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Overhaul and Maintenance
Terminal block
Mechanical devices such as
electromagnetic contactors and
relays
Diode, IGBT (power transistor)
Electrolytic capacitor
Brake option
A printed circuit board
cooling fan
heat sink
Vent
Keyboard display
7.3 Maintainence
All equipment and components have a service life. Proper maintenance can ensure an extended service life, but it cannot solve equipment and equipment
damage. Replace the device that meets or is about to reach the end of its life as required.
Note: Do not perform wiring, inspection or repair work while the power is on. Be sure to turn off the power to all machines before starting work. After the
power is turned off, there is still residual voltage in the capacitor inside the drive. It is necessary to confirm that the main circuit voltage has dropped to a
safe level. After 5 minutes, perform related operations to avoid personal accidents.
Device name
Fan
Electrolytic capacitor
Printed circuit board
7.4 Replace the cooling fan
When replacing the cooling fan, please use the original fan and purchase the original fan. Please contact the agent who purchased the product or the sales
department of the company. There are models with multiple cooling fans in the drive. In order to maximize the service life of the product, all fans must be
replaced at the same time.
The replacement of other devices is very strict with the maintenance technology and product familiarity, and must be strictly tested before being put into
use. It is not recommended to replace other internal components. If you do need to replace it, please contact the agent where you purchased the product
or the sales department of the company.
Note: Do not perform wiring, inspection or repair work while the power is on. Be sure to turn off the power to all machines before starting work. After the
power is turned off, there is still residual voltage in the capacitor inside the drive. It is necessary to confirm that the main circuit voltage has dropped to a
safe level. After 5 minutes, perform related operations to avoid personal accidents.
7.5 Replace the drive
Note: Do not perform wiring, inspection or repair work while the power is on. Be sure to turn off the power to all machines before starting work. After the
power is turned off, there is still residual voltage in the capacitor inside the drive. It is necessary to confirm that the main circuit voltage has dropped to a
safe level. After 5 minutes, perform related operations to avoid personal accidents. Non-electrical construction professionals should not perform wiring,
installation, maintenance, inspection, component replacement or repair work. Otherwise there is a danger of electric shock.
Note: When operating the drive or when disassembling the printed circuit board, follow the steps specified in the electrostatic precautions (ESD). If the
operation is incorrect, the internal circuit of the drive may be damaged due to static electricity.
◆Precautions when wiring the main circuit terminal block
1) Please use copper wire. Wires other than copper wire such as aluminum wire cannot be used.
2) Be careful not to allow foreign matter to enter the terminal block of the terminal block.
3) Please strip the wire end of the wire at the length of the bare wire at the end of the line as specified in this book.
4) Do not use bent or deformed wires. Cut off the end of the wire that has been bent and deformed by the connection before using it.
5) Do not perform welding when using stranded core wire.
6) When using stranded core wire, do not make wire whiskers appear at the joint. But do not over-twist the stranded core.
7) The wires should be inserted deep into the terminal block. After the wire end cladding is peeled off by a predetermined length, the cladding portion can
enter the resin protection hole.
8) The tightening torque of each terminal is different. Please tighten the screws according to the specified tightening torque.
9) Use tools such as a torque wrench that matches the screw. Wiring the screw terminals requires a flat or hexagonal tool. Please refer to the recommended
AC10 Series Frequency Inverter Technical Manual
Is the terminal worn, damaged or loose?
Whether the terminals are worn, damaged or in poor
contact;
Is the screw loose?
Whether it is contaminated with garbage and dust
Whether there is liquid leakage, discoloration or cracking;
Whether the safety valve has been arched out, whether
there is a bulge, whether there is crack or leakage.
Whether the insulation material is discolored due to
overheating
Whether there is odor, discoloration or significant rust;
Whether the plug is plugged in effectively;
Whether it is dusty or oily.
Whether there is abnormal vibration or abnormal sound;
Whether there is damage or missing leaves.
Whether it is contaminated with garbage and dust;
Is it dirty?
Ventilation inlet and outlet are blocked by foreign matter
Whether the screen display is correct;
Is the operation button dirty?
Tighten the screws;
Replace damaged screws or terminals.
Tighten the screws;
Replace the screws or terminals;
If it cannot be replaced effectively, the drive needs to
be replaced.
Remove rubbish or dust to avoid touching parts.
Replace the electrolytic capacitor;
If there are damaged parts that cannot be repaired or
replaced, replace the entire drive
When discoloration occurs, check if the wiring is
defective.
Re-plug the plug;
Replace the board;
Do not use solvents when cleaning the board;
Use a vacuum cleaner to remove rubbish or dust to
avoid contact with parts;
If there are damaged parts that cannot be repaired or
replaced, replace the entire drive.
Clean or replace the fan
Use a vacuum cleaner to remove rubbish or dust to
avoid touching parts.
Clear obstacles, dust
If there is a problem with the screen or operation keys,
please contact our agent or sales person in charge for
cleaning.
Life cycle
2~3 years
4~5 years
8~10 years
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