YASKAWA MOTOMAN-MPX2600 Instructions Manual page 107

180788-1CD
MPX2600
Fig. 10-16(c): Enclosure Protection Flow Chart
Is the operating air kept
at 5 kPa or more?
- Is the operating air kept at 50 kPa or less?
<More than 50kPa>
- The pressure which exceeds the setting value
is released automatically from the relief valve
to keep the pressure in the piping constant.
*Abnormal Pressure Mode
1.Abnormal pressure (LOW)
In case the pressure in the protective gas line drops and the pressure detector (PS1) is opened,
the hardware circuit (power control cirtuit, purging control relay, and encoder separation board) is turned
OFF. And the servo unit-, encoder- and painting device-power sources are autmatically shut down.
In case the abnormal pressure (LOW) occurs during the purging mode, the master valve is automatically
shut OFF to prevent the dangerous gas from infowing.
"Abnormal Pressure (LOW)" is displayed on the programming pendant and the alarm lamp on the DX200
is lit.
2.Abnormal purging
During the purging, if the pressure in protective gas line drops and the pressure the detector (PS3)
is opened, the hard ware circuit (power control circuit, purging control relay, and encoder separation board)
is turned OFF. When the power supply of the servo unit and the encoder is turned OFF automatically, the
master valve is closed at the same time.
"Abnormal Purging" appears on the programming pendant and the alarm lamp on the DX200 is lit.
10 Maintenance and Inspection
10.3 Inspection of the Explosion-Proof Device
C
Start Operation Mode.
N
Y
Shut-down mode
- Execute abnormal pressure mode.
(Abnormal Pressure(LOW))
- The power sources for the servo unit, and
encoder are automatically shut down.
- "Abnormal Purging (LOW)" apperas on the
programming pendant and the alarm lamp on
the DX200 is lit.
HW1484370
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