I. Necessary conditions for repairing 530SE program controller:
1. A small power supply voltage regulator;
2. A 530SE program controller base;
3. Make a maintenance test bench based on the internal wiring of Riello G20;
4. An MF-47 multimeter;
5. A 30W internal heating soldering iron;
6. Used to replace frequently damaged components such as power tubes, triodes, diodes, voltage regulators, bridge piles, flat resistors, varistors, etc.;
7. A set of commonly used tools;
II. Common faults and troubleshooting methods of 530SE program controller:
From the structure of the program controller and the circuit of the program controller, 530SE is a simpler one among all Riello program controllers, so the scope of faults is small and easy to eliminate. The common fault is no ignition.
1. When the ignition fails, first open the programmable controller shell and observe whether the internal components and circuit boards of the programmable controller have signs of burning. Commonly burned components are varistors that are burned {replaced} and flat resistors that are burned. Flat resistors are often burned. Sometimes the programmable controller can be restored to normal by rewinding it. Sometimes they are burned again after rewinding, which indicates that the power tube is short-circuited and can be restored to normal by replacing the power tube. Flat resistors that are burned and damaged power tubes account for about 60% of the maintenance of 530SE programmable controllers.
2. If there are no signs of burning on the internal components and circuit boards of the programmable controller, check whether the programmable controller has L supply. The control power supply of 530SE is connected from pin 3 (N) and pin 5 {L} to pin 6 through internal contacts, and pin 6 is the motor power supply. When the motor is powered on, the motor works and generates a 50V AC voltage that is transmitted to the control circuit through pin 7 and the flat resistor. Therefore, first use the multimeter AC 250V to measure whether there is 220V between pin 3 (N) and pin 5 {L}. If there is no voltage, it means that there is a problem with the external power supply. Then measure whether there is 220V between pin 3 (N) and pin 6 {L}. If there is no voltage, it means that there is a problem with the internal contact. Common faults include poor contact or open contact. The former only needs to be gently polished with fine sandpaper, while the latter requires the contact spring to be reshaped to make good contact.
3. After pin 6 is powered, if it still does not ignite, check the control circuit power supply. Use the multimeter DC 50V to measure whether there is a DC voltage output at the positive and negative poles of the bridge stack. Common faults are generally bridge stack damage, which can be restored to normal after replacement.
4. If it still does not ignite, it means that there is a problem with the control circuit backstage and ignition transformer. Because the failure rate is low, it will not be analyzed again.
5. Note: If you are proficient in the above maintenance methods, 85% of 530SE program controllers can be restored. If you want to improve the repair rate, you must work hard on electronic circuits and replace foreign components with domestic components. Only in this way can you move to a higher level.
I. Necessary conditions for repairing 530SE program controller:
1. A small power supply voltage regulator;
2. A 530SE program controller base;
3. Make a maintenance test bench based on the internal wiring of Riello G20;
4. An MF-47 multimeter;
5. A 30W internal heating soldering iron;
6. Used to replace frequently damaged components such as power tubes, triodes, diodes, voltage regulators, bridge piles, flat resistors, varistors, etc.;
7. A set of commonly used tools;
II. Common faults and troubleshooting methods of 530SE program controller:
From the structure of the program controller and the circuit of the program controller, 530SE is a simpler one among all Riello program controllers, so the scope of faults is small and easy to eliminate. The common fault is no ignition.
1. When the ignition fails, first open the programmable controller shell and observe whether the internal components and circuit boards of the programmable controller have signs of burning. Commonly burned components are varistors that are burned {replaced} and flat resistors that are burned. Flat resistors are often burned. Sometimes the programmable controller can be restored to normal by rewinding it. Sometimes they are burned again after rewinding, which indicates that the power tube is short-circuited and can be restored to normal by replacing the power tube. Flat resistors that are burned and damaged power tubes account for about 60% of the maintenance of 530SE programmable controllers.
2. If there are no signs of burning on the internal components and circuit boards of the programmable controller, check whether the programmable controller has L supply. The control power supply of 530SE is connected from pin 3 (N) and pin 5 {L} to pin 6 through internal contacts, and pin 6 is the motor power supply. When the motor is powered on, the motor works and generates a 50V AC voltage that is transmitted to the control circuit through pin 7 and the flat resistor. Therefore, first use the multimeter AC 250V to measure whether there is 220V between pin 3 (N) and pin 5 {L}. If there is no voltage, it means that there is a problem with the external power supply. Then measure whether there is 220V between pin 3 (N) and pin 6 {L}. If there is no voltage, it means that there is a problem with the internal contact. Common faults include poor contact or open contact. The former only needs to be gently polished with fine sandpaper, while the latter requires the contact spring to be reshaped to make good contact.
3. After pin 6 is powered, if it still does not ignite, check the control circuit power supply. Use the multimeter DC 50V to measure whether there is a DC voltage output at the positive and negative poles of the bridge stack. Common faults are generally bridge stack damage, which can be restored to normal after replacement.
4. If it still does not ignite, it means that there is a problem with the control circuit backstage and ignition transformer. Because the failure rate is low, it will not be analyzed again.
5. Note: If you are proficient in the above maintenance methods, 85% of 530SE program controllers can be restored. If you want to improve the repair rate, you must work hard on electronic circuits and replace foreign components with domestic components. Only in this way can you move to a higher level.