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NOTE
The heat sink of the drive will generate high temperature and should not be touched.
When operating the drive, follow the steps specified in the Electrostatic Discharge Prevention (ESD) procedure. Otherwise, the internal circuit of the
drive may be damaged due to static electricity.
Do not change the circuit of the drive. Otherwise, the drive will be damaged. Therefore, the repair will not be covered by the company. The company
will not be responsible for it.
After wiring the drive and other machines, please confirm that all wiring is correct. If the wiring is incorrect, it may cause damage to the drive.
Please confirm the steering under the no-load of the motor. The wrong direction of rotation may cause personal injury or property damage.
Do not run a machine that has been damaged. If the machine is obviously damaged or parts are missing, do not connect or operate it to avoid an
accident.
7.2 Overhaul
Electronic equipment consists of various electronic components, etc. If the relevant device is used for a longer period of time, it may cause characteristic
changes or malfunction. In order to prevent such failures, preventive maintenance such as routine maintenance, regular maintenance, and parts
replacement must be performed.
It is recommended that the machine be inspected every 3 to 4 months after installation. The inspection cycle of each machine varies according to working
conditions, environmental conditions and usage conditions.
Shorten the inspection cycle if:
High temperature, high altitude environment;
Start and stop the environment frequently;
There is an environment where AC power and load have large fluctuations;
An environment with excessive vibration or shock;
An environment in which dust, metal dust, salt, sulfuric acid, and chlorine are present;
Bad preservation environment.
Please follow the maintenance items in this chapter to perform regular maintenance work.
◆Daily inspection
In order to avoid the deterioration of the drive function and product damage, please check and confirm the following daily items and track the effective
records.
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.
Check item
Check content
Surroundings
Is the installation environment suitable?
Whether the power supply voltage meets the
Power supply
requirements and whether there is a lack of phase
Does the motor have abnormal vibration or abnormal
Motor
sound?
Whether the output current of the drive is higher than
Load
the rated value of the motor or the drive for a certain
situation
period of time.
Whether the drive and the motor have abnormal heat
cooling
and discoloration.
system
The cooling fan is working properly.
◆Periodic inspection
Under normal circumstances, a regular inspection is carried out in 3 to 4 months, but it is necessary to consider the shortening of the inspection cycle in
combination with the use situation and working environment. The inspection is done with relevant confirmation and effective record.
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.
Check item
overall
wiring
Check content
Environmental inspection, whether there is dirt or dust.
Whether there is a part that changes color due to
overheating aging;
Is there any damage, deformation, or abnormal operation
of the device?
Whether the wires and their joints are discolored,
damaged, or cracked.
Processing method
Eliminate sources of pollution or improve the installation environment.
According to the nameplate requirements, the corresponding power supply
Confirm the connection with the machine;
Tighten the screws at the joint;
Do lubrication treatment.
Confirm whether it is overloaded;
Confirm that the motor parameters are set correctly.
Confirm whether it is overloaded;
Tighten the screws;
Check if the heat sink and motor of the drive are dirty;
Check if the fan is blocked or damaged.
Processing method
Confirm whether the relevant cabinet doors can be
closed;
Remove dirt or dust and improve the operating
environment.
Replace the relevant device;
If it cannot be repaired, the entire drive needs to be
replaced.
Repair or replace the wires.
51
Overhaul and Maintenance
AC10 Series Frequency Inverter Technical Manual
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