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2 Operational safety User Manual SIPLACE S-27 HM 2.8 Energy state of the machine af ter switching off at t he main switch Software version SR.503.xx07/2003 US Edition 64 2.8.1 Placement system switched off at the main po…

User Manual SIPLACE S-27 HM 2 Operational safety

Software version SR.503.xx 07/2003 US Edition 2.8 Energy state of the machine after switching off at the main switch

2.8 Energy state of the machine after switching off at

the main switch

WARNING 2

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 automatic 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. 2.8 - 1 Position of the control unit, servo unit, main switch, service socket and

compressed air unit in the placement system

(1) Main power switch Q1 (2) Compressed air unit

(3) Service socket (4) Servo unit

(5) Control unit (6) Power supply in the 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

GND

+24V

-15V

+15V

-12V

+12V

+5V

Fail

permanent switchable

2 Operational safety User Manual SIPLACE S-27 HM

2.8 Energy state of the machine after switching off at the main switch Software version SR.503.xx07/2003 US Edition

2.8.1 Placement system switched off at the main power 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.

2.8.2 Placement system switched off at the main power switch and disconnected ...

The automatic placement system is unpowered, apart from slight residual voltages in the servo

unit.

2.8.3 Compressed air conditions in the machine after switching off at the main

power switch

When the system is switched off at the main power switch (item 1 in Fig. 2.8 - 1) or if the power

supply fails, the electrically-controlled main valve Y1 of the compressed air unit closes (Fig. 2.7 -

1, page 61 ). The pressure will drop to 0 MPa (0 bar) within 5 seconds.

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 power switch Q1

Terminals L1, L2, L3

Terminals T1, T2, T3

3 x 400 VAC (3 x 208 VAC)

0 VAC

Servo unit (item 7 in Fig. 2.8 - 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

0 VDC

< 12 VDC

Control unit (item 6 in Fig. 2.8 - 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

Tab. 2.8 - 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-27 HM 2 Operational safety

Software version SR.503.xx 07/2003 US Edition 2.9 Lock out and tag out procedure

2.9 Lock out and tag out procedure

2.9.1 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

employee being injured.

NOTE:

These procedures represent the minimum lock/tag out requirements for maintenance and servic-

ing work. Any additional safeguards needed to complete work safely can be specified by facilities

supervision, the safety officer, the safety committee and the health department. 2

2.9.2 Description

Whenever it becomes necessary to isolate, control and release energy, the following procedure

is to be followed

1. Notify affected employees.

2. Shut down the equipment. Carry out all normal stopping procedures, such as

– depressing the stop button

– shutting down the station computer or

– switching off the placement machine at the main switch

3. Isolate the equipment from all its energy sources such as

– compressed air supply and

– power supply.

4. Lock out the equipment.

– Apply the lock and the lockout whenever possible.

– Alternative:Tagging out

If a machine can be locked out, it must be. However, there are situations where energy iso-

lating devices cannot 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.