11, EV1000 small size: the original fault is a bomber, no output after repair, often is bad R13. Therefore, when developing a bomber, it is necessary to develop the R13 to be 10 Euro.
12, TD3000 power display POFF:
1. Is the driving board CVD voltage 2.5V~2.8V normal?
2. Is the driver board IU, IV, IW voltage normal? (current detection circuit)
3. Is the VREF reference voltage on the control board normal? Check the voltage regulator U24 of T1 and 2.5V.
If all of the above are normal, please reprogram the two DSP programs. Please note that after erasing, you need to power off for a few seconds and then write the program. Otherwise, DSP is bad.
After the machine is repaired and the display is normal, press the following steps to press it to run. This will reduce the possibility of explosives.
The DC gear red is connected to "10", black is connected to UVW: TD900, TD3200 single-phase should be 310v, TD900 three-phase should be 540v. TD1000, TD3000, EV1000, EV2000 should all be 5-10V.
If it is not correct, it cannot be operated. Otherwise, there will be eight or nine bombings. At this time, the corresponding optocoupler and diode should be replaced by shutting down, and the above process should be repeated until the voltage is correct.
13. Display E010:
Power on display E010, Hall is bad. Operation shows E010, the module is bad.
When the inverter is powered on, it will display E010, it should be the current detection circuit itself is faulty. That is, the inverter has not yet operated and there is no current output, but the circuit has detected an output current. Low-power machines are often TL082C bad, high-power machines are often Hall bad. What phase of UVW current is the problem? It can be judged as follows:
Use the table mv file red to connect IU, IV, IW test points, the normal should be 0, if the point is high (for example, +10) or low (for example, -10), there is a problem with the corresponding phase current.
Example IV = 1000mv, V phase Hall bad. When the inverter power-on display is normal, E010 will be displayed as soon as the operation is pressed, and the module is most likely to be bad. Which phase module is bad, can be judged by the following methods: power on, DC red file is connected to "10", black is connected to UVW respectively, normal should be 5-10V, if one phase is much higher, this phase module is bad.
14, the output imbalance:
If the IPM and the optocoupler are tested, the resistance is good, and the performance of the optocoupler is generally deteriorated. Of course, the control board, IPM is also bad. Judging whether IPM is bad on the bridge or bad on the bridge, use the following methods to judge: power on and press operation, the DC file is connected to red, and black is connected to UVW. Normally, it should be 210V. If one phase is 0, the lower bridge Bad. The DC link is connected with "-" and the red is connected with UVW. Normally it should be 210V. If one phase is 0, the upper bridge is bad.
15, insulation or pressure resistance, however:
(1) Radiator is uneven, top is bad IGBT. (2) There are hard foreign materials (such as tin dross) in the grease, top bad IGBT. (3) Breaking of the insulating film under the brake pipe or cracking of the ceramic chip. (4) Bad insulation pole of high power machine. (5) Defective grounding capacitor on the board.
Once on the secondary pressure resistance: poor optocoupler driver board.
16, EV2000 health disk: display 4 8 and all lights (darker): Socket CN1 second row from left to right second leg welding.
17, the control panel shows no maintenance four steps:
(1) Amount voltage. (2) Crystal volume. (3) Amount reset signal. (4) Rewrite the software.
18, the control board is not displayed but the relay is closed:
Relay pull-in indicates that the control board is working properly, but the display signal does not go to the keyboard. It is common to connect L1 or resistance welding with the keyboard socket CN3, and also to install the wrong resistance in the outside factory.
19, TD2100 control board troubleshooting:
E001, E019 measured OC voltage is only 0V, normal 5V: U24 LMV393 bad. The fan does not turn: U5 is bad. E016: EEPROM error U3 is bad. Inverter input side open open and fail to close: Q1 bad. Power on POFF or 4 8:5V short circuit, U2 scorch: Remove U2, measure 5V short circuit? If it is not short circuit, CPLD U2 bad; if there is some short circuit, but the resistance value from more than 10 euros to more than 400 euros, and then remove the U24, resistance to 0.7K to 0.9K is normal. If it is short-circuited, it will be scrapped. Water shortage 1.2 (FOR) measured: Q4 related to WL, Q5 is bad.
20, EV2000 control board troubleshooting:
Power on POFF: Measuring U1 76,77 feet or C19, C18 normal voltage is 1.6V, as normal, DSP bad; such as low voltage (such as 3.8V, 0.5v), U19, U20 bad.
No display: 3.3V Q10 pin 3 and GND resistance is small, normal 0.6K.DSP bad. No display: Measuring U24's 8-pin is only 1.5V, normal is 2.5V. Measuring L3 is unreasonable and L3 is bad. Otherwise DSP is bad.
No display: Measure the short circuit between pins 4 and 11 (+-15V) of U17-LM324. After touching LM324, it is found that U17 and U18 are a little hot, and they are not short-circuited after removal. U17 and U18 are bad.
No display: 5V short circuit. U6 is bad. Show E004: Measure U1 76,77 feet or C19, C18 voltage is 3.8V. Normal is 1.6V, U19, U20 is bad.
A press to run the bomber: U5, U9 bad. VRF without 10V: U42, C107, C108 bad.
Report E010: U-lamp on tooling test is always on: U9 is bad. The BRAKE light is always on, and the relay K1 sounds (ie, the fault relay pulls in): U6 is bad.
E019: Measure the voltage of the 8th pin of IC U19, U20 and U21 corresponding to IU, IV and IW respectively. It is 0.34, 0.40, 6.46. Therefore U21 is bad.