00192471-03 - 第75页

User Manual SIPLAC E HS-50 2 Oper ational Safety Software Version SR.50x.xx 01/2006 US Edition 2. 2 Saf ety equipment 75 Push-button for r aising and lowerin g the component change-over tables (It em 2 in Fig. 2.2 - 6 ) …

2 Operational Safety User Manual SIPLACE HS-50

2.2 Safety equipment Software Version SR.50x.xx 01/2006 US Edition

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 SIPLACE HS-50 2 Operational Safety

Software Version SR.50x.xx 01/2006 US Edition 2.2 Safety equipment

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 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

2 Operational Safety User Manual SIPLACE HS-50

2.2 Safety equipment Software Version SR.50x.xx 01/2006 US Edition

The two signalling contacts for the emergency stop button are connected in parallel and form the

"Emergency stop button signal" circuit. When an emergency stop button is pressed, a 24 V signal

is sent to the CAN bus and signals that one of the emergency stop buttons has been pressed. 2

The four signalling contacts for the push-button flaps are connected in parallel. They form the

"Flaps signal" circuit. If one or more flaps is raised, a 24 V signal is applied to the CAN bus and

signals that one of the cover flaps is not closed. 2

The four signalling contacts for the component tables are connected in series and form the "Com-

ponent table signal" loop. If a component table is missing, a 0 V signal is sent to the CAN bus. If

all the tables are connected, the signal is approximately 16 V. 2

2.2.4.3 Functional description of the safety circuit

The following conditions must be fulfilled before the placement system can be started or oper-

ated:

– all four component changeover tables must be docked and connected.

– all covers - four over the gantries, one over the PCB input belt and one over the output belt -

must be closed.

– both emergency stop buttons must be released

– all four flaps over the push-buttons for raising and lowering the component changeover tables

must be closed.

– the minimum operating pressure must have been reached.

– the software enable must have been given, thus activating the safety circuit.

– the power supply must be sending 24 V to the Start buttons and the protective contactor com-

bination.

– If one of the Start buttons is now pressed, the protective contactor combination (PCC) will

switch and activate the following components:

– 200 V link voltage for the servo amplifier for the gantry axes

– 100 V link voltage for the star axes

– 230 V operating voltage for the lifting table motors

– the servo unit will receive a "Servo enable" signal for the servo amplifier

– 34 V operating voltage is switched to the component changeover tables

– 24 V operating voltage is switched to the used tape cutters.

The machine is now ready for service. 2