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1 - 26 S tudent Guide SIPLACE X 4 Services to the machine Edition 09/2005 26 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, X…

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Student Guide SIPLACE X

Edition 09/2005 4 Services to the machine

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

auxillary contact

K1.4 K2.4 K3.4 K4.4

SSK K6

power / channel 1 / channel 2

H1 ⊗ H2 ⊗ H3 ⊗

SSK 43

SSK 53

SSK 54

SSK 44

K5K5

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Student Guide SIPLACE X

4 Services to the machine Edition 09/2005

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:

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)

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.

– 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).

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Student Guide SIPLACE X

Edition 09/2005 4 Services to the machine

4.2.10 Various Signal

4.2.10.1 Software Release (Software Enabled)

The software release signal is given by the CAN I/O card when the machine controller software is

fully booted. This means that not only must the machine controller software be booted but com-

munication must be established to the vision system, axis cards, CAN BUS, station computer and

line computer (unless it is operating in stand-alone mode).

The software release signal is only present on K5, contact A1 when the CAN I/O gives the signal

in combination when the start button is pressed.

If the emergency stop circuit is broken then the software release is

not given.

Fig. 4.2 - 18 software release signal

4.2.10.2 Security Loop OK signal

The security loop signal is given by the CAN I/O when following conditions are filled.

Emergency stop loop is closed and in addition, every single safety device send a message to the

CAN I/O module. Inside this module, they are logical matched by using a FPGA and the

CAN I/O set an output 24V ’security messages OK’ which travels to the power supply.

Conditions:

– all covers closed

– all component tables connected

– all emergency stop button released

Fig. 4.2 - 19 signal security loop

This signal runs into the power supply X8-20 and connects GND to SSK, contact X6.

X2qa_5

CAN I/O

24 V

X16_5

contact

A1(+)

power supply

M_software

release

main distributer, section 2

output

CAN I/O

module

X2qa

X16

24 V

X8-20

BTS 117

SSK

GND

M_ covers closed

M_ tables connected

M_stop button released

power supply

Legend:

1: BTS 117 power switch for GND

section 2

output

inrush current limiter board