00196044-05 - sg x und x4i fse_en - 第191页
Energy and Compressed Air Supply Protective Contactor Combination K6 (SSK) Power supply S tudent Guide (FSE) SIPL ACE X Series and X4I Edition 01/2009 EN Energy and Compressed Air Supply 191 5.2.9 Protective Contactor Co…
Energy and Compressed Air Supply
Power supply Safety and Signaling Circuit
Student Guide (FSE) SIPLACE X Series and X4I
Energy and Compressed Air Supply Edition 01/2009 EN
190
5.2.8.3 How Does the Emergency STOP Circuit Function?
The placement system cannot be used in placement mode until all the supply voltages have been
enabled by the protective contactor combination.
The following conditions must also be fulfilled:
All four component changeover tables must be docked.
All covers must be closed.
Both emergency stop buttons must be released.
The minimum air pressure must be present.
The software enable signal must be ready.
The message
Safety 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 pressing the start button, the protective contactor combination releases the following voltages:
Secondary circuit 250 V for servo X/Y axis (via K2, K3, K4).
Secondary circuit 150 V for star axis.
The servo unit receives
the servo release signal
for the servo amplifier (K4.5)
The message
Ctrl_On
must be issued at CAN I/O (24 V from the axis unit after receiving
the servo
release signal
)
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
Energy and Compressed Air Supply
Protective Contactor Combination K6 (SSK) Power supply
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Energy and Compressed Air Supply
191
5.2.9 Protective Contactor Combination K6 (SSK)
Legend:
1. Power for transport 34 VDC from T2
2. Power 24 VDC input from power supply DC/DC converter.
3. 24 VDC input from emergency STOP circuit
4. Message
READY
to CAN I/O module (SSK is OK.)
5. Software release (24 VDC when start button pressed and SW release signal is given).
6. GND for SSK (X6), from message
Safety 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)
5.2.9.1 About SSK K6
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. Unfortunately, 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.
When this status is achieved, K6 is "ON" and the 3 LEDs H1, H2 and H3 all shine.
Energy and Compressed Air Supply
Power supply Protective Contactor Combination K6 (SSK)
Student Guide (FSE) SIPLACE X Series and X4I
Energy and Compressed Air Supply Edition 01/2009 EN
192
5.2.9.2 How is SSK K6 Energized?
If the covers and the emergency STOP circuit are closed and K5 is deactivated, 24 V will be supplied to
terminals X1, X3 and X4, as soon as the GND is present at contact 6 (X6) - a state triggered by the
message
Safety loop OK
- and the start button has been pressed. This voltage allows K1 to be
energized and when its contacts close, K2 and K3 will energize. As soon as these contacts energize, K1
is de-energized. However K2 and K3 remain energized as their contacts have a self latching facility.
5.2.9.3 Pressing the ON Button
Assuming the ON button is pressed: 24 V is activated and will split into 2 paths.
1. : 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 has been pressed. This deactivates the message
Press Start Key
.
2. : 24V is present at the power supply main distributor X16_2 and, from here, this signal (start
button) is sent to K1.4 (closed when main switch ON), K2.4 (break contact, NC), K3.4 (break contact,
NC), K4.4 (break contact, NC), K5 (make contact, NO), ending at pin 6 of the SSK. The 24 V is
activated when the following conditions are met:
Condition: When the machine controller gets the signal (1st path)
START BUTTON pressed
, it will set
an output via the CAN I/O module and supply A1 of contactor K5 with 24V (C_Software_On)
So when K5 is energized, the signal from 2nd path will flow to X4 of the SSK.
5.2.9.4 How Does the Protective Contactor Combination (SSK) Latch?
Condition: When K5 is energized, the following will happen:
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
.
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 are closed, the changeover tables are docked and the STOP button is not pressed, there
will be 24V present at K5 pin 3 and 4 via the emergency STOP circuit and from there at X3 and X5
of the SSK.
24V voltage on the X14 and X34 of the SSK (protective contactor combination)
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. (switching through of U, V, W of X/Y axes)
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).