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User Manual HS-50 2 Operational Safety Software Version S R.501.xx 12/99 Issue US 2.5 Energy s tate of the placement system after switching off at the main switch 85 t I I t 2 2.5.2 Mai n switch switched off - machine di…

2 Operational Safety User Manual HS-50

2.5 Energy state of the placement system after switching off at the main switch Software Version SR.501.xx 12/99 Issue US

t IIt

2.5.1 Main switch switched off - machine system connected to the

main power supply

The following table shows the voltages of the individual modules when the main switch is switched

off, but the placement system is still connected to the main power supply. 2

DANGER 2

The following components still carry potentially lethal voltages even if the main switch is switched

off: 2

– cable connection terminals 1, 3, and 5 of S1 main switch

– Z1 main power filter

– BU1 service socket

– F1 automatic circuit breaker for the service socket

– The color of all individual wires, which still carry potentially lethal voltages even if the main

switch is switched off is brown.

Module Voltage

Z1 main power filter

Cable connection terminals L1, L2, L3

[9$&

[9$&

[9$&

[9$&

[9$&



BU1 service socket

9$&

9$&

9$&

9$&

9$&



F1 automatic circuit breaker

9$&

9$&

9$&

9$&

9$&



User Manual HS-50 2 Operational Safety

Software Version SR.501.xx 12/99 Issue US 2.5 Energy state of the placement system after switching off at the main switch

t IIt

2.5.2 Main switch switched off - machine disconnected from the power supply

The placement system is de-energized, 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 placement system is switched off at the main switch (item 1 in Figure 2.5 - 1) or the

power supply to the placement system fails, the electrically-controlled main valve Y1 shuts off the

compressed air unit (item 3 in Figure 2.5 - 1

). The pressure drops to 0 bar within 5 seconds. 2

S1 main switch

Cable connection terminals 1, 3, 5

[9$&

[9$&

[9$&

[9$&

[9$&



Servo unit (see item 5 in Figure 2.5 - 2

)

Test socket X2

Test socket X3

Test socket X4

GND X1

< 10 VDC

Control unit (see items 3, 4, 5 and 6

in Figure 2.5 - 2

)

Test socket + 12 VDC (x3ta)

Test socket - 12 VDC (x4ta)

Test socket + 15 VDC (x3tb)

Test socket - 15 VDC (x4tb)

Test socket + 5 VDC (x3td)

Test socket + 24 VDC (x4td)

Test socket + 50 VDC (x5te)

Test socket + 5 VDC (x4te)

GND (x3td)

0 VDC

2 Operational Safety User Manual HS-50

2.6 Lock out and tag out procedure Software Version SR.501.xx 12/99 Issue US

t IIt

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.