10-24
180788-1CD
HW1484370
10 Maintenance and Inspection
10.3 Inspection of the Explosion-Proof Device
MPX2600
10.3.2 Enclosure Protection Sequence
Fig. 10-16(a): Enclosure Protection Flow Chart
DANGER
When an enclosure protection sequence error occurs, stop using the
manipulator, and take the following measures in accordance with the
sequence below.
If the error is not resolved, contact your YASKAWA representative.
Start Preparation Mode.
Check the pressure switch unit.
- Troubles on devices such as master valves.
- Air leakage at the relief valve and
the connections
A
Re-connect the tubes
Tighten the bolts for covers
Change the enclosure
Change the pressure switch unit.
Preparation Mode
Y
Y
N
N
Y
N
Our enclosure protection sequence is composed of the following four modes.
1.Preparation Mode
2.Purging Mode
3.Operation Mode
4.Shut-down Mode
Supply the protective gas
after the following inspection.
-Loosen bolts to enclosures.
-Any damages to the enclosure.
Start supplying the protective gas into the pressure
switch unit.
The protective gas is regulated in proper values
by the reducer valve to operate, then supply to the
manipulator.
Change the setting values
within the values shown in
the left.
values of the pneumatics unit.
1.Pressure reducing valve for purging puressure
0.18 to 0.20 Mpa.
2.Pressure reducing valve for operating puressure
0.01 to 0.02 Mpa.
3.Primary pressure into the pressure switch unit.
) Check on the facility
:0.35 to 0.65 Mpa
prepared by user.
Check the setting
Turn ON the breaker of the controller by manual.
Purging mode is simultaneously
ready to start by turning the power ON.
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