7.UNITS B-70315EN/02
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7.9.3 Adjustment Method
7.9.3.1 Setting the gas supply pressure sensor
The gas supply pressure sensor is a sensor labeled PSW1 in the gas
controller.
(1) Turn on the power to the CNC. Never turn on the oscillator start
signal (RUN).
CAUTION
Remove the key of the switch not never to turn on
the start signal (RUN).
(2) Adjust the secondary pressure of the regulator of the external
laser gas supply unit (gas cylinder, for example) to 0.1 MPa.
(3) For how to operate the sensor, see the procedure described in
Subsection 7.9.3.3. Cancel the lock mode, then enter settings.
After making settings, check that the LED (green) of OUT1
lights.
(4) To check the settings, reduce the secondary pressure of the
regulator of the laser gas supply unit (gas cylinder, for example)
to 0.04 MPa, and check that the green LED of OUT1 of this
sensor goes off.
(5) After the check described in (4), set the lock mode again.
7.9.3.2 Setting the atmospheric pressure sensor
The gas supply pressure sensor is a sensor labeled PSW2 in the gas
controller.
(1) Turn on the main circuit breaker and power supply, then turn on
the power to the CNC. Then, power is supplied to the sensor.
Never turn on the gas pressure control start signal (RUN).
(2) For how to operate the sensor, see the procedure described in
Subsection 7.9.3.3. Cancel the lock mode, then enter settings.
(3) Remove the orange gas tube. This causes the atmospheric
pressure sensor to detect the atmospheric pressure.
(4) Clear the sensor to zero as described in Subsection 7.9.3.3.
Attach and secure the removed gas tube again. Check that the
green LED of OUT1 lights after setting.
(5) Turn on the gas pressure control start signal (RUN), and check
that the green LED of OUT1 of this sensor goes off after the
exhaust pump starts exhaust operation.
(6) After the check described in (5), set the lock mode again.