Service Manual HS60.pdf - 第49页

Se rv ice M a nu al HS-6 0 2 Ope rati on al saf et y 03/ 200 3 U S Iss ue 2.4 Safe ty eq uipme nt 47 Prot ect iv e co ver sw itch (ite m 2 in Fi g. 2.4 - 5 ) and ot her cover swit ches (ite m 3 i n Fig. 2.4 - 5 ) 2 These…

2 Operational safety Service Manual HS-60

2.4 Safety equipment 03/2003 US Issue

Component counter (item 4 in Fig. 2.4 - 4) 2

This displays the number of inserted components. 2

Service socket (item 5 in Fig. 2.4 - 4) 2

The service socket is contained in the power supply unit and is protected by the safety door. It can

only be used if the placement system is connected to the main power supply via a 5-wire connec-

tion (L1, L2, L3, N, and PE). If a 4-wire connection is used, e.g. without N, the socket cannot be

used. 2

Always follow the safety instructions concerning potentially lethal voltages - even when the place-

ment system is switched off. 2

EMERGENCY-STOP mushroom-head push-button, latching, with override protection to EN

418 (item 1 in Fig. 2.4 - 5) 2

The EMERGENCY-STOP mushroom-head push-button is a red mushroom shaped button. It

latches in the ON position when pressed. When you press the EMERGENCY-STOP mushroom-

head push-button the switching contact of the safety circuit opens and the protective contactor

combination (PCC) trips. The link voltage (200 V) for the gantry axes is switched off, whereas the

link voltage (100 V) for the star axis is reduced to 6 VDC. The servo amplifiers for the DP and Z-

axes are still supplied with 30 VDC. The signaling contact of the EMERGENCY-STOP mushroom-

head push-button closes and the message "EMERGENCY STOP pressed" appears on the

screen. The following modules 2

– PCB conveyor

– PCB clamping

– width adjustment

– laser light barrier and

– used tape cutter

are deactivated. 2

PLEASE NOTE Placement is interrupted and can then either be continued or canceled once the

machine is working correctly again. 2

Service Manual HS-60 2 Operational safety

03/2003 US Issue 2.4 Safety equipment

Protective cover switch (item 2 in Fig. 2.4 - 5) and other cover switches

(item 3 in Fig. 2.4 - 5) 2

These switches check whether the protective and other covers are closed. When the covers are

closed, the safety contact is closed and the signalling contact is open. If one of the covers is

opened, the safety circuit opens and the signalling circuit closes. The individual components will

be activated or deactivated, depending on the position of the key-operated switch (item 5). 2

Protective contactor combination 3TK2805 (item 4 in Fig. 2.4 - 5) 2

The protective contactor combination is contained in the power supply unit. It is not activated or

deactivated if safety-related functions fail. 2

Key-operated switch in position "0" (item 5 in Fig. 2.4 - 5) 2

PLEASE NOTE The key switch remains open for normal mode, i.e. in the 0 position. The key is

pulled out. 2

The protective contactor combination (PCC) trips when one of the protective or other covers is

opened. The link voltage (200 V) for the gantry axes is switched off, whereas the link voltage

(100 V) for the star axis is reduced to 6 VDC. All modules are deactivated. 2

Key-operated switch in position "I" 2

WARNING The protective covers must only be opened, with the key switch

closed (position I), by appropriately qualified and trained personnel. 2

The protective contactor combination (PCC) trips when one of the protective or other covers is

opened. The link voltage of the gantries is switched off and the link voltage for the star axis is re-

duced to 6 VDC. The star of placement head can be paced at a lower speed when the cover is

open. The following modules 2

– PCB clamping

– laser light barrier

– lifting table motors and

– used tape cutters

are deactivated. 2

2 Operational safety Service Manual HS-60

2.4 Safety equipment 03/2003 US Issue

Sockets for connecting the CO trolleys (item 1 in Fig. 2.4 - 6) 2

These sockets are used to supply the necessary voltages and compressed air to the CO trolleys.

The terminals for the safety and signalling circuits are also integrated into these sockets. This pre-

vents the placement system being started up before the component trolleys. If the component ta-

ble is not connected, the protective contactor combination trips and deactivates all the modules.2

Push-button for raising and lowering the CO trolleys (item 2 in Fig. 2.4 - 6) 2

Use the push-buttons to raise and lower the component trolley table bed. To use this push-button,

and thus the drives for the component table you must first move the placement head out of the

range of the component feeder table and open the flap over the button. After changing the com-

ponent table, you must first close the flap over the button once again. 2

– If the flap is closed, the safety circuit contact will close and the signalling contact will open. The

machine is then ready for use.

– If the flap is open, the safety circuit is interrupted and the signalling contact closes. An error

message will appear on the screen prompting you to close the flap. The machine can then be

restarted using the Start button.

Uninterruptible power supply (UPS), station computer (item 3 in Fig. 2.4 - 6) 2

Both the UPS and the station computer are contained beneath the input conveyor. 2

WARNING Always follow the safety instructions concerning potentially lethal volt-

ages - even when the placement system is switched off. 2

2.4.4 Safety circuit and signalling circuit

2.4.4.1 Structure of the safety circuit

The following contacts are connected in series and form the safety circuit loop: 2

– make contacts for the four protective cover switches

– make contacts for the two PCB conveyor covers

– make contacts for the two EMERGENCY-STOP mushroom-head push-buttons

– make contacts for the four CO trolleys

– make contacts for the four flaps over the push-buttons for raising and lowering the CO trolleys

– channels 2 and 3 of the protective contactor combination PCC