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2 Operational Safety User Manual HS -50 2.2 Safety equipment Software Version SR.501.xx 12/99 Issue U S 72 t I I t Protective cover switches (Item2 in Fig. 2.2 - 5) and other cover switc hes (Item3 in Fig. 2.2 - 5) 2 The…

User Manual HS-50 2 Operational Safety

Software Version SR.501.xx 12/99 Issue US 2.2 Safety equipment

t IIt

Start button, white (item 3 in Fig. 2.2 - 4) 2

After switching on at the main switch, you will be prompted to press the Start button in order to

start the placement system for placement jobs. The same prompt appears if you open the protec-

tive covers or press the emergency stop mushroom-head push- button. 2

Component counter (Item 4 in Fig. 2.2 - 4) 2

This displays the number of inserted components. 2

Service socket (Item 5 in Fig. 2.2 - 4) 2

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

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

nection (L1, L2, L3, MP 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. 2.2 - 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-but-

ton, 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 axes is reduced to 6 VDC. The servo amplifiers for the dp and z axes are still

supplied with 30 VDC. The signalling contact of the emergency stop mushroom-head push-but-

tons closes and the message "Emergency stop pressed" appears on screen. The following mod-

ules: 2

– PCB conveyor

– PCB clamping

– width adjustment

– PCB stopper and

– used tape cutter

are deactivated. 2

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

machine is restored to working order. 2

2 Operational Safety User Manual HS-50

2.2 Safety equipment Software Version SR.501.xx 12/99 Issue US

t IIt

Protective cover switches (Item2 in Fig. 2.2 - 5) and other cover switches (Item3 in Fig. 2.2 - 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

either be activated or deactivated, depending on the position of the key switch (Item 5). 2

Protective contactor combination 3TK2805 (Item 4 in Fig. 2.2 - 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 switch in position "0" (Item 5 in Fig. 2.2 - 5) 2

PLEASE NOTE The key switch remains open, i.e. in position "0" for normal mode. 2

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

opened. The link voltage (200 V) to the gantry axes is switched off and the link voltage for the star

axes (100 V) is reduced to 6 VDC. All modules are deactivated. 2

Key switch in position "I" 2

WARNING 2

The protective covers must only be opened by appropriately qualified and trained personnel

when the key switch is closed (position "I").

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

opened. The link voltage to the gantries is switched off and the link voltage for the star axes is

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

is open. The following modules: 2

– PCB stopper

– lifting table motors and PCB clamping

– used tape cutters

are deactivated. 2

Sockets for the component change-over tables (Item 1 in Fig. 2.2 - 6) 2

These sockets are used to supply the necessary voltages and compressed air to the component

changeover tables. The terminals for the safety and signalling circuits are also integrated into

these sockets. This prevents the placement system being started up before the component tables

are docked. If the component table is not connected, the protective contactor combination trips

and deactivates all the modules. 2

User Manual HS-50 2 Operational Safety

Software Version SR.501.xx 12/99 Issue US 2.2 Safety equipment

t IIt

Push-button for raising and lowering the component change-over tables (Item 2 in Fig. 2.2 - 6)2

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 table and open the flap over the button. After

changing the component table, you must close the flap over the button once more. 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 screen, prompting you to close the flap. The machine can then be re-

started using the Start buttons.

Uninterruptible power supply (UPS), station computer (Item 3 in Fig. 2.2 - 6) 2

Both the UPS and the station computer are housed 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

2.2.4 Safety circuit and signalling circuit

2.2.4.1 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 component tables

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

tables

– channels 2 and 3 of the protective contactor combination (PCC)

If the safety loop is closed, 24 VDC is present at channels 2 and 3 of the PCC. The two green

LEDs for channels 2 and 3 light up in addition to the green power ON LED. 2

2.2.4.2 Structure of the signalling circuit

The six signalling contacts for the covers are connected in parallel and form the "Cover signal"

circuit. If one or more covers are opened, the contacts close - the 24 V signal reaches the CAN

bus and signals that one of the covers is open. 2