easily accessible hazardous live part, it shall be marked "Power hazard" on or around the printed board of the part. Obvious words or corresponding marks. The programmable controller should be powered by an isolating transformer.

The inspection, testing and maintenance of the program controller shall be carried out by professionals.

6.11 Structural requirements

Chapter 11 of GB/T 14536.1-2008 is not applicable except as follows.

---GB/T 14536.1-2008 11.2.4 applies;

---GB/T 14536.1-2008 11.6 applies;

--- GB/T 14536.1-2008 11.11.1 applies;

--- GB/T 14536.1-2008 11.11.2 applies;

--- GB/T 14536.1-2008 H.11 applies.

6.12 Moisture proof and dustproof

Chapter 12 of GB/T 14536.1-2008 is replaced by the following.

When the program controller is installed and used in the prescribed manner, it shall have a protection level against water and dust intrusion suitable for its IP classification.

The program controller is installed on the whole machine of the washing machine. In the standby state, at a rated voltage of 1.15 times, the washing powder with a mass concentration ratio of 2% is used.

The solution drops a total of 200 drops at a rate of 4 drops per minute, dripping all the gaps in the machine, and the programmer should not have a fire. The design can be coordinated by means of structural protection.

Note: The film is not considered to be structural protection.

6.13 Normal insulation resistance

Apply 500VDC between the live parts of the programmer and the uncharged metal parts under the environmental conditions of 5.1 using an insulation resistance tester.

Measure the insulation resistance, which should be no less than 100Mohm.

6.14 High temperature and high humidity insulation resistance

The controller is placed under the condition of temperature (65±2) °C and relative humidity (93±3)% for 48h, and then tested by insulation resistance under this condition.

The instrument shall apply 500VDC to measure the insulation resistance between the live parts of the program controller and the uncharged metal parts, which shall be not less than 1Mohm.

When measuring, the condensation on the part to be tested should be wiped off.

6.15 Insulation resistance after immersion

Use a program controller for potting and insulating rubber, soak it in room temperature water of 20cm depth for 48h, remove the water in the socket, button, etc.

Remove the surface water droplets and apply an insulation resistance tester to apply 500 VDC to measure the insulation between the live parts of the program controller and the uncharged metal parts. Resistance should be no less than 1Mohm.

Note: The use of a programmable controller for the application of insulating varnish does not apply to the requirements of this clause.

6.16 Normal electrical strength

Under the environmental conditions of 5.1, the electrical strength of the program controller should meet the requirements of 13.2 of GB/T 14536.1-2008.

6.17 High temperature and high humidity electrical strength

The programmable controller is placed under the conditions of temperature (65±2) °C and relative humidity (93±3)% for 48 hours. Under this condition, the electrical strength of the programmable controller Should meet the requirements of 13.2 of GB/T 14536.1-2008.

6.18 Fever

Under the environmental conditions of 5.1, according to the test method of Chapter 11 of GB 4706.1-2005 at 1.15 times rated voltage and rated (positive Under normal load, the program controller runs according to the most severe program. After the temperature of the heat-generating component is no longer rising, the heat sink is used to measure the heat dissipation plate and transform the pressure.

The temperature of the casing and other heating components shall be in accordance with the provisions of Chapter 11 of GB 4706.1-2005.

6.19 Manufacturing deviation and drift

Test according to the requirements of 15.5 and 15.6 of GB/T 14536.1-2008, and test at 6.22 and 6.24, and 6.26 and 6.27.

After that, the program controller should comply with the provisions of 6.4.

6.20 Low temperature work

After the program controller is placed at (-10±2) °C for 1h, two common (standard) washing programs are energized under this condition, and the program controller should be able to Meet the requirements of 6.4.

6.21 Low temperature storage

The program controller is placed at (-40±2) °C for 2h, then returned to the normal condition for 1h, and then the programmer is installed on the test bench or laundry.

The common (standard) washing program is run on the machine, and the program controller should meet the requirements of 6.4.

6.22 High temperature work

For the program controller without drying function, after being placed at (60±2) °C for 1h, the two common (standard) washing processes are energized under this condition.

Sequence, the program controller should be able to meet the requirements of 6.4.

After the program controller with drying function (including dryer) is placed at (80±2) °C for 1h, the power is operated under this condition.

(Standard) washing procedures, the program controller should be able to meet the requirements of 6.4.

6.23 High temperature storage

The program controller is placed at (75±2) °C for 24h, then returned to the normal condition for 1h, and then the programmer is installed on the test bench or laundry.

On the machine, the power supply runs a common (standard) washing program, and the program controller should meet the requirements of 6.4.

6.24 Thermal shock

The controller is placed at (-20±2) °C for 1 h, then the controller is moved to (60 ± 2) °C for 1 h for 2 h. ring. Then, the program controller was moved to (-20±2) °C for 2 hours in 2 minutes, and 10 cycles were continuously performed. The last loop ends After that, the programmer should be at (60 ± 2) °C. Then return to 5.1 environmental conditions for 1h, then install the programmer on the test bench or On the washing machine, the common (standard) washing program is run on the power supply, and the program controller should be able to meet the requirements of 6.4.

6.25 High temperature and high humidity environmental stress

The controller is placed at a temperature of (65 ± 2) ° C, relative humidity (93 ± 3)% for 48 h, and then returned to 5.1 environmental conditions to maintain After 1h, install the program controller on the test bench or washing machine, and run the common (standard) washing program on the power supply. The program controller should be able to meet the requirements of 6.4. Provisions.

6.26 Durability

Chapter 17 of GB/T 14536.1-2008, replaced by the following.

The program controller should be designed so that the normal operation of the programmer should not cause electrical or mechanical failures that impair the requirements of this standard.

The insulation should not be damaged, and the contacts and connections should not be loose due to heat, vibration, etc. Use the following method to verify.

The program controller is assembled on the washing machine and is connected to the common (standard) washing program under the environmental conditions, rated voltage and rated load of 5.1.

Continue to run for 48h, remove the program controller to check; components should not be damaged and deformed, contacts and connections should not be loose, insulation resistance meets 6.13 Provisions.

6.27 Mechanical strength

Chapters 18 and H.18 of GB/T 14536.1-2008 are replaced by the following. […]