Bürkert Pneumatic Control Unit for Decentralised Automation of Process Valves ELEMENT Type 8697

The Type 8697 pneumatic control unit is designed for decentralised automation of ELEMENT Type 21xx pneumatic process valves. Mechanical or inductive limit switches record the valve position. The integrated pilot valve controls single-acting actuators. The design of the control unit and the actuator permits an integrated pilot air duct without external piping. As well as the electrical position feedback, the device status is displayed by LEDs on the pneumatic control unit itself. The housing is easy to clean and features proven IP protection and chemically resistant materials for use in hygienic processing in the food, beverage and pharmaceutical industries. Combined with Bürkert ELEMENT actuators, the pneumatic actuating system enables spring chamber aeration that avoids actuator chamber contamination from the environment.

Body

PPS

Seal

EPDM

Valve spindle, initiator

2…36 mm

Valve spindle, micro switch

4…36 mm

Micro switch

2x micro switch (0…48 V AC/DC, max. 2 A)

Initiator

2x inductive proximity switch (24 V DC), PNP shutter (3-wire) with LEDs

Pilot valve

24 V DC ± 10 %, residual ripple 10 % DC, power consumption 1 W

Residual ripple

10 %

Power consumption

≤ 1 W

Protection class

III according to DIN EN 61140

Multipole variant

M12, 8-pin

Cable gland variant

M16 x 1.5 (cable Ø 4…8 mm) with screw-type terminals for cable cross-sections 0.14…1.5 mm²

Control medium

Neutral gases, air, quality class according to ISO 8573 - 1

Dust content

Class 7 (< 40 µm particle size)

Particle density

Class 5 (< 10 mg/m3)

HS Code

8481.80

• Burkert 8697
• Buerkert 8697
• Bürkert 8697
• Type 8697
• Burkert Type 8697