Burkert 8697, Operating Instructions Manual

Page: 28 / 33

28
Electrical installation
9.4.2. Display elements LEDs REV.2
Version
with 3-wire
proximity
switches
Version
with 2-wire
proximity
switches
Version with
2-wire prox-
imity switches
by NAMUR (Ex
version) 6)
End
position top
LED Top
is lit yellow is lit yellow green off
End
position
bottom
LED Bottom
is lit green is lit green yellow off
Tab. 8: End position LEDs release version 2
The version with microswitches (mechanical limit switches) does
not include any LEDs for the position indicator.
7)
In the case of the version with 2-
wire
initiators according to NAMUR
the LED function is inverse for technical reasons, i.e. the LED glows
when the end position is not reached and goes out when the end
position is reached.
9.5. Adjustment of the micro switches or
the proximity switches (option)
DANGER!
Risk of electric shock.
▶
Before reaching into the device, switch off the power supply
and secure to prevent reactivation.
▶
Observe applicable accident prevention and safety regulations
for electrical equipment.
Procedure:
→
Open the Pneumatic Control Unit: unscrewing the transparent
cap in an anticlockwise direction.
→
Ensure that the distance between both switch cams is maximum.
(see “7. Installation”).
Switch spindle
Switch cam
3
Spacer sleeve
Maximum
distance
Fig. 26: Distance between the switch cams
→
Pressurize pilot air port 1 with compressed air (5 bar) or, if fitted,
actuate the hand lever of the pilot valve in the control unit:
Actuator moves to the 2nd end position.
english
Type 8697