Yes, usually use 99.99% nitrogen/argon.

1. Regular cleaning: Clean the workbench, equipment surface, laser source, and optical components regularly to avoid dust and dirt accumulation; Check and clean the water quality and water circuit of the water cooling system regularly.
2. Check the equipment: Check the electrical components and circuits regularly to ensure good connections and no damage.
3. Replace consumable parts: Replace consumable parts such as lenses and nozzles in a timely manner.
4. Operate safely and in accordance with safety regulations and operating manuals.

System alarm analysis
When system checked Z+/Z- limit input is enabled, the alarm happens. The reason includes: Z+/Z- sensor detect something. Z+/Z- sensor is broken. Or it is used for long time, there is oil contamination and powder on the surface. The parameter of“Limit logic” can be set to normal open or normal close The wiring is not correct.
1.Out of Z range
When Z moves large then range, which is a parameter of system, the alarm will be throw out. If it is wrong alarmed, take attention in the range parameter, if the system returned origin, and if the encoder feedback is correct.
2.Z- limit continue enable
When system is returning origin, it moves back when z- sensor is enabled, but can't quit the z- sensor enable area, the alarm happens. Take attention if the sensor is broken.
3.Z+ limit continue enable
When system is returning origin, it moves back to positive axis,but come to the z+ sensor enable area, the alarm happens. Take attention whether the Aligning coordinate or Dock coordinate is too large.
4.Servo alarm
When system checked NO. 14 input ALM is enabled, which reflect the servo alarm status, the alarm is shown on the screen. The reason of servo alarm includes: The servo alarms. The “Servo Type” parameter is not correctly set. Wiring is not correct. Electrical system disturbs the wire.
5.Encoder moves abnormally
When system keeps in stop status, the encoder feedback value changed, there will be this alarm. The reason lead to the alarm includes: The axis vibrates by outside force. Wiring wrong, the zero speed signal does no effect. Servo rigidity is very low. The encoder wire is disturbed. The shield is needed, and should be connect to the ground. Add some wire magnet ring is better.
6.Encoder no response
The system try to move, send out speed command as voltage, but the encoder feedback value does not change at all. The alarm happens. The reason includes: Wring error. Servo type is wrong. Servo must have speed control mode. Servo parameter is not correctly set. It should be switched to speed control mode.
7.Encoder deviation large
When thedifference between destination position and feedback position is too large, the alarm happens. It reflects the servo can't follow the speed command correctly. The reason includes: Encoder feedback direction is wrong. The relative parameter should be modified. Wiring error or disturb make the encoder feedback wrong. The mechanic is stuck, the really position can't follow the destination position.
8.Capacity is 0
When system can't check the capacity of the spray, the capacity value is shown as 0 on the screen. The following situation may cause the alarm: The spray touched the board below. There is water in cutting head. The local capacity of the cutting head is large, which is out of the check range of the preamplifier. The preamplifier is broken. Connection is not fixed. In the internal of cutting head, the positive of capacity (spray) is short circle with the negative of capacity (the shell of machine).
9.Local capacity smal
When local capacity changes less, the alarm happens. The reason includes: Connection or some part is changed or moved. You can do calibration again. Laser shoots on the spray, the temperature gets very high is short time. Man's hands can‟t stay on the pray. Blow leads to the change of distance of positive pole (spray) and negative pole (shell of the machine). Connection is not fixed. The parameter of calibration range is low can also lead the alarm. In 2D mode 15mm is recommended. And 10mm is recommended in 3D mode. One of the reason is the cutting fire and electronic affects the capacity sensor when the boardmaterial is stainless steel.If there is plastic film on the surface of steel, remove the film first. Check if the machine is connect to the ground well. The following height should be large than 0.5 mm. Improve the blowing pr
10.Follow deviation large
When system check the H height (the distance between spray and board) changes large in short time in follow state, the alarm happens. The relative parameter is interpreted in Chapter 2.5.5. The alarm reason includes: Cut out of the board. There is nothing to follow below. Board is vibrating heavily.
11.Sample capacity large
When sampled capacity is larger than the largest capacity in calibration, the alarm happens. The reason includes: The spray touched the board below. There is water in cutting head. Connection is not fixed.In the internal of cutting head, the positive of capacity (spray) is short circle with the negative of capacity (the shell of machine).
Expiration of timeThere is no more time permitted to use this system.
12.Battery lost lock
When unpacked the battery of the unregistered controller, the alarm happens.User can remove the alarm by registering the controller.
Jog nearby boardWhen jogging the follower near the board, the alarm happens.

Amplifier casing or controller FG pin are poorly connected to the machine casing.Machine casing is the negative electrode of the measured capacitor. When the conductivity of amplifier casing and machine casing is poor, the AC impedance between the positive and negative electrodes of the capacitor is large. Thus, the load of measured circuit varies, which may lead to larger measurement error. If good mechanical connection cannot be achieved, users can add a wide wire(copper material is better) between amplifier metal casings to reduce AC impedance. The AC impedance of single-point connection is greater than that of good mechanical connection. It is required to make the AC impedance less than 10 ohms. Too large servo rigidityMechanical shock and obvious vibration may be caused during the movement due to too large servo rigidity. For example, it is recommended that the servo rigidity of Panasonic MINAS A5 series should not be above Level 19. Too large following speed levelVibration may be caused during the movement due to too large following speed level. Level 3 to 7 are recommended. Poor follower calibrationWhen the data stability and smoothness of capacitance and position stored in BCS100 is poor, vibration will be caused during the following movement. Please do follower capacitance calibration again, until the stability and smoothness becomes excellent or good. If there is a large interference at the field, users can appropriately reduce the parameter of“ servo gain coefficient”.

Too small calibration range or too large Z-axis speed
The smaller the calibration range, the smaller the deceleration distance of following movement. If Z-axis speed is too large and it is not reduced to 0 when the follower flows to place, overshoot will be unavoidable. The greater the Z-axis speed is, the greater the overshoot is. When Z-axis speed is greater than 100mm/s, it is recommended to set the calibration range to be 15mm. When Z-axis speed is greater than 250mm/s, it is recommended to set the calibration range to be 20 to 25mm. Too small servo rigidityServo response may lag behind the control signals of controllers due to too small servo rigidity, and thus the follower will hit the board. For example, it is recommended that the rigidity of Panasonic MINAS A5 series should not be below Level 13. Capacitance calibrationThe follower will hit the board when there is a large deviation between the capacitance stored in BCS100 and actual measured capacitance. For example, the nozzle temperature increases a lot or the connection is not stable. Users need to first find the reason, and then calibrate capacitance again after solving the problem. No preheatingPlease preheat the amplifier for 2 to 5 minutes, and then operate BCS100 controller after the sampling capacitance in the amplifier becomes stable. The locking nut of ceramic part is not connected tightly.
The locking nut of ceramic part is not connected tightly, which may lead to instable detecting capacitance.