Burkert 8690 Manuel D'utilisation page 26

procedure:
→
Open the Pneumatic Control Unit: unscrewing the transparent
cap in an anticlockwise direction.
→
Install the cable gland, if necessary. Installation instructions see
"1. Appendix - Anhang"
→
Push the cables through the cable gland.
→
Connect the wires.
→
Close the Pneumatic Control Unit.
Fig. 18: Position of the screw terminals
Correct polarity is a prerequisite for the functioning of the
device!
→
Connect only intrinsically safe circuits to terminals 1 – 6.
26
Printed circuit 1
board
2
Screw
3
terminals
4
5
6
english
Type 8690 Ex
Electrical installation
Connection diagram
with two-wire proximity switches (inductive NAMUR limit switches)
terminal configuration external circuit
1 INI Top +
protected area
2 INI Top -
3 INI Bottom +
4 INI Bottom -
Valve control
5
+
protected area
Valve control
6
GND
Tab. 7: Connection diagram with two-wire proximity switches
(recommended by NAMUR) Also observe the type-examination
3)
certificate from Turck KEMA 02 ATEX 1090X
Maximum value from barrier see PTB 07 ATEX 2048
4)
Explosion Non-hazardous
area
1 / 3
+8,2 V DC
2 / 4
NAMUR-
Sensor
R
0 V
Explosion Non-hazardous
area
Safety barrier
+
5
6
PA
3)
4)