SiplaceX4_en - 第171页
1 - 25 S tudent Guide SIPLACE X Edition 09/2005 4 Servic es to the machine 25 4.2.9 The Safety Combination (K6 Rela y) Legend 1. power for transport 34 VDC from T2 2. power 24 VDC input from power su pply DC/DC converter…
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Student Guide SIPLACE X
4 Services to the machine Edition 09/2005
24
4.2.8.3 How does the emergency stop loop work?
The placement system cannot be used in placement mode until all the supply voltages have been
enabled by the protective circuit. The following conditions must also be fulfilled:
4
– All four component change-over tables must be docked.
– All covers must be closed.
– Both emergency stop push-buttons must be released.
– The minimum air pressure must be present.
– The software enable signal must be ready.
– The Message ’
Security Loop OK’ must be sent (for GND on X6 on SSK, CAN I/O output)
– 24 V must be present at the start button.
After the start button is pressed, the SSK combinaton activates the following voltages
: _ 4
– secundary circuit 250 V for servo X/Y axis (via K2, K3, K4).
– secundary circuit 150 V for star axis.
– servo unit receives ’Servo Enable’ signal for servo amplifier (K4.5)
– The message
’Ctrl_On’ must be sent to CAN I/O (24V from axis unit after receiving the
’servo enable)
– 34 V operating voltage for the transport handling.
– 24 V operating voltage for the tape cutter.
– M_X/Y: +24 V for K3 and K4
– M_tape cutter: +24 V for K2
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Student Guide SIPLACE X
Edition 09/2005 4 Services to the machine
25
4.2.9 The Safety Combination (K6 Relay)
Legend
1. power for transport 34 VDC from T2
2. power 24 VDC input from power supply DC/DC converter.
3. input from emergency stop loop (24 VDC)
4. message ready to SLIO (SSK is fine).
5. software release (24 VDC when start button pressed and SW release signal is given).
6. GND for SSK (X6), from Message ’security loop OK’
7. start button pressed (24 VDC form start button).
8. M_X/Y: 24 VDC from SSK (power for K3 and K4).
9. power for transport 34 VDC from SSK
10. M_tape cutter: 24 VDC for contactor K2 and power for tape cutter (24 VDC)
About SSK K6 4
Contactor K6 is an industry standard safety combination contactor. Internally it consists of 3 relays
which are configured in a complex fashion to give maximum protection in a fail safe mode. Unfor-
tunately, for ease of understanding, these internal relays are labeled K1', K2' & K3'. The status of
the contactor is indicated by LEDs labeled as H1, H2 and H3.
When the contactor is in an energized state internal relays K2' and K3' are energized, relay K1' is
de-energized. This status closes the contacts 13 and 14, 23 and 24, 33 and 34.
IWhen this status is achieved K6 can be said to be ‚ON' and the 3 LEDs H1, H2 and H3 are all lit.
L+ X1 X 3 X5 X7 X9 X11
L- X2 X4 X 6 X8 X10
1
2
3
4
5
6
7
8
9
10
auxillary contact
K1.4 K2.4 K3.4 K4.4
K5
SSK K6
power / channel 1 / channel 2
H1 ⊗ H2 ⊗ H3 ⊗
SSK 43
SSK 53
SSK 54
SSK 44
K5K5
K5
K6
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Student Guide SIPLACE X
4 Services to the machine Edition 09/2005
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How is SSK K6 energized? 4
If the safety covers are closed, the emergency stop circuit intact and K5 closed, 24 V is supplied
to terminal X1, X3 and X4, when GND is given on contact 6 (X6) from Message ’security loop OK’
and when a start button is pressed. This voltage allows K1' to be energized and when it's contacts
close then K2' and K3' can energize. As soon as these relays energize, K1' is de-nergized how-
ever K2' and K3' now remain energized due to their contacts providing a self latching facility.
Pressing the ON Button 4
Assuming the ON button is pressed: 24 V is activated and will split into 2 paths.
– 1st path: 24V is activated at the CAN I/O module 1. The signal from this module activates
the CAN bus to notify the Machine Controller that the ON button is pressed; this should dis-
able the Press Start Key message.
– 2nd path: 24V is activated at the power supply main distributor X16_2, from here, this
signal (On Button) is activated at K1.4 (closed when main switch On), K2.4 (NC), K3.4 (NC),
K4.4 (NC), K5 (NO) and at last at pin 6 of SSK.
The 24 V is activated when the following conditions are met:
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When the machine controller gets the signal (1st path) ’START BUTTON pressed’, it will
through the CAN I/O module set an output and proceed to A1 of contactor K5 to energize
K5 (C_Software_On)
4
So when K5 is energized, the signal from 2nd path will flow to X4 of the SSK. 4
4.2.9.1 How does the SSK latch?
Condition: When K5 is energized, the following will happen: 4
– L+ will get 24 V and will light up the first LED
– Since L+ and X1 are internally connected, this 24 V signal will be fed back from X1 to the
CAN I/O module as a SSK READY signal to the MC.
– The X4 on SSK will have 24 V temporary (only when ON is pressed), but it is enough to
energize K1' internal of the SSK. When K1’ is energized, K2' and K3' will also be energized
internally of SSK - only if X3 and X5 of SSK has 24 V with them.
How does X3 and X5 of SSK get the 24V?
– If all covers closed, feeder table locked on, E_Stop released - a 24 V will pass as the emer-
gency loop signal to K5 pin 3 and 4. It proceeds then to X3 and X 5 of SSK.
How does X14 and X34 get hte 24 V?
– When K2' and K3' are latched inside the SSK, pin 34 of SSK will have 24 V.
Main task of them is to power the tape cutter and to energize K2.
4
– When K2’ and K3’ are latched inside the SSK, pin 14 of SSK will have 24 V.
Main task of it is to energize K3 and K4 (with a slight delay).