SiplaceX4_en - 第185页

1 - 39 S tudent Guide SIPLACE X Edition 09/2005 4 Servic es to the machine 39 4.3.3.5 Proportional valve, proportional regulator X58 When switching the machine on at the main switch, air is supplied to all placemen t hea…

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Student Guide SIPLACE X
4 Services to the machine Edition 09/2005
38
4.3.3.4 Main Valve , main regulator X59 for machine components
After the machine is switched on with the main switch, the valve is powered and air runs into the
system. Opening any cover, for e.g, has no effect to the air supply. Only when the 24V power is
missing or the machine is switched off, the valve close and
no air is supplied to the docking sta-
tion (co-table), as well as via X60 to the tape cutter and PCB transport system. If the pressure is
too low, the A/D converter provides an output of 24 VDC. This signal is supplied via the CAN I/O
module in section 4 (pressure too low) and via the CAN bus to the machine controller. The valve
X59 is controlled by K1, located in section 4, sub-distributor.
The pressure for this 5/2 valve is manually adjusted by a throttle to 5 +0.1 bar.
NOTE: This main pressure regulator can be damaged if the machine is turned on without com-
pressed air supplied. Therefore if the compressed air supply fails, turn of the machine.
Fig. 4.3 - 7 Relay K1 section 4 and main valve
main valve
pressure
sensor
X20ra
24 V
CAN I/O section 4
X7rb
output valve OFF
GND
air ON / OFF
X3rb
input message pressure too low (threshold 4.5 bar)
X1ra
MC
X59
X59
power supply 24 V
section 4, relay K1
K
1
main valve
main pneumatic unit
1 - 39
Student Guide SIPLACE X
Edition 09/2005 4 Services to the machine
39
4.3.3.5 Proportional valve, proportional regulator X58
When switching the machine on at the main switch, air is supplied to all placement heads.
After the reference run is performed, the air can be switched of by software after a certain time
(as standard 2 min.) and no air run through the vacuum system of the placement heads.
It automatically regulates the internal machine pressure to 4.8 +0.1 bar for the placement heads.
Included within this regulator block is a pressure sensor which monitors the outgoing air pres-
sure. If the pressure is too low, the A/D converter provides an output of 24 VDC. This signal is
supplied via the CAN I/O module in section 4 (pressure too low) and via the CAN bus to the
machine controller. The valve is controlled by relais K2, located in section 2, main distributor,
relay K1 is not used.
Fig. 4.3 - 8 proportional valve X59 ON/OFF process
Fig. 4.3 - 9 poroportional valve in main pneumatic unit
X7qb X4qb
X21qa
24 V
CAN I/O section 2
o
u
t
p
u
t
v
a
l
v
e
OF
F
GND
power supply 24 V
air ON / OFF
input message pressure 4.5 +O.K
X1qa
MC
prop. valve
pressure
sensor
X58
X58
Main pneumatic unit,
proportional valve
Main pneumatic unit
Section 2, relay K2
Relay
K2
K
2
Relay K1
(not used)
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Student Guide SIPLACE X
4 Services to the machine Edition 09/2005
40
4.3.3.6 Safety valve X60
Safety valve for controlling the compressed air for transport and tape cutter. Air supply for trans-
port and tape cutter is only present, after the start button is pressed and all safety requirements
are fullfilled (safety loop closed).
Fig. 4.3 - 10 safety valve tape cutter
Fig. 4.3 - 11 safety valve location in main pneumatic unit
X2qa
X71qa X22qa
tape cutter 3
X17qa
tape cutter 2
SSK
X16
X71ra X22ra
tape cutter 4
X17ra
tape cutter 1
X21ra
2
4
V
power supply
24 V
5+0.1 bar
tape cutter
safety valve
5+0.1 bar
5+0.1 bar
main pneumatic unit
X60
main pneumatic unit
safety valve