Page 237 - Bürkert

Control Tops and Feedback Packages for
Pneumatically Actuated Valves

Type 8691
8690 / 8691 • Spring chamber vent

• Flushing function
• Optical position indicator
• Integrated air supply

Type 8690

The pneumatic control units, Type 8690 and Type 8691, are optimised for the integrated mounting Envelope Dimensions [mm]
on process valves series 21XX. At the 8691 bright coloured LEDs indicate the current status of the (see datasheet for details)
process valves (visible from a distance). Chemically resistant PPS housing is designed in accord-
ance with EHEDG guidelines for use in hygienic environments. Especially for the system cleaning Type 8690
the IP protection of the housing is supported by overpressure in the control head.

Technical Data
8690 8691
Pilot valve 24 V DC ±10%, residual ripple 10% 24 V DC ±10%, residual ripple 10%
(no technical direct current); 1 W (no technical direct current); 2 W
Micro switch Max. 24 V DC, max. 2A
Initiator 10 to 24 V DC, max. 100 mA ext. load PNP, 10 to 24 V DC, max. 100 mA Type 8691
per initiator
Electrical connection Cable gland or 8-pin M12 Cable gland or 8-pin M12 , AS-i Connect
Buses available – DeviceNet, AS-i
Optical feedback – SuperBRIGHT LED
Media Instrument air Instrument air
Body, Cover, Seal PPS, PC, EPDM PPS, Stainless steel, PC, EPDM
Push in connector (external Ø 6 mm or 1/4”) or threaded ports G 1/8
Integrated filter 0.1 mm (exchangeable) 0.1 mm (exchangeable)
Supply pressure 3-7 bar g 3-7 bar g
Accreditations IP65/67, CE, (CSA pending) IP65/67, CE, CSA (pending)
Ambient temperature with pilot valve 0 °C to +55 ºC 0 ºC to +55 ºC Type A B
without pilot valve -10 °C to +50 °C 8690 91 86
Protection class IP65 and IP67 acc. to EN 60529 IP65 and IP67 acc. to EN 60529 8691 91 119
Insulation class 3 acc. to VDE 0580 3 acc. to VDE 0580
Conformity acc. to CE in compliance with acc. to CE in compliance with
EMV2004/108/EG EMV2004/108/EG

Options
8690
• Versions for double acting actuators

8691
• Versions for double acting actuators

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