8691 BURKERT | Alldatasheet
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Visit product website DATA SHEET Type 2100 Pneumatically operated 2/2-way angle seat valve ELEMENT for decentral- ized automation Type 2101 Pneumatically operated 2/2-way globe valve ELEMENT for decentral- ised automation Type 2103 2/2-way diaphragm valve with pneumatic stainless steel actuator (Type ELE- MENT) for decentralised automation Type 2104 T-diaphragm valve with pneumatic actuator in stainless steel (Type ELE- MENT) for decentralised automation Type 2105 Tank bottom diaphragm valve with pneumatic actuator in stainless steel (Type ELEMENT) for decentralised automation Type 2106 Pneumatically operated 3/2-way seat valve ELEMENT for decentral- ized automation Standard | EU | en | 2024 - 03 - 06 | 25 Control head for decentralised automation of ELEMENT process valves
- Contact-free inductive valve position registration (Teach function) Colour illuminated status display Integrated pilot air duct in the actuator Fieldbus interface AS-Interface, IO-Link or Bürkert system bus (büS) With ATEX II cat. 3G/D / IECEx approval 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 inter- face, AS-Interface, IO-Link or büS (based on CANopen) can be selected. The design of the control head and the actuator permits internal control air routing 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 phar - maceutical 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 environ ment. Product variants described in the data sheet may differ from the product presentation and description. Type description Can be combined with Type 8691 © Christian Bürkert GmbH & Co. KG, Subject to alteration
2 | 14Visit product website Table of contents 1. General technical data 3 1.2. Without fieldbus communication: 24 V DC 1.3. With fieldbus communication: AS-Interface 1.4. With digital communication: IO-Link 1.5. With digital communication: Bürkert system bus (büS) 1.6. Functional overview Type 8691 2. Approvals and conformities 7 2.2. Conformity 2.3. Standards 2.4. Explosion protection 2.5. North America (USA/Canada) 2.6. Others China Compulsory Certification (CCC) 3. Materials 8 4. Dimensions 8 5. Device/Process connections 9 Without fieldbus communication 24 V DC AS-Interface connection IO-Link connection Bürkert system bus (büS) connection 6. Product installation 11 7. Ordering information 12 7.2. Bürkert product filter 7.3. Ordering chart 7.4. Ordering chart accessories Standard accessories Adapter kits
3 | 14Visit product website 1. General technical data 1.1. Control head Type 8691 Product properties Dimensions Further information can be found in chapter “4. Dimensions” on page 8 Material Body PPS, stainless steel Seal EPDM Cover PC Operation Operating keys 2 Service interface Connected to PC via USB connection Configuration tool Bürkert Communicator Commissioning Setting valve end position Through automatic or manual teach function Manual operation of pilot valve Yes Status display Display of device and valve status High-power LEDs (colours individually adjustable) Communication Fieldbus AS-Interface, IO-Link Digital Bürkert system bus (büS) (based on CANopen) Performance data Functional overview Further information can be found in chapter “1.6. Functional overview Type 8691" on page 6 Position sensor Analogue position sensor Inductive (contactless) with self-adjusting switching points (PNP) (NPN on request) Stroke range for linear actuator Valve spindle 2.5…45 mm Electrical data Electrical connection Multipole version M12, 8-pin resp. 4- or 5-pin according to device version (see “5. Device/Process connections” on page 9 Cable gland version M16 1.5 (terminal range 5…10 mm) With screw terminals for cable cross sections 0.14…1.5 mm² Pneumatic data Control medium Neutral gases, air, quality class according to ISO 8573 Dust content Class 7 (< µm particle size) Particle density Class 5 (< mg/m3) Pressure dew point Class 3 (<- °C) Oil content Class X (< mg/m3) Air supply filter Exchangeable Mesh size ~0.1 mm Supply pressure 3…7 bar 1.) Pilot air port Threaded connection G ⅛, stainless steel Positioning system Circuit function Single and double-acting Air capacity 250 lN/min (for aeration and ventilation) (QNn value according to definition at pressure drop from 7 to 6 bar abs) Actuator series/size Type 21xx, actuator Ø 70/90/130/225 mm
4 | 14Visit product website Approvals and conformities Explosion protection Ignition protection class II 3D Ex tc IIIC T135 °C Dc II 3G Ex ec IIC T4 Gc ATEX BVS 14 ATEX E 008 X II 3D Ex tc IIIC T135 °C Dc II 3G Ex ec IIC T4 Gc IECEx IECEx BVS 14.0009 X Ex tc IIIC T135 °C Dc Ex ec IIC T4 Gc Further information can be found in chapter “2.4. Explosion protection” on page 7 North America (USA/Canada UL Listed for the USA and Canada cULus certificate: E238179 Further information can be found in chapter “2.5. North America (USA/Canada)” on page 7 FM Explosion Protection Increased Safety for Class I, Zone 2, AEx ec IIC T4 Gc hazardous (classified) locations, indoors and outdoors (IP54). Alternatively marked as Class I Division 2 Groups A, B, C, and D; T4. Further information can be found in chapter “2.5. North America (USA/Canada)” on page 7 Others China Compulsory Certification (CCC) The products with Ex approval are suitable for import and use for hazardous applications in China. Further information can be found in chapter “2.6. Others” on page 7 Further information can be found in chapter “2. Approvals and conformities” on page 7 Environment and installation Operating conditions Ambient temperature With pilot valve - 10…+ 55 ºC Without pilot valve - 20…+ Degree of protection IP65/IP67 according to EN 60529, 4X according to NEMA 250 Standard Operating altitude Up to 2000 m above sea level Installation and mechanical data Mounting variants Direct mounting Installation position As required, preferably with actuator in upright position Valve actuator (type, size) ELEMENT Type 21xx (actuator Ø 70/90/130/225 mm) Adapter kit Further information can be found in chapter “Adapter kits” on page 14 1.) The supply pressure applied must be 0.5 to 1 bar above the minimum required pilot pressure of the valve actuator. 1.2. Without fieldbus communication: 24 V DC Electrical data Operating voltage 24 V DC ± UL: NEC Class 2 Residual ripple 10 Power consumption 2 W or 5 W at maximum load on an active digital output Protection class III according to DIN EN 61140 Electrical connection Multipole version M12, 8-pin Cable gland version M16 x 1.5 (cable Ø 5…10 mm) with terminals for cable cross-sections 0.14…1.5 mm² Input/Output Output Max. 100 mA per output
5 | 14Visit product website 1.3. With fieldbus communication: AS-Interface Product properties Electrical data Operating voltage Via ASi power supply 29.5…31.6 V DC (according to specification), UL: NEC Class 2 Protection class III according to DIN EN 61140 Power consumption Max. current consumption 110 mA Unit with additional actuator supply (AUX Power) External power supply 24 V DC ± % (the power supply unit must contain one secured disconnection according to IEC 364 41 (PELV or SELV)) System supply Max. 110 mA without additional actuator supply (AUX Power), with pilot valve. Max. 60 mA with additional actuator supply or without pilot valve Actuator supply Max. 50 mA with additional actuator supply Electrical connection M12, 4-pin Output Contact rating pilot valve Approx. 0.8 W Watchdog function Integrated 1.4. With digital communication: IO-Link Electrical data Electrical connection M12 x 1, 5-pin, A-coded IO-Link revision 1.1 SIO-Mode Nein VendorID 0x0078, 120 DeviceID See IODD file (the IODD file can be downloaded from our website Type 8691 , see Software > Device Description Files) Transmission rate 230.4 kbit/s Data storage Yes Maximum cable length 20 m Port class A and B Power supply Via IO-Link Port Class A Operating voltage 24 V DC ± % (according to specification) System supply Max. 150 mA with pilot valve Max. 100 mA without pilot valve Port Class B Operating voltage System supply (Pin 1 3) 24 V DC ± % (according to specification) Actuator supply (Pin 2 5) 24 V DC ± % (according to specification) Current consumption System supply (Pin 1 3) Max. 100 mA Actuator supply (Pin 2 5) Max. 50 mA 1.5. With digital communication: Bürkert system bus (büS) Electrical data Operating voltage 18…30 V DC (according to specification) Electrical connection M12 1, 5-pin, A-coded Current consumption Max. 120 mA
6 | 14Visit product website 1.6. Functional overview Type 8691 Function Version V IO-Link AS- Interface Stand- ard-Slave AS- Interface A/B-Slave büS/ CANopen Basic functions Teach function position sensor X X X X X Manual override of pilot valve (mechanical) X X X X X Manual override of pilot valve (electrical) – X – – X Position feedback process valve X X X X X Feedback signal current valve position (intermediate position) – X – – – Optical position feedback/status display high-performance LEDs X X X X X Colour change of the optical position feedback possible (LED in 3 colours: green, yellow, red) X X X X X Selection of LED display modes – X – – X Diagnostic LEDs – X X X X Selection of different LED display modes – X – – X Date storage function – X – – – Locating function – X – – X büS communication interface (Bürkert system bus) – – – – X büS service interface (for Bürkert Communicator software) – X – – X Diagnosis Process valve switching cycles counter with definable limit value – X – – X Pilot valve switching cycles counter – X – – X Operating hours counter with definable limit value – X – – X Process valve counter for opening/closing timeout – X – – X Travel accumulator with definable limit value – X – – X Active diagnostic messages (feedback when limit values are exceeded) – X – – X Diagnosis reset command (to reset counter values) – X – – X Error feedback displacement transducer – X X X X Self-monitoring control head with automatic error message – X X Feedback Teach error X X X X X Feedback overtemperature – X X Feedback communication error – X X X X Feedback for opening/closing timeout – X – – X Tolerance for switching time overrun – X – – X Error detection if the setpoint position is not reached (end positions not reached) – X – – X Tolerance band of end position detection – X – – – Detection of under-voltage and over-voltage of power supply – X – – X Log function for error cases – X – – X Parameterization Enable/disable safety position in case of setpoint or bus error – X – – X Selecting and setting the SIO mode – X – – – Selection of digital outputs (end positions) PNP, NPN X X – – – Selection of digital outputs (end positions) PNP, NPN, PP – X – – – Deactivation of local operation (lock function) – X – – X Factory reset function (reset to factory setting) – X – – X
7 | 14Visit product website 2. Approvals and conformities 2.1. General notes
- The approvals and conformities listed below must be stated when making enquiries. This is the only way to ensure that the pro duct complies with all required specifications. Not all available versions can be supplied with the below mentioned approvals or conformities. 2.2. Conformity In accordance with the Declaration of Conformity, the product is compliant with the EU Directives. 2.3. Standards The applied standards which are used to demonstrate compliance with the EU Directives are listed in the EU-Type Examination Certificate and/or the EU Declaration of Conformity. 2.4. Explosion protection Approval Description Optional: Explosion protection ATEX: BVS 14 ATEX E 008 X II 3D Ex tc IIIC T135 °C Dc II 3G Ex ec IIC T4 Gc IECEx: IECEx BVS 14.0009 X Ex tc IIIC T135 °C Dc Ex ec IIC T4 Gc 2.5. North America (USA/Canada) Approval Description Optional: UL Listed for the USA and Canada The products are UL Listed for the USA and Canada according to: UL 61010 1 (ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE – Part 1: General Requirements) CAN/CSA-C22.2 No. 61010 Optional: FM (Factory Mutual) – Explosion Protection Increased Safety for Class I, Zone 2, AEx ec IIC T4 Gc hazardous (classified) locations, indoors and outdoors (IP54). Alternatively marked as Class I Division 2 Groups A, B, C, and D; T4. 2.6. Others China Compulsory Certification (CCC) Conformity Description Optional: China Compulsory Certification (CCC) The products with Ex approval are suitable for import and use for hazardous applications in China.
8 | 14Visit product website 3. Materials 3.1. Material specifications No. Element Material
1 Cover PC
2 Seal EPDM
3 Body casing Stainless steel
4 Seal EPDM
5 Push-in connector
6 Basic housing PPS
7 Screws Stainless steel
8 M12 plug connector M12 Stainless steel
- Dimensions 4.1. Mounting on process valve ELEMENT Type 21xx Note: Dimensions in mm 54.1 17.1 Ø 91 119 13.5 32 14.6 103 84.3
9 | 14Visit product website 5. Device/Process connections 5.1. Electrical connections Without fieldbus communication 24 V DC M12 circular plug, 8-pin Pin Description Pin assignment
1 Limit switches 1 IN 1/TOP
2 Limit switches 2 IN 2/BOTTOM
3 Operating voltage GND
4 Operating voltage + 24
V DC
5 Valve control + Valve +
6 Valve control – Valve –
7 – Not assigned 8 – Not assigned Cable gland Input signal Pin Pin assignment
1 Valve connection
2 Connecting terminals
3 Connecting terminals
4 Connecting terminals
Valve (input signal)
10 | 14Visit product website AS-Interface connection M12 circular plug, 4-pin, without external power supply 1 2 Pin Description Pin assignment
1 Bus + Bus cable AS-Interface +
2 NC Not assigned
3 Bus – Bus cable AS-Interface –
4 NC Not assigned
5 NC Not assigned
M12 circular plug, 4-pin, with external power supply (on request) 1 2 Pin Description Pin assignment
2 GND (optional) External power supply
V + (optional) External power supply M12 circular plug, 5-pin, Port Class A 1 2 Pin Description Pin assignment
1 L + 24
V DC System supply
2 I/Q NC Not connected
3 L – 0
V (GND) System supply
4 C/Q IO-Link Communication
5 NC NC Not connected
M12 circular plug, 5-pin, Port Class B 1 2 Pin Description Pin assignment V DC System supply
2 P24 24
V DC Actuator supply V (GND) System supply
5 N24 0
V (GND) Actuator supply Bürkert system bus (büS) connection M12 circular plug, 5-pin 1 2 Pin Description Cable colour Supply voltage: 18…30 V DC (büS)
2 V + Red
3 V – Black
1 Drain/Shielding –
4 CAN_H White
5 CAN_L Blue
11 | 14Visit product website 6. Product installation 6.1. Combination options with pneumatic process valves Note: A complete TopControl control valve system Type 8691 and an ELEMENT process valve Type 21xx. The following information is required to select a complete system: Article no . of the desired control head, see data sheet Type 8691 Article no . of the desired process valve Type 21xx, see data sheet Type 2100 , Type 2101 and Type 2103 You order two components and receive a completely assembled and tested valve. Example of decentralised automation of On/Off ELEMENT valve systems Control head Pneumatic process control valves Type 8691 Type 2100 Angle seat valve Type 2101 Globe valve Type 2103 Diaphragm valve Hygienic process valve (third-party) Valve system On/Off ELEMENT Type 8801-YE-H Valve system ELEMENT 2100 8691 Type 8801-GC-H Valve system ELEMENT 2101 8691 Type 8801-DF-H Valve system ELEMENT 2103 8691 Mounting on third- party actuators 1.) 1.) See data sheet adaptations for third-party actuators Type KK01 or contact the relevant Bürkert sales office.
12 | 14Visit product website 7. Ordering information 7.1. Bürkert eShop Bürkert eShop – Easy ordering and quick delivery You want to find your desired Bürkert product or spare part quickly and order directly? Our online shop is available for you 24/7. Sign up and enjoy all the benefits. Order online now 7.2. Bürkert product filter Bürkert product filter – Get quickly to the right product You want to select products comfortably based on your technical requirements? Use the Bürkert product filter and find suitable articles for your application quickly and easily. Try out our product filter
13 | 14Visit product website 7.3. Ordering chart Note: All standard versions are UL-approved (UL approval for IO-Link. Communication Electrical connection Circuit function Pilot valve system Pilot air port (threaded port) Article no. Standard ATEX II Cat. 3G/D, IECEx, CCC 1.) AS-Interface Slave profile: S-B.A.E (AB-Slave, max. 62 slaves) M12 circular plug connector Single-acting G ⅛ 227254 264988 Double-acting G ⅛ 227240 264975 M12 circular plug connector/ Flat cable clip/80 cm cable Single-acting G ⅛ 227258 264990 Double-acting G ⅛ 227244 264977 IO-Link M12 circular plug connector Single-acting G ⅛ 307371 321927 Double-acting G ⅛ 307368 321925 Bürkert system bus (büS) M12 circular plug connector Single-acting G ⅛ 307375 321931 Double-acting G ⅛ 307373 321929 Without G ⅛ 307379 321935 Without fieldbus communication M12 circular plug connector Single-acting G ⅛ 227262 264992 Double-acting G ⅛ 227248 264979 Without G ⅛ 246211 264972 Cable gland Single-acting G ⅛ 227260 264991 Double-acting G ⅛ 227246 264978 Without G ⅛ 264943 264971 1.) CCC (China Compulsory Certificate) for device versions with Ex approval Further versions on request Additional büS/CANopen
14 | 14Visit product website 7.4. Ordering chart accessories Standard accessories Note: Must be ordered separately. Description Article no. M12 circular socket with cable, 8-pin, cable length: 5 m, for input and output signals 919267 AS-interface flat cable clamp, M12 outlet, stainless steel outlet 799646 USB büS interface set 2 (Type 8923) for connection to the Bürkert Communicator software: including büS stick, connection cable to M12 plug, M12 connection cable on micro USB for the büS service interface and Y distributor, cable length: 0.7 m 772551 büS cable extension, M12, cable length: 1 m 772404 büS cable extension, M12, cable length: 3 m 772405 büS cable extension, M12, cable length: 5 m 772406 büS cable extension, M12, cable length: 10 m 772407 Silencer G ⅛ 780779 Sensor Puck (spare part) 682240 Software Bürkert Communicator Type 8920 Adapter kits Note: Must be ordered separately. Adapter kits for third-party actuators can be found in the data sheet Adaptation for third-party actuators Type KK01 or contact the appropriate Bürkert sales office. Description Actuator size Control function Article no. Attachment kit for Type 21xx/23xx actuator series Ø 70/90/130 mm Universal 679917 Attachment kit for Type 21xx/23xx actuator series Ø 225 mm Universal 60025906