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2 Operational Safety User Manual S-23 HM 2.3 Residual voltages i n the servo unit and discharge times Software Version SR.405.xx 05/99 I ssue 74 2.3.1 Operati ng volt ages, residual v olta ges and discha rge times af ter…

User Manual S-23 HM 2 Operational Safety

Software Version SR.405.xx 05/99 Issue 2.3 Residual voltages in the servo unit and discharge times

2.3 Residual voltages in the servo unit and discharge

times

When the emergency stop mushroom-head push-button is pressed or the placement system is

switched off, the electrolytic capacitors quickly discharge to safe residual voltage levels via

switched resistors on the discharge board (00308443-xx).

The voltages can be tapped off at test sockets 001 - 009 on the voltmeter unit in the servo unit.2

DANGER Automatic placement systems from the SIPLACE family are

powered with 3 x 400 VAC (3 x 208 VAC for the U.S.A. version) ± 10 %, 50/60 Hz main power volt-

age. This means that parts of the system carry potentially fatal voltages - even when switched off

at the main switch.

Death, serious injury or considerable damage may result if these placement systems are handled

incorrectly. Always follow the applicable accident prevention and DIN regulations (particularly

EN 60204, part 1).

The guard over the servo unit must ONLY be opened by appropriately qualified and trained per-

sonnel. 2

Fig. 2.3 - 1 Test sockets on the voltmeter unit in the servo unit

un-

switched

Servo

unit

2 Operational Safety User Manual S-23 HM

2.3 Residual voltages in the servo unit and discharge times Software Version SR.405.xx 05/99 Issue

2.3.1 Operating voltages, residual voltages and discharge times after pressing

the emergency stop mushroom-head push-button

2.3.2 Residual voltages and discharge times after switching off at the main switch

CAUTION To avoid losing data, evaluate the following criteria before switching off your

automatic placement system (apart from in emergencies):

– Has the placement system finished transmitting machine, set-up and working data?

– Has the placement system finished processing the PCB?

– Has the placement system completed the run-up phase?

– Has the Windows NT operating system been shut down correctly? 2

Test socket 00X

measured at 007

(GND)

Voltage

in normal mode

Residual voltage

after emerg. stop

Discharge times

of electrolytic

capacitors at 12 VDC

001 70 VDC 10 VDC < 2 sec

002 30 VDC 30 VDC –

003 30 VDC < 12 VDC < 2 sec

004 24 VDC 24 VDC –

005 12 VDC 12 VDC –

006 5 VDC 5 VDC –

008 70 VDC 10 VDC < 2 sec

009 155 VDC 10 VDC < 1 sec

Tab. 2.3 - 1 Operating voltages, residual voltages and discharge times after pressing the emergency stop

mushroom-head push-button

Test socket 00X

measured at 007 (GND)

Residual voltage

when main switch is off

Discharge times of electrolytic

capacitors at 12 VDC

001 < 12 VDC < 2 sec

002 < 12 VDC < 2 sec

003 < 12 VDC < 2 sec

004 0 VDC –

005 0 VDC –

006 0 VDC –

008 < 12 VDC < 2 sec

009 < 12 VDC < 1 sec

Tab. 2.3 - 2 Residual voltages and discharge times after switching off at the main switch

User Manual S-23 HM 2 Operational Safety

Software Version SR.405.xx 05/99 Issue 2.4 Disabling the compr. air supply and discharging the pressure

2.4 Disabling the compr. air supply and discharging

the pressure

The compressed air working pressure is set to 5.1 bar, although it may fluctuate between 5.0 and

5.3 bar. The position of the compressed air unit is indicated by item 5 in Fig. 2.4 - 1. The com-

pressed air supply to the machine can be interrupted using the shut-off valve (item 1 in

Fig. 2.4 - 1). 2

– You must remove the cover plate to use the shut-off valve.

– Turn the lever on the shut-off valve (item 1 in Fig. 2.4 - 1) from the vertical to the horizontal

position.

– Watch the working pressure gauge (item 2 in Fig. 2.4 - 1) and the pressure gauges for the com-

pressed air supply to the component tables and tape cutters or to the stopper (item 3 or 4 in

Fig. 2.4 - 1). When the automatic placement system is switched on, the pressure discharges

to 0 bar within 1 minute.

Fig. 2.4 - 1 Compressed air unit on the automatic placement system

WARNING Never disconnect compressed air lines while they are pressurized.2

(1) Shut-off valve lever in the CLOSED position

(2) Working pressure gauge

(3) Pressure gauge for CO tables and tape cutters working pressure

(4) Pressure gauge for the PCB stopper working pressure

(5) Position of the compressed air unit