CAN Bus Workshop_Version 03__06-2008_EN.pdf - 第22页

1 - 14 S tudent Gu ide CAN BUS Wor kshop 1 Operat iona l safety Editi on 06/2 008 14 1.3.3 Safety circuit and signaling circuit 1.3.3.1 Des cription of t he funct ions of the safety circuit The foll owing con dition s mu…

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Student Guide CAN BUS Workshop

Edition 06/2008 1 Operational safety

1.3.2 Position of the push-buttons for docking the component trolleys in and out

Fig. 1.3 - 3 Position of push-buttons on the component trolley

1. Push-button on the top

2. Push-button in the guard

E1guard, location 1

E2guard, location 2

E3guard, location 3

E4guard, location 4

Two push-buttons are integrated into the guard module (items E1, E2, E3 and E4). These are used

to dock the component trolley in or out at the location. These push-buttons must be pressed si-

multaneously, if you docking the component trolley.

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Student Guide CAN BUS Workshop

1 Operational safety Edition 06/2008

1.3.3 Safety circuit and signaling circuit

1.3.3.1 Description of the functions of the safety circuit

The following conditions must be fulfilled in order to start and operate the placement machine:

– all four component trolleys must be docked in 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 push-buttons must be released.

– the cover flaps (option) over the feeders must be closed.

– the minimum operating pressure must have been reached.

– the "software enable" signal must be active. This ensures that the safety circuit is closed.

– 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 K6 will

switch and activate the following components:

– 250 VDC link voltage for the servo amplifiers for the gantry axes

– 145 VDC link voltage for the star axes

– the axis unit receives a "Servo Enable" signal for the servo amplifier

– 34 VDC operating voltage is switched to the component trolleys.

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

– the PCB conveyor control receives the enable signal for the PCB clamping, the PCB stop-

per and the lifting table control.

The machine is then ready for use.

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Student Guide CAN BUS Workshop

Edition 06/2008 1 Operational safety

Fig. 1.3 - 4 Safety circuits

Start button pressed

Compressed air

min. 0.5 MPa

(5.0 bar)?

Emerg. stop

push-button pressed?

Protective cover open ?

Safety mode

activated on the user

interface?

Component

trolley safety circuit

interrupted?

Yes

Active

PCC*) Yes

Voltage

Y axis 250 V-

X axis 250 V-

star axis 145 V-

DP axis/D-Twin 40 V-

Z axis/Z-Twin 40 V-

Active

PCB conveyor Yes

Lifting table Yes

PCB clamping Yes

Width adjustment Yes

Laser light barrier Yes

Tape cutter Yes

CO trolley dock. unit Yes

Yes

Active

PCC*) No

Voltage

Y axis 0 V

X axis 0 V

star axis 0 V-

DP axis/D-Twin 40 V-

Z axis/Z-Twin 40 V-

Active

PCB conveyor Yes

Lifting table No

PCB clamping No

Width adjustment Yes

Laser light barrier No

Tape cutter No

CO trolley dock. unit Yes

Active

PCC*) No

Voltage

Y axis 0 V

X axis 0 V

star axis 0 V-

DP axis/D-Twin 40 V-

Z axis/Z-Twin 40 V-

Active

PCB conveyor No

Lifting table No

PCB clamping No

Width adjustment No

Laser light barrier No

Tape cutter No

CO trolley dock. unit No

*) PCC protective contactor combination K6

Yes

Start button pressed