Bürkert Type 8691 Control Head for Decentralised Automation of ELEMENT Process Valves
Bürkert · Valves · Control Valves
The device Type 8691 control head is designed for decentralised automation of ELEMENT Type 21xx pneumatic process valves. The valve position is registered via a contact-free, analogue sensor element which automatically detects and saves the valve end position using the Teach function during start-up. The integrated pilot valve controls single or double-acting actuators. An optional communication interface, AS-Interface, IO-Link or büS (based on CANopen) can be selected. The design of the control head and the actuator permits integrated pilot air duct without external piping. Besides the electrical position feedback, the device status is shown directly on the control head itself through coloured powerful LEDs, even in difficult ambient conditions. 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. Focused on plant wash-down applications, the IP protection of the housing is supported by positive pressure inside the control head. Combined with Bürkert ELEMENT actuators, the pneumatic actuating system enables spring chamber aeration that avoids actuator chamber contamination from the environment.
Specifications
- Part number
- Type 8691
- HS code
- 8481.80
Also known as — OEM cross-references & superseded numbers
- Burkert 8691
- Buerkert 8691
- Bürkert 8691
- Type 8691
- Burkert Type 8691
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