Type 8690 Pneumatic Control Unit
The Type 8690 pneumatic control unit is designed for decentralized automation of ELEMENT Type 21xx pneumatic process valves. It features integrated pilot valves, visual position indicators, and is suitable for hygienic processing in industries such as food, beverage, and pharmaceuticals.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Body Material | PPS |
| Seal Material | EPDM |
| Cover material | PC |
| Setting of valve and end position | Manual |
| Manual override of pilot valve | Yes |
| Display of the device and valve status | Optical |
| Optical position indicator (mechanical) | Yes |
| Stroke range for linear actuator | 2...28mm |
| Valve spindle, initiator | 2...28mm |
| Valve spindle, micro switch | 7...28mm |
| Micro switch | 2x micro switch (24VDC) or 1x micro switch only for upper end position |
| Initiator | 2x inductive proximity switch 3-wire (24VDC) or 1x adjustable for lower/upper end position |
| Operating voltage of pilot valve | 24VDC ±10%, residual ripple 10% DC |
| Power Consumption | ≤1W |
| Micro switch max current | 24VDC, max. 2A |
| Initiator max current | 10...24VDC, max. 100mA external load per initiator |
| Protection Class | III according to DIN EN 61140 |
| Multipole variant | M12, 8-pin |
| Cable gland variant | M16×1.5 (cable Ø5...10mm) with screw-type terminals for cable cross sections 0.14...1.5mm² |
| Control Medium | Neutral gases, air, quality class according to ISO 8573-1 |
| Dust Content | Class 7 (<40μm particle size) |
| Particle Density | Class 5 (<10mg/m³) |
| Pressure Dew Point | Class 3 (-20°C or min. 10°C below the lowest operating temperature) |
| Oil Content | Class X (<25mg/m³) |
| Air supply filter | Exchangeable |
| Mesh Size | Approx. 0.1mm |
| Supply pressure | 3...7bar |
| Pilot Air Port | Threaded connection G1/8, stainless steel or push-in connector (pipe Ø6mm or ¼") |
| Circuit Function | Single and double-acting |
| Air capacity | 250l/min (for aeration and ventilation) |
| Actuator Series/Size | Type 21xx, actuator Ø70/90/130/225mm |
| Ambient temperature with pilot valve | -10...+55°C |
| Ambient temperature without pilot valve | -20...+60°C |
| Degree of Protection | IP65/IP67 according to EN 60529, 4X according to NEMA 250 Standard |
| Operating Altitude | Up to 2000m above sea level |
| Installation Position | As required |
| Installation Position | preferably with actuator in upright position |
| Approvals | ATEX II cat. 3G/D and cat. 2G/D approval, IECEx, UL, FM, CCC |
Applications
Key Features
Datasheet
Supplier Information
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