Control head for decentralized automation of ELEMENT process valves
Type 8691 / Ident No. 264996
Product description
The control head Type 8691 is designed for decentralized automation of ELEMENT Type 21xx pneumatic process valves. The registration of the valve end position is done through a contact-free analog position sensor, which automatically recognises and saves the valve end position through the Teach function when starting up. The integrated pilot valve controls single or double-acting actuators. As an option a fieldbus interface, AS-Interface, DeviceNet, IO-Link or büS (based on CANopen) can be chosen.The design of the control unit and the actuator enables an internal control air channel without external tubings. Besides the electrical position feedback signal the status of the device is shown directly on the control head itself through coloured powerful LEDs showing a clear visible valve position status, even under dirty or dark environments. 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. Focused on wash down applications the IP rating is supported by a positive pressure inside the control head. Combined with Bürkert ELEMENT actuators the unique pilot valve system enables a compressed air recycling that avoids actuator chambers contamination from the environment.
- Commodity Codes
- 90268020
- Stát
- DE
Technical attributes
Jméno |
Value |
Unit |
---|---|---|
Type | 8691 | |
Product sub-group | Control head / Position indicator | |
Function | Control head | |
Valve function manual actuation | Yes | |
Pneumatic pilot valve 1 | 6144 | |
Pneumatic function 1 double acting | No | |
Pneumatic function 1 single acting | Yes | |
Valve diameter | 3 | mm |
QNn value (gas) | 250 | l/min |
Temperature environment min | -10 | °C |
Temperature environment max | 55 | °C |
End position feedback internal | 2 | PCE |
End position feedback external | 0 | PCE |
End position feedback type | Inductive displacement transducer PNP | |
End position feedback voltage min | 0 | V |
End position feedback voltage max | 24 | V |
End position feedback DC voltage | Yes | |
End position feedback AC voltage | No | |
End position feedback top | yellow | |
End position feedback bottom | green | |
For Actuator size 40 mm | No | |
For Actuator size 50mm | Yes | |
For Actuator size 63mm | Yes | |
For Actuator size 70mm | No | |
For Actuator size 80mm | Yes | |
For Actuator size 90mm | No | |
For Actuator size 100mm | Yes | |
For Actuator size 125mm | Yes | |
For Actuator size 130mm | No | |
For Actuator size 175mm | Yes | |
For Actuator size 225mm | Yes | |
Port connection 1 type | Inner thread | |
Port connection 1 thread type | G | |
Port connection 1 thread marking | 1/8 | |
Electrical connection sort | Screw terminal with cable feed-through | |
Voltage / rated voltage | 24 | V |
Voltage / rated voltage | 24 | V |
Supply system-internal | No | |
Supply via BUS | No | |
Supply via separating barrier | No | |
AC voltage | No | |
DC voltage | Yes | |
Mounting type | CLASSIC drive | |
Protection type (IP max. with suitable connector) | 65/67 | |
Weight | 0,490000 | kg |
Approval type | , | |
Certification type | , , , |
Downloads
Data Sheets
User Manuals
Software
Popis |
Filesize |
Language / Country |
|
---|---|---|---|
![]() |
Buerkert Communicator 3.3.1 | 242,9 MB | ML |
![]() |
Initiation Files EDS IODD A.02 | 3,2 MB | ML |
EU Declaration
Popis |
Filesize |
Language / Country |
|
---|---|---|---|
![]() |
EU-DoC|EU Declaration | 1,4 MB | EN,FR,DE |
![]() |
EU-DoC|EU Declaration | 1,7 MB | EN,FR,DE |