10 Maintenance and Inspection
10.3Inspection of the Explosion-Proof Device
10-25
180788-1CD
HW1484370
MPX2600
Fig. 10-16(b): Enclosure Protection Flow Chart
A
B
Turn the breaker OFF by manual.
Stop supplying the protective gas
into the pressure switch unit.
Has 2
minutes passed
since the purging
air mode was
started?
Start counting the purging time (four minutes
*1
).
Has 4 minutes passed since the
purging count was started?
Switch Purging Mode to Operation Mode after executing
the following steps.
1. Switch the pressure from purging to operation.
2. Close the master valve.
3. “Purging Completion” message appears on the
programming pendant
4. Supplying of the power becomes available to motors,
brakes and painting device.
After these steps, the mode is switched to the
operation m ode.
Purging Mode
C
D
Y
N
Y
Start Purging Mode.
1.Switch the operation pressure
to the purging pressure.
2.Release the master valve.
When the purging air is 20 kPa
or more, has the flow reached
320 L/min?
Abnormal Pressure Mode
- Execute Abnormal Pressure
Mode. (Abnormal purging)
- 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.
When the purging air is 20 kPa
or more, is the flow kept at
320 L/min?
Does the abnormal
pressure occurs in the first
time after the first
restarting?
Purge
reset.
Y
N
N
Y
Y
N
N
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