X3_X4_Series machine.pdf - 第76页

2 Operational safety User manual SIPLACE X-Series 2.7 Residual voltages and discharge time s in the machine Software V ersion SR.601.xx 11/2005 US E dition 76 Fig. 2.7 - 2 Measuring points on the power supply unit 2 2.7.…

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User manual SIPLACE X-Series 2 Operational safety
Software Version SR.601.xx 11/2005 US Edition 2.7 Residual voltages and discharge times in the machine
75
2.7 Residual voltages and discharge times in the
machine
If the emergency stop button is pressed or the placement system is switched off, the 250 VDC link
voltage for the gantry axes and the 145 VDC link voltage for the star axes are reduced to harmless
residual voltages in a very short time.
WARNING 2
The placement system is supplied with 3 x 208 VAC, 3 x 230 VAC, 3 x 380 VAC, 3 x 400 VAC or
3 x 415 VAC ± 5 %, 50/60 Hz mains voltage. This means that some parts of the system carry
potentially lethal voltages - even when switched off at the main power switch. Incorrect handling
of the placement system can therefore result in death or severe injury or considerable damage to
equipment.
Æ Always follow the applicable accident prevention and DIN regulations (particularly DIN EN 60
204, part 1).
Æ The guards over the power supply unit and the axis unit must ONLY be opened by appropri-
ately qualified and trained personnel.
2
Fig. 2.7 - 1 Power supply unit
(1) Padlock with bolt in the cover
(2) Main power switch
(3) Power supply unit behind the cover
(4) Axis unit
2 Operational safety User manual SIPLACE X-Series
2.7 Residual voltages and discharge times in the machine Software Version SR.601.xx 11/2005 US Edition
76
Fig. 2.7 - 2 Measuring points on the power supply unit
2
2.7.1 Operating voltages, residual voltages and discharge times after pressing
the emergency stop button
2
2
Pins X11 and X13_1
measured to X12 (GND)
Voltage in
normal mode
Residual voltage after
emergency stop
Discharge
times
X11 + 250 VDC < 10 VDC 7 sec
X13_1 + 145 VDC < 10 VDC 50 sec
Pin X13_4
measured to pin X3_7 (-)
Voltage in
normal mode
Residual voltage after
emergency stop
Discharge
times
X13_4 + 40 VDC + 40 VDC -
User manual SIPLACE X-Series 2 Operational safety
Software Version SR.601.xx 11/2005 US Edition 2.8 Disabling the compressed air supply and discharging the pressure
77
2.7.2 Residual voltages and discharge times after switching off at the main switch
2
CAUTION 2
To avoid losing data, assess the following criteria before switching off your automatic placement
system (apart from in emergencies):
– Has the placement system finished transmitting machine, setup and panel data?
– Has the placement system finished processing the PCB?
– Has the placement system completed the run-up phase?
2.8 Disabling the compressed air supply and discharg-
ing the pressure
The compressed air working pressure of the placement system is set to 0.50 ± 0.025 MPa (5.0 ±
0.25 bar). The position of the compressed air unit is indicated by item 1 in Fig. 2.8 - 1
. The com-
pressed air supply to the machine can be interrupted using the shutoff valve (item 2 in Fig. 2.8 - 1
).
Æ Use the machine key to release the cover lock.
Æ Lift off the cover (see Fig. 2.8 - 1).
Æ Turn the lever on the shutoff valve (item 1 in Fig. 2.8 - 1) from the vertical to the horizontal
position.
Æ Watch the working pressure gauge (item 5 in Fig. 2.8 - 1). When the automatic placement
system is switched on, the pressure discharges to 0 MPa (0 bar) within 1 minute.
CAUTION
When the machine is switched on, do not use the stop valve to interrupt the compressed air sup-
ply for more than 30 minutes. If you need to shut off the pneumatic system for longer in order to
carry out preventive maintenance or servicing work, you must switch the placement system off at
the main switch and disconnect it from the power supply.
Pins X11, X13_1 and X13_4
measured to X12 (GND)
Residual voltages when
main power switch is off Discharge times
X11 < 10 VDC < 7 sec
X13_1 < 10 VDC < 50 sec
X13_4 < 10 VDC < 2 sec