Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany

Telephone +49 711 3409-0, Telefax +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de

Emergency Stop Relays, Safety Gate Monitors

Category 4, EN 954-1

PNOZ X2.8P

● Increase in safety contacts

The number of output contacts can

be increased by using expander

modules or relays/contactors with

positive-guided contacts.

External wiring

● Example 1

Single-channel EMERGENCY STOP

wiring with automatic start

● Example 3

Dual-channel EMERGENCY STOP

wiring without shorts across contacts

detection without monitored start

● Example 5

Dual-channel safety gate control with

shorts across contacts

detection,without monitored start

Schematic interior diagram

● Example 7

Dual channel light barrier control with

shorts across contacts detection by

BWS, without monitored start

● Example 4

Single-channel safety gate control

without monitored start

● Example 6

Dual-channel safety gate control

without shorts across contacts

detection, without monitored start

NSG-D-2-332-10/03

S11

S12

S22 S34

S52

S12

S21

S11

S3

BWS

24 V DC

13

14

K5

S12

S34

K5

K6

K5

K6

K6

S3

– Legend

S1/S2: EMERGENCY STOP or safety

gate switch

S3:

Start switch

actuated element

gate not closed

gate closed

A1 (L+) A2 (L-)

S22

S12

S21

S11

S34

13

14

K1

K2

23

24

S52

33

34

41

42

UB

+

~

CH1

Start

Unit

CH2

Input Ciruit

Reset

circuit

Safety

contacts

Auxiliary

contact

Input Ciruit

Input Ciruit

● Example 2

Single-channel EMERGENCY STOP

wiring without monitored start

S11 S12

S12

S34

S52

S21

S22

S1

S12 or S52

S11 S12

S12

S34

S52

S21

S22

S1

S3

S12 or S52

S11

S12

S22 S34

S52

S12

S21

S11

S1

S3

S52 S34

S12

S11

S22

S12

S21

S1

S3

S12 or S52

S52 S34

S12

S11

S11

S22

S12

S21

S1

S2

S3

S11

S52

S12

S11

S22

S21

S34

S12

S3