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Burkert Type 8690 User Manual

Page 23

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23

Electricalinstallation

9.2.2 connection diagram

with three-wire proximity switches
(inductive limit switches)

terminal configuration

external circuit

1

INI - (GND)
Supply

2

1

3

4

Output 1 (24 V)

GND

Output 2 (24 V)

+24 V DC

2

INI 1 OUT
Output

3

INI 2 OUT
Output

4

INI + (24 V DC)
Supply

5

Valve control
0 / 24 V DC

5

6

0/24 V DC ±10 %
Residual ripple 10 %

6

Valve control
GND

Tab. 3: Connection diagram with three-wire proximity switches

9.2.3 connection diagram

with two-wire proximity switches
(inductive namur limit switches)

terminal configuration external circuit

1

INI Top +

NAMUR-
Sensor

Explosion

protected area

Non-hazardous
area

+8,2 V DC

0 V

R

1 / 3

2 / 4

3)

2

INI Top -

3

INI Bottom +

4

INI Bottom -

5

Valve control
+

5

6

4)

6

Valve control
GND

Tab. 4: Connection diagram with two-wire proximity switches

3)

(recommended by NAMUR) Also observe the type-examination certificate
from Turck KEMA 02 ATEX 1090X

4)

Signal from barrier see PTB 07 ATEX 2048

english

Type 8690