Pneumatic control unit for decentralized automation of process valves ELEMENT
The pneumatic control unit Type 8697 is designed for decentralised automation of process valves ELEMENT Type 21xx. Mechanical or inductive limit switches register the valve position. The integrated pilot valve controls single-acting actuators.
The design of the control unit and the actuator enables internal control air routing without external tubing. Besides the electrical position feedback the status of the device is shown directly on the pneumatic control unit itself via LEDs.
The housing is easy to clean and features proven IP protection and chemically resistant materials for use in hygienic processing, in 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
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BURKERT TYPE 8697 สามารถใช้ได้ร่วมกับ
General Technical Data | Burkert - Type 8697
Product Properties |
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Dimensions
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Detailed information can be found in chapter “3. Dimensions” on page 5.
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Body material |
PPS
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Seals material | EPDM |
Cover material | PC |
Setting valve end positions commissioning |
Automatic (mechanical)
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Manual override pilot valve commissioning | Yes |
Status display for display of device and valve status |
Coloured LEDs
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Status display for optical position indicator (mechanical) |
Yes
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Position Sensor / Position Feedback |
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Micro switch
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2x Micro switch (0…48 V AC/DC, max. 2 A) /2x Micro switch (50…250 V AC/DC, max. 2 A)
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Initiator
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2x Initiator (24 V DC), PNP shutter 3-wire with LEDs / 2x Initiator NAMUR (8.2 V DC) shutter (2-wire) with LEDs / 2x Initiator (24 V DC), shutter (2-wire) with LEDs
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Valve spindle stroke range for linear actuators
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2…36 mm
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Electrical Data |
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Pilot valve operating voltage
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24 V DC ±10%, residual ripple 10% DC; power consumption 1 W |
Micro switch operating voltage |
0…48 V AC/DC, max. 2 A / 230 V version: 50…250 V AC/DC, max. 2 A
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Initiator |
10…30 V DC – max. 100 mA per initiator
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Protection class
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3 acc. to DIN EN 61140
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Residual ripple
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10%
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Power consumption | <1 W |
Multipole electrical connection
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M12, 8 pin
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Cable gland electrical connection |
M16 x 1.5 (cable Ø 4…8 mm) with terminal screws for cable cross-sections / 0.14…1.5 mm2
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Pneumatic Data |
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Dust content control medium
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Neutral gases, air, quality class acc. to ISO 8573-1
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Particle density control medium | Class 7 (<40 μm particle size) |
Pressure dew point control medium | Class 5 (<10 mg/m3) |
Oil content control medium | Class 3 (<- 20 °C or min. 10 °C below the lowest operating temperature) Class X (<25 mg/m3) |
Supply pressure
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3…7 bar
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Pilot air ports |
Threaded connection G 1⁄8 Stainless steel or push-in connector (pipe Ø 6 mm / 1⁄4″)
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Positioning system |
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Circuit function
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Single-acting
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Air capacity | 7 IN/min (for aeration and ventilation) (QNn value acc. to definition at pressure drop from 7 to 6 bar absolute) |
Actuator series/size: Pneumatic Control unit / Position feedback
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Type 21xx, actuator Ø 50 mm
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Actuator series/size: Position feedback | Type 20xx, actuator Ø 40 bis 225 mm |
Approvals and Certificates |
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Conformity
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EMC directive 2014/30/EU
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Ignition protection |
II 3D Ex tc IIIC T135 °C Dc / II 3G Ex ec IIC T4 Gc / II 2D Ex ia IIIC T135 °C Db / II 2G Ex ia IIC T4 Gb
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UL |
cULus certificate; E238179
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ATEX |
II 3D Ex tc IIIC T135 °C Dc / II 3G Ex ec IIC T4 Gc / Certificate; BVS 14 ATEX E 008 X / II 2D Ex ia IIIC T135 °C / II 2G Ex ia IIC T4 Gb / Certificate; BVS 13 ATEX E104 X
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IECEx |
Ex tc IIIC T135 °C Dc / Ex ec IIC T4 Gc Certificate; IECEx BVS 14.0009 X / Ex ia IIIC T135 °C / Ex ia IIC T4 Gb Certificate; IECEx BVS 13.0105X
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Environment and Installation |
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Installation and mechanical data: Installation position
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As required, preferably with actuator in upright position
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Installation and mechanical data: Valve actuator
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ELEMENT Type 21xx (Actuator size Ø 50 mm) / CLASSIC Type 20xx (Actuator size Ø 40…225 mm) only in combination with posi- tion feedback without pilot valve
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Operating conditions |
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Ambient temperature (max.) with/without pilot valve
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0…+55 °C (II 3D Ex tc IIIC T135 °C Dc, II 3G Ex nA IIC T4 Gc) 0…+55 °C (II 2D Ex IIIC ia T135 °C Db, II 2G Ex ia IIC T4 Gb)
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Ambient temperature (max.) with pilot valve |
– 10…+ 55 °C (without ATEX resp. for II 2G Ex ia IIC T4 Gb)
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Ambient temperature (max.) without pilot valve |
– 20…+ 60 °C (without ATEX resp. for II 2G Ex ia IIC T4 Gb)
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Degree of protection
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IP65/IP67 acc. to EN 60529, 4X acc. to NEMA 250 standard
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Operating altitude | Up to 2000 m above sea level |
*For selecting thecorrect product please refer to the technical data, images and notes for proper use according to the data sheet, or contact Flu-Tech directly.
สอบถามข้อมูลเพิ่มเติม ติดต่อเรา :
02-384-6060 (อัตโนมัติ) [email protected] บริษัท ฟลูเทค จำกัด Flu-tech @flutech.co.th