Service Manual HS60.pdf - 第64页

2 O per ati onal sa fety S er vice Ma nual H S- 60 2.8 Lock out and tag out p rocedu re 03/ 200 3 U S Iss ue 62 2.8 Lock out and t ag out proce dure 2.8 .1 Pur pose a nd sc ope Before p erforming any maintenance work or …

Service Manual HS-60 2 Operational safety

03/2003 US Issue 2.7 Energy state of the machine after switching off at the main power switch

2.7.2 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

2.7.3 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. 2.7 - 1) or if the power

supply fails, the electrically-controlled main valve Y1 of the compressed air unit closes (item 3 in

Fig. 2.7 - 1

, page ). The pressure will drop to 0 MPa (0 bar) within 5 seconds. 2

S1 main power switch

Terminals 1, 3, 5

3 x 204 VAC

3 x 230 VAC

3 x 380 VAC

3 x 400 VAC

3 x 415 VAC

Servo unit (see item 5 in Fig. 2.7 - 2

)

Test socket X2

Test socket X3

Test socket X4

GND X1

< 10 VDC

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

Fig. 2.7 - 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 + 52 VDC (x5te)

Test socket + 5 VDC (x4te)

GND (x3td)

0 VDC

2 Operational safety Service Manual HS-60

2.8 Lock out and tag out procedure 03/2003 US Issue

2.8 Lock out and tag out procedure

2.8.1 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

PLEASE NOTE These procedures represent the minimum lock/tag out requirements. Any addi-

tional safeguards needed to complete work safely can be specified by facilities supervision, the

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

2.8.2 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 the equipment. Carry out all normal stopping procedures, such as

– depressing the stop button

– shutting down the station computer or

– switching off the placement system at the main switch and

(3) Isolate the equipment from all its energy sources such as

– compressed air supply and

– power supply.

(4) Lock out the equipment.

– Apply a lock and lock out whenever possible, e.g. at the motor contactor.

Service Manual HS-60 2 Operational safety

03/2003 US Issue 2.8 Lock out and tag out procedure

Fig. 2.8 - 1 Locking the motor contactor

– The tag out alternative

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. 2

1. Turn the operating lever (1) counter-clockwise.

2. Use the screwdriver to push the locking lug (2) out of the operating lever (1).

3. Secure the operating lever with a padlock (3).