SB4-OR-4XP-4M

6

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Pepperl+Fuchs Group

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Safety control unit

The evaluation system SB4 is an ESPE of type 4 (EN 61496-1 or IEC 61496-1) or category 4 (EN 954-1). This system is also

designed and tested according to IEC 61508. It meets the requirements for the SIL3.

The operating instructions supplied with the device must be observed for planning, installation and operation.

A maximum of 4 safety light barriers can be connected to the evaluation device.

With the sensor card on position 2, it is possible to connect "3-wire" light barriers of the SLA family (for example SLA5) and light

grids of the SLP type. But also p-switching safety devices with dedicated cross circuit monitoring can be connected, for example

safety light curtains from the SLC family. In addition switch-off mats of the 4-wire principle or integrated safety sensors in the 1 or

2 channel version can be connected.

The cable or the manner it is laid to the light barriers and light grids must be chosen that no short circuit between the receiver and

transmitter wires is possible.

Light curtains with semiconductor switch outputs and integrated safety sensors in 2 channel design are monitored for

simultaneousness. The monitoring time is 2 s.

The connection is done on channels 3 and 4 and/or 1 and 2. Note that these sensors must feature a dedicated cross circuit

monitoring, because the module does not

carry out the cross circuit monitoring for these sensors. Integrated safety sensors, which are connected to the Safebox must work

according to the normally closed principle.

An open contact means "safe status". Switch-off mats of the 4-wire principle can be connected to channels 1 and 2 and/or 3 and 4.

The module on position 3 implements the muting function. Refer to the operating instructions for detailed notes on the functions.

The user must make sure to only connect sensors that can be muted to the sensor card that is assigned to the muting module.

These are, for example, light barriers or light grids.

By default, the restart interlock is activated.

Each assembly contains DIP switches for selecting the functions. For selecting functions, 2 selector switches must always be

actuated.

Switches on the first assembly:

Switches on the second assembly:

The assembly contains 6 DIP switches for selecting the sensor type and the position. Six possibilities are offered for combining

sensors. The desired combination is to be set binary. For function selection, always 2 switches must be actuated, that means DIP

switches 1 - 3 have the same switch position as DIP switches 4 - 6.

Switches on the third assembly:

Function

Operating modes

Switch

Position

Operating mode

1 and 3

OFF

Without restart interlock (restart, RI)

ON

With restart interlock (restart, RI)

2 and 4

OFF

Without relay monitor (RM)

ON

With relay monitor (RM)

DIP switch

Operating mode

3 and

6

2 and

5

1 and

4

0

0

0

SLA /SLP/bridge channel 1 + 2 and channel 3 + 4

0

0

1

SLA /SLP/bridge on channel 1 + 2 and SLC channel 3 + 4

0

1

0

SLC channel 1 + 2 and channel 3 + 4

0

1

1

SLA /SLP/bridge channel 1 + 2 and safety mat channel 3 + 4

1

0

0

Safety mat channel 1 + 2 and channel 3 + 4

1

0

1

SLC channel 1 + 2 and safety mat channel 3 + 4

Switch

Position

Operating mode

1

Group 1 and 2

OFF

Muting lamp monitoring inactive

ON

Muting lamp monitoring active

2

Group 1 and 2

OFF

Single muting

ON

Double muting

3

Group 1 and 2

OFF

Time window-limited muting

ON

Protection beam-limited muting

4

Group 1 and 2

OFF

Sequential muting

ON

Parallel muting