Voltage stabilized power supply in the laser cutting machine protection application introduction
The regulated power supply of the laser cutting machine is mainly to observe the compensation transformer to see whether the temperature rise of the regulator transformer is normal, whether there is overheating, coil discoloration and other abnormal phenomena.
Whether the contact of the carbon brush is maintained well, monitor the input and output voltage is normal, there is no overload phenomenon.
In order to carry out better maintenance, generally every three months to remove the dust and dirt of the various parts of the metal laser cutting machine voltage regulator;
Check whether the chain drive system works normally, refuel the sprocket, adjust the chain tightness, check whether the carbon brush holder is tilted, jammed phenomenon, if found should be adjusted.
In addition, check whether there is damage to the electrical contacts of the metal laser cutting machine;
If so, they should be replaced or repaired in time:
Check whether the column regulator transformer operates flexibly, whether the carbon brushes are intact, and replace the carbon brushes that have been damaged or badly worn in time;
If there is burns or carbon brush powder on the coil contact surface, the No. 0 fine grit sandpaper should be polished smooth and remove the dust in time.
The laser cutting machine's regulated power supply protection function:
Over-voltage output exceeds 10% of the rated voltage (adjustable), the output power supply will be cut off with a delay of 3-5 seconds.
Undervoltage output is lower than the rated voltage -15% (adjustable), delay 3-5 seconds to cut off the output power supply
Cut off the output power supply with a delay of 2 seconds
When the overcurrent exceeds the rated output current, cut off the output power supply with a delay of 3-5 seconds.
Short circuit when the load equipment short circuit, cut off the output power supply
Reverse equivalent to three-phase power sequence error, the machine alarm and cut off the output power supply.
Lack of equivalent three-phase power phase, the machine alarm and cut off the output power supply.
Then we usually need to pay attention to what matters when using voltage stabilized power supply?
1, the first operation, according to the actual required voltage and current, adjust the knob or button;
If the required voltage in the gear directly, then the main knob should be adjusted to the bit, and then adjust the fine knob, for example, the actual need for 13V;
Then the main knob should be adjusted to 15V first, and then adjusted by the auxiliary knob.
The main knob should not be adjusted to 10V, which will result in the voltage not necessarily reaching 13V.
2, if you need to use the load, then it should be adjusted to the required voltage before accessing the load.
3, in the process of using DC regulated power supply, encounter the need to adjust the "coarse" gear;
Must first disconnect the load, the voltage adjustment before re-connecting the load.
4, we then use the process, meet the load short-circuit or overload caused by the time of protection;
Should first disconnect the load, and then press the "recovery" button to restart the voltage;
Voltage can be restored to normal operation, wait for a troubleshooting, and then access the load.
