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2 Operational Safety User Manual S IPLACE S-25 H M 2.5 Energy state of the machine after switching off at the main switch Software Version SR.503.xx 04/2002 US Edition 92 2.5.1 Placement sy stem switched off at the main …

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User Manual SIPLACE S-25 HM 2 Operational Safety
Software Version SR.503.xx 04/2002 US Edition 2.5 Energy state of the machine after switching off at the main switch
91
2.5 Energy state of the machine after switching off at
the main switch
DANGER
Automatic placement systems from the SIPLACE family are powered with 3 x 400 V or 3 x
208 VAC (U.S.A. version) ± 5 %, 50/60 Hz mains voltage. This means that parts of the system
carry potentially fatal voltages - even when switched off at the main switch. Death, serious injury
or considerable damage may result if these placement systems are handled incorrectly.
Always follow the applicable accident prevention and DIN regulations (particularly EN 60204,
part 1). The guards over the control and servo units must ONLY be opened by appropriately qual-
ified and trained personnel. 2
Fig. 2.5 - 1 Position of the control unit, servo unit, main switch, service socket and compr. air unit
1 Main switch Q1 2 Compressed air unit
3 Service socket 4 Servo unit
5 Control unit 6 Power supply for control unit
7 Measuring unit, servo unit
GND
007
001 002 003 004 005 006
008 009
70VDC/
10VDC
30VDC 24VDC 12VDC 5VDC
70VDC
155VDC/0VDC
30VDC
7
6
4
2
3
1
5
GND
+24V
-15V
+15V
-12V
+12V
+5V
Fail
un-
switched
switched
2 Operational Safety User Manual SIPLACE S-25 HM
2.5 Energy state of the machine after switching off at the main switch Software Version SR.503.xx 04/2002 US Edition
92
2.5.1 Placement system switched off at the main switch, but still connected ...
The following table specifies the voltages of assemblies when the automatic placement system is
switched off at the main switch, but still connected to the mains supply. 2
2.5.2 Placement system switched off at the main switch and disconnected ...
The automatic placement system is unpowered, apart from slight residual voltages in the servo
unit. 2
2.5.3 Compressed air conditions in the machine after switching off at the main
switch
When the system is switched off at the main switch (item 1 in Fig. 2.5 - 1) or if the power supply
fails, the electrically-controlled main valve Y1 of the compressed air unit closes (Fig. 2.4 - 1,
page 90 ). The pressure will drop to 0 bar within 5 seconds. 2
Assembly Voltage
Main power filter Z1
Terminals L1, L2, L3
3 x 400 VAC (3 x 208 VAC)
Service socket
230 VAC(115 VAC)
Main switch Q1
Terminals 1, 3, 5
Terminals 2, 4, 6
3 x 400 VAC (3 x 208 VAC)
0 VAC
Servo unit (Item 7 in Fig. 2.5 - 1)
Test socket 001
Test socket 002
Test socket 003
Test socket 004
Test socket 005
Test socket 006
Test socket 008
Test socket 009
GND 007
< 12 VDC
< 12 VDC
< 12 VDC
0 VDC
0 VDC
0 VDC
< 12 VDC
< 12 VDC
Control unit (Item 6 in Fig. 2.5 - 1)
Test socket 5 V
Test socket + 12 V
Test socket – 12 V
Test socket + 15 V
Test socket – 15 V
Test socket + 24 V
GND
0 VDC
0 VDC
0 VDC
0 VDC
0 VDC
0 VDC
Tab. 2.5 - 1 Voltages of assemblies when the automatic placement system is switched off at the main switch,
but still connected to the main power
User Manual SIPLACE S-25 HM 2 Operational Safety
Software Version SR.503.xx 04/2002 US Edition 2.6 Lock out and tag out procedure
93
2.6 Lock out and tag out procedure
2.6.1 Purpose and scope
Before performing any maintenance work or service work, a procedure of locking and tagging
must be followed. The procedure, when followed correctly eliminates the possibility of an em-
ployee being injured. 2
NOTE 2
These procedures represent the minimum lock/tag out requirements. Any additional safe-guards
needed to complete work safely can be specified by facilities supervision, the safety officer, the
safety committee and the health department.
2.6.2 Description
Whenever it becomes necessary to isolate, control and release energy, the following procedure is
to be followed 2
1. Notify affected employees.
2. Shut down equipment, using normal stopping procedures, such as
– depressing the stop button
– shutting down the station computer or
– switching off the placement system at the main switch.
3. Isolate the equipment from all its energy sources such as
– compressed air supply and
– power supply.
4. Lock Out equipment
– Apply the lock and the lockout whenever possible.
– The Tag Out alternative:
If a machine can be locked out, it must be. However, there are situations where energy iso-
lating devices can not accommodate locks. In these cases, the energy isolating devices
must be tagged to warn employees that the machine is de-energized for servicing. The tag
must be securely fastened, it must be placed in a position visible to all and it may only be
removed by the person who attached it. 2
5. Relieve stored energy