Height control and following

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• The pierce heights at every stage are correct, which points at the datum capacitance the height controller captured — that is what makes the following height wrong.
  Original record

  各级穿孔高度设置合理，表明问题点在于调高器采集的基准面电容值不准确，导致调高器跟随高度异常。

• The F following indicator only appears after following for a while. That points to an unstable height controller producing the following pauses.
  Original record

  如果跟随下去过一段时间才出现F，出现了F立即开始下一步了。基本上就可以判断是调高器跟随不稳定，导致的跟随停顿。

• Switching following on and off repeatedly, the Z coordinate keeps decreasing — the datum is drifting.
  Original record

  不断开关跟随，跟随时的Z轴坐标不断减小。

• A DIF value below 30 means the jitter is not interference on the capacitive sensor. Re-calibrate the height controller: make sure there is a sheet under the head, press Follow on the controller and watch whether the head jitters.
  Original record

  值小于30说明抖动不是因为电容传感器被干扰引起的，先将调高器重新标定一次，保证切割头下方有板子，点击调高器上的跟随开按钮，观察切割头是否有抖动

• On the height controller press F1 to enter calibration, then press 2 and follow the prompts to redo the floating-head calibration. This rebuilds the mapping between nozzle capacitance and distance from the sheet.
  Original record

  首先在调高器上按F1进入标定界面，再按数字2，按照提示进行浮头标定，重新建立碰嘴电容值与离板面距离的对应关系。

• Press F1 on the height controller and follow the on-screen prompts to redo the floating-head calibration.
  Original record

  在调高器上按F1进入标定界面，然后按照调高器上的提示重新进行浮头标定。

• If the calculated value is negative, enter it as the parking coordinate in the height controller — negative on a bus system, positive on a non-bus system.
  Original record

  若计算出为负值，请将调高器中的停靠坐标设为计算值，注意总线系统填负值，非总线填正值。

• A datum capacitance increase under 1000 can be absorbed automatically by the height controller's real-time calibration, which compensates thermal drift.
  Original record

  本体电容变大1000以下，可以通过调高器的实时标定功能自动补偿温漂。

• A datum capacitance decrease under 1000 is the same thermal-drift case — let the real-time calibration compensate it.
  Original record

  本体电容变小1000以下，可以通过调高器的实时标定功能自动补偿温漂。

• If the Z travel in the height controller is configured correctly, open the platform configuration tool and check whether a separate Z travel has been enabled for high and low tables.
  Original record

  如果调高器Z轴行程设置正确，则打开平台配置工具，检查是否启用了高低台不同Z轴行程。

• Jog the head down and hold it about 3 mm above the sheet, then watch the DIF reading.
  Original record

  点动切割头静止靠近板面3mm距离，观察dif

• A DIF value above 30 proves there is electromagnetic interference in the system. Power down the XY servos, the compressor, the VFD and the other heavy consumers, then re-check whether DIF falls below 30.
  Original record

  值大于30则证明系统中存在电磁干扰，我们可以将XY轴伺服电机、空压机、变频器等大功耗用电设备断电，再观察DIF值是否减小至30以内

• Above 30, go straight to the machine's earthing rather than the sensor.
  Original record

  值是否超过30，超过30需要排查机床接地

• Watch DIF for about 10 seconds and judge the maximum value, not the average — spikes are what trip the alarm.
  Original record

  判断DIF的最大值是否超过30

• Close the shutter and simulate a cut with the gas on, watching whether the head jitters. That separates a gas/mechanical cause from a beam cause.
  Original record

  关闭激光器光闸，在出气的状态模拟加工，观察切割头是否抖动

• If the head does not jitter with gas on, the motion and gas sides are clean and the fault is on the beam side.
  Original record

  出气状态下切割头不抖

• If the head does jitter with gas on, the sensing head may be damaged or badly seated — refit it or replace the affected part.
  Original record

  出气状态下切割头抖动，则可能是切割头的传感头内部有损坏或未安装好，请重新拆装传感头或更换相应配件

• That pattern points to poor contact in the sensing head — replace the sensing head and retest.
  Original record

  可以判断是传感头接触不良导致，建议更换传感头再重新测试。

• Poor contact in the ceramic body — replace it and retest before touching parameters.
  Original record

  可以判断是陶瓷体接触不良，建议更换陶瓷体重新测试

• An RF cable problem — replace the cable and retest.
  Original record

  可以判断是射频线问题，建议更换射频线再重新测试

• Also check that the RF cable is the original one from the controller vendor; third-party cables are a recurring cause here.
  Original record

  则检查一下射频线是否为柏楚原装的射频线，如下图

• If the capacitance changes by less than 100 when gas is switched on and off, gas is not what is triggering the alarm.
  Original record

  吹气前后，电容C值变化小于100，说明不是气体引起的报警。

• A datum capacitance alarm at the very start of a job: check whether the sheet is film-covered.
  Original record

  刚开始加工就出现本体电容变小报警请确定加工板材是否是带膜板材

• An alarm that only appears after cutting for a while is probably thermal drift — diagnose it from the size of the capacitance change.
  Original record

  加工一段时间后出现报警则可能是温度变化引起的电容变化，可以通过本体电容变大的值来排查。