00197295-01_UM_D4i_SR605_EN - 第69页
User manual SIPLACE D4i 2 Operational safety From software version SR.605.03 SP2 10/2012 EN edition 2.6 Safety equipment 69 2.6.4 EMERGENCY STOP l oop and signaling circuit 2.6.4.1 Structure of the EMERGENCY ST OP loop T…
2 Operational safety User manual SIPLACE D4i
2.6 Safety equipment From software version SR.605.03 SP2 10/2012 EN edition
68
Protective contactor combination 3TK2825 (item 1 in Fig. 2.6 - 7) 2
The protective contactor combination is contained in the power supply unit. It is used to monitor
the EMERGENCY STOP circuits and safety equipment.
There are three conditions that must be fulfilled in order to activate the protective contactor com-
bination:
– The "software enable" signal must have been sent.
– The EMERGENCY STOP loop must be closed.
– The start button must have been pressed.
On the front panel of the protective contactor combination, there are three green operating display
LEDs (see Fig. 2.6 - 8
, page 69):
– The "Power" LED indicates that voltage is present.
– The "Channel 1" and "Channel 2" LEDs light up if the start button was pressed, the EMER-
GENCY STOP loop is closed and the signaling circuit is not signaling a fault status.
Service socket (item 4 in Fig. 2.6 - 7) 2
The service socket is contained in the power supply unit and is protected by the cover. It can only
be used if the machine is connected to the main power supply via a 5-wire connection (U, V, W,
N, and PE). If a 4-wire connection is used, e.g. without N, the socket cannot be used.
WARNING 2
Always follow the safety instructions concerning potentially lethal voltages - even when the
machine is switched off (see Section 2.6.2.4 from page 64).
User manual SIPLACE D4i 2 Operational safety
From software version SR.605.03 SP2 10/2012 EN edition 2.6 Safety equipment
69
2.6.4 EMERGENCY STOP loop and signaling circuit
2.6.4.1 Structure of the EMERGENCY STOP loop
The following contacts are connected in series and form the EMERGENCY STOP loop:
– normally open (NO) contacts for the four protective cover switches
– normally open (NO) contacts in the two protective switches for the cover flaps over the PCB
conveyor
– normally open (NO) contacts for the two EMERGENCY STOP buttons
– normally open (NO) contacts for the four component trolleys
– normally open (NO) contacts for the four flaps over the pushbuttons for raising the CO tables
– channels 2 and 3 of the protective contactor combination K1
If the EMERGENCY STOP 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
Fig. 2.6 - 8 Signal LED on the protective contactor combination
(1) Power
(2) Channel 1
(3) Channel 2
2 Operational safety User manual SIPLACE D4i
2.6 Safety equipment From software version SR.605.03 SP2 10/2012 EN edition
70
2.6.4.2 Structure of the signaling circuit
The six signaling contacts for the covers are connected in parallel and form the "cover signal" cir-
cuit. If one or more covers are opened, the contacts close, and the 24 V signal reaches the CAN
bus and signals that one of the covers is open.
The two signaling contacts for the EMERGENCY STOP buttons 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.
The four signaling contacts for the push-button flaps are connected in parallel. They form the "Flap
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.
The four signaling contacts for the CO trolleys are connected in series and form the "M-COTable"
signal loop. If a CO trolley is missing, a 0 V signal is sent to the CAN bus. If all trolleys are con-
nected, the signal is approximately 16 V.
2.6.4.3 Description of the functions of the EMERGENCY STOP loop
The following conditions must be fulfilled before the machine can be started or operated:
– All four component trolleys must be docked in and connected.
– All protective covers must be closed.
– Both cover flaps over the PCB conveyor must be closed.
– Both EMERGENCY STOP buttons must be released.
– All four flaps over the pushbuttons for raising the CO table must be closed.
– The minimum operating pressure must have been reached.
– The "software enable" signal must be active. This ensures that the EMERGENCY STOP loop
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 will
switch and activate the following components:
– 200 V link voltage for the servo amplifiers for the gantry axes
– 150 V link voltage for the star axes
– The axis unit will receive a "Servo Enable" signal for the servo amplifier.
– 34 V operating voltage is switched to the CO trolleys.
– 24 V 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.