The regulated power supply of the laser cutting machine is mainly to observe the compensation transformer to see whether the temperature rise of the voltage regulating transformer is normal, and whether there are abnormal phenomena such as overheating and coil discoloration.
Whether the contact of the carbon brushes is maintained well, monitor whether the input and output voltages are normal, whether there is overload, etc.
In order to carry out better maintenance, generally every three months, the dust and dirt of each part of the voltage regulator of the metal laser cutting machine should be removed;
Check whether the chain drive system works normally, add oil to the sprocket, adjust the tightness of the chain, check whether the carbon brush holder is inclined or stuck, and adjust if found.
In addition, it is also necessary to check whether the electrical contacts of the metal laser cutting machine are damaged;
If it should be replaced or repaired in time:
Check whether the column-type voltage regulating transformer operates flexibly and whether the carbon brushes are in good condition, and replace the damaged or severely worn carbon brushes in time;
If there is burns or carbon brush powder on the contact surface of the coil, use No. 0 fine sand skin to polish and smooth it in time and remove the dust.
The regulated power supply protection function of the laser cutting machine:
When the overvoltage output exceeds 10% of the rated voltage (adjustable), the output power will be cut off after a delay of 3-5 seconds
Under-voltage output is lower than the rated voltage -15% (adjustable), delay 3-5 seconds to cut off the output power
Delay 2 seconds to cut off the output power
When the overcurrent exceeds the rated output current, the output power will be cut off after a delay of 3-5 seconds
Short circuit When the load device is short-circuited, cut off the output power
When there is an error in the reverse phase three-phase electrical phase sequence, the machine will alarm and cut off the output power
When there is a lack of three-phase power, the machine will alarm and cut off the output power
So what should we pay attention to when we usually use regulated power supply?
1. The first is operation, according to the actual required voltage and current, adjust the knob or button;
If the required voltage is in the direct gear, then the main knob should be adjusted to the first position, and then adjust the fine knob, for example, 13V is required;
Then the main knob should be adjusted to 15V first, and then adjusted through the auxiliary knob.
The main knob should not be adjusted to 10V, which will cause the voltage to not reach 13V.
2. If the load needs to be used, it should be adjusted to the required voltage before connecting to the load.
3. In the process of using DC regulated power supply, when it is necessary to adjust the "coarse adjustment" file;
The load must be disconnected first, the voltage must be adjusted and then reconnected to the load.
4. When we use it again, when the load is short-circuited or overloaded to cause protection;
The load should be disconnected first, then press the "Reset" button to restart the voltage;
The voltage can be restored to normal work, wait for one of the faults to be eliminated, and then connect to the load.
