Bürkert 8791 Quick Start Manual
Sidecontrol basic electropneumatic positioner
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Also See for 8791:
- Operating instructions manual (186 pages) ,
- Assembly instructions manual (16 pages) ,
- Quick start manual (40 pages)
Related Manuals for Bürkert 8791
Summary of Contents for Bürkert 8791
- Page 1 Type 8791 Positioner SideControl BASIC Electropneumatic positioner Elektropneumatischer Positioner Régulateur de position électropneumatique Quickstart English / Deutsch / Français...
- Page 2 We reserve the right to make technical changes without notice. Technische Änderungen vorbehalten. Sous réserve de modifications techniques. © Bürkert Werke GmbH & Co. KG, 20 - 2017 Operating Instructions 1705/0 _ / Original DE...
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Page 3: Table Of Contents
Type 8791 Positioner Type 8791 1 Quickstart ....................5 8 attachment and assemBly ............17 Definition of term / abbreviation ..........5 Installation of devices for the hazardous area ....17 Symbols ..................5 Attachment to a proportional valve with NAMUR linear ..actuators ..................17 2 authorized use . - Page 4 Type 8791 12 accessories ................... 35 12.1 Communications software.............35 12.2 USB interface ................35 12.3 Download ..................35 13 packaGinG, transport, storaGe .......... 36 english...
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Page 5: Quickstart
Warns of a potentially dangerous situation. ▶ Quickstart must be read and understood. ▶ Failure to observe the warning may result in serious injuries or death. Quickstart for positioner Type 8791 explains, for example, how to CauTion! install and start-up the device. Warns of a possible danger. A detailed description of the device can be found in the operating ▶... -
Page 6: Authorized Use
▶ Pulsating direct voltage (rectified alternating voltage without smoothing) must not be used as power supply. ▶ In the potentially explosion-risk area the positioner Type 8791 may be used only according to the specification on the separate Ex type label. For use observe the additional information enclosed with the device together with safety instructions for the explosion-risk area. -
Page 7: Basic Safety Instructions
Type 8791 Basicsafetyinstructions Basic safeTy insTrucTions ▶ The general rules of technology apply to application planning and operation of the device. These safety instructions do not make allowance for any To prevent damage to property of the device, ensure: • contingencies and events which may arise during the installation, ▶... -
Page 8: General Information
Contact addresses can be found on the final pages of these printed Supply pressure operating instructions. connection 1.4 – 7 bar (connection: P) And also on the internet at: www.burkert.com Working connection 1 (connection: A1) Air exhaust connection/ air exhaust filter Pressure-relief valve Fig. 1: Structure, positioner Type 8791 english... -
Page 9: General Description
Fig. 2: Structure, positioner Type 8791 Warning! 5.2 General description The positioner Type 8791 is a digital, electro-pneumatic position if used outside, the device may be exposed to direct sunlight controller for pneumatically actuated proportional valves. The device and temperature fluctuations which may cause malfunctions incorporates the main function groups or leaks. ▶ If the device is used outdoors, do not expose it unprotected to - Position sensor the weather conditions. -
Page 10: Mechanical Data
Type 8791 Technicaldata 6.5 electrical data Environmental temperature 0 to +60 °C Connections 2 cable glands (M20 x 1.5) with screw- type terminals 0.14 – 1.5 mm or circular Degree of protection IP65 / IP67 according to EN 60529 plug-in connector (M12, 8 pole plug) -
Page 11: Electrical Data With As-Interface Bus Control (Optional)
Type 8791 Technicaldata 6.6 electrical data with as-interface bus 6.7 pneumatic data control (optional) Control medium Quality classes in accordance with ISO 8573-1 Connections circular plug-in connector (M12, 4 pole plug) Dust content Class 7, max. particle size 40 µm, max. par- ticle density 10 mg/m³... -
Page 12: Operating
Type 8791 Operating 7.2 control and display elements of the operaTinG positioner 7.1 operating status Key 1 automatic (auto) DIP Switches Normal controller mode is implemented and monitored in AUTO- LED 1 (MODE) MATIC operating status. LED 2 (POSITION) → LED 1 (MODE) flashes green. LED 3 (FAULT) - Page 13 Type 8791 Operating 7.2.1 configuration of the keys MANUAL operating status (DIP switch 4 set to ON): The configuration of the 2 buttons inside the housing varies depending Function on the operating status (AUTOMATIC / MANUAL). The description of the operating status (AUTOMATIC / MANUAL) can Aerate be found in the chapter entitled “7.1 Operating status”.
- Page 14 Type 8791 Operating 7.2.2 function of the Dip switches DiP- Position Function Switches Correction characteristic for adjustment of the operating characteristic (Linearization of the operating characteristic CHARACT) 1 2 3 4 Linear characteristic MANUAL operating status DiP- Position Function AUTO AUTOMATIC operating status Switches Factory setting can be changed via communications software.
- Page 15 Type 8791 Operating 7.2.3 Display of the leDs LeD 2 (green / yellow, POSITION) LED 1, green (MODE) LeD-Status Display of Display green yellow AUTO, MANUAL, X.TUNE Actuator closed LED 2, green / yellow (POSITION) Display of actuator status Actuator open (open, closed, opens or closes)
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Page 16: Error Messages
Type 8791 Operating 7.3 error messages 7.3.2 e rror messages while the X.TUNE function is running 7.3.1 e rror messages in manual and auTomaTic operating status Display Cause of fault remedial action remedial LED 3 No compressed air Connect compressed air Display Cause of fault action (red, connected FAULT) LED 3... -
Page 17: Attachment And Assembly
Type 8791 Attachmentandassembly aTTachmenT anD assemBly NAMUR lever for stroke range 35 – 130 mm 8.1 installation of devices for the U-bolt hazardous area Hexagon bolt DIN 933 M8 x 20 When installing devices in the hazardous area, observe the “Addi- Hexagon bolt DIN 933 M8 x 16 tional information for use in the hazardous area“... - Page 18 Type 8791 Attachmentandassembly → 8.2.1 installation Select short or long lever according to the stroke of the actuator (see “Tab. 8: Attachment kit for linear actuators”, part no. 6a/6b). Warning! → Assemble lever (if not pre-assembled) (see “Fig. 7”). risk of injury from improper installation.
- Page 19 Type 8791 Attachmentandassembly The gap between the driver pin and the axle should be the 180° same as the drive stroke. This results in the ideal angular Maximum rotational range of the lever of 60° (see “Fig. 8”). range of the lever angular range of the position sensor: The maximum angular range of the position sensor is 180°.
- Page 20 Type 8791 Attachmentandassembly 8.2.2 attaching mounting bracket attaching the positioner with mounting bracket for actuators with cast frame: ① → Attach mounting bracket to the back of the positioner with → Attach mounting bracket to the cast frame with one or more ⑨ ⑩ ⑪ hexagon bolts , circlip and washers (see “Fig.
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Page 21: Attachment To A Proportional Valve With Rotary Actuator
Type 8791 Attachmentandassembly attaching the positioner with mounting bracket for actuators 8.3 attachment to a proportional valve with columnar yoke: with rotary actuator ⑦ → The axle of the position sensor integrated in the positioner is con- Attach mounting bracket to the columnar yoke with the U-bolt ⑪ ⑩ nected directly to the axle of the rotary actuator. - Page 22 Type 8791 Attachmentandassembly 8.3.1 installation angular range of the position sensor: The maximum angular range of the position sensor is 180°. Warning! The axle of the positioner may be moved within this range only. risk of injury from improper installation. ▶ Installation may be carried out by authorised technicians only and with the appropriate tools.
- Page 23 Type 8791 Attachmentandassembly → → Assemble the multi-part assembly bridge* suitable for the Place positioner with assembly bridge on the rotary actuator and actuator. attach (see “Fig. 14”). → Attach the assembly bridge to the positioner using 4 cheese- ③...
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Page 24: Remote Operation With External Position Sensor
Type 8791 Attachmentandassembly 8.4 remote operation with external 8.4.2 c onnection and start-up of the remote-sensor Type 8798 position sensor In the case of this model the positioner has no position sensor in the Warning! form of a rotary position sensor, but an external Remote-Sensor. risk of injury from improper start-up. The Remote-Sensor Type 8798 is connected via a serial, digital ▶... -
Page 25: Fluid Connection
Type 8791 Fluidconnection fluiD connecTion 9.1 connection of devices for the hazardous area When connecting devices in the hazardous area, observe the Working connection 2 “Additional information for use in the hazardous area“ enclosed with (connection: A2) the Ex-devices. Supply pressure connection 9.2 safety instructions 1.4 – 7 bar (connection: P) -
Page 26: Safety End Positions
Type 8791 Fluidconnection for double-acting actuators (control function i): 9.3 safety end positions → Connect working connections A1 and A2 to the respective The safety end position after failure of the electrical auxiliary power chambers of the double-acting actuator. depends on the fluid connection of the actuator to the working con- Safety end positions see chapter “9.3 Safety end positions”. - Page 27 Type 8791 Fluidconnection 9.3.2 Double-acting actuators single-acting actuator - control function A or B safety end positions after failure of actuator system electrical aux- pneumatic iliary power auxiliary power → Connection upper see “Fig. 19” chamber lower up = lower chamber chamber of the not defined actuator to A2 Connection: Connection: working connection A1 to...
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Page 28: Electrical Connection
Type 8791 Electricalconnection 10 elecTrical connecTion 10.3 e lectrical connection with circular plug-in connector m12, 8-pole All electrical inputs and outputs of the device are not galvanically iso- lated from the supply voltage. 10.3.1 D esignation of the circular plug-in connector 10.1 c onnection of devices for the hazardous area When connecting devices in the hazardous area, observe the “Addi- Operating voltage tional information for use in the hazardous area“... - Page 29 Type 8791 Electricalconnection 10.3.4 p in assignment for output signals to 10.3.2 pin assignment for operating voltage the control centre (e.g. plc) - required pin Wire configuration external circuit / signal level for analogue output option only color pin Wire configuration on the external circuit / signal green color device level 24 V DC ± 10 % side max. residual ripple 10% yellow +24 V Analogue + (0/4 –...
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Page 30: Electrical Connection With Cable Gland
Type 8791 Electricalconnection 10.4.1 connection of the terminals 10.4 e lectrical connection with cable → gland Unscrew the 4 screws on the housing cover and remove the cover. The screw-type terminals are now accessible. 11 + → Connect terminals according to the configuration. 12 –... - Page 31 Type 8791 Electricalconnection 10.4.5 Terminal assignment for connecting 10.4.3 T erminal assignment for output the external position sensor (for signals to the control centre (e.g. plc) remote model only) - (required for analogue output option only) on the external circuit / signal terminal configuration device side level terminal configuration on the external circuit / signal Supply device side level sensor + 31 + Analogue 31 + + (0/4 – 20 mA) Remote...
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Page 32: Electrical Installation As-Interface
Bus connection without external / with external supply voltage designation configuration A detailed description of the bus communication can be found in the operating instructions Type 8791. Bus + AS Interface bus line + NC or GND not used or external supply voltage –... -
Page 33: Led Status Display As-Interface
Type 8791 Electricalconnection 10.6 leD status display as-interface Bus led 1 Bus led 2 (green) (red) The LED bus status display indicates the status of the AS-Interface (LED green and red). POWER OFF No data traffic (expired Watch Dog at Bus LED 1, green slave address does not equal 0) -
Page 34: Start-Up
Type 8791 Start-up 11 sTarT-up 11.2 s pecifying the standard settings The basic settings of the positioner are implemented at the factory. 11.1 safety instructions To adjust the positioner to local conditions, the X.TUNE Warning! function must be run following installation. risk of injury from improper operation. Improper operation may result in injuries as well as damage to the 11.2.1 r unning the automatic adjustment... -
Page 35: Accessories
Type 8791 Accessories 12 accessories To run X.TUNE, the positioner must be in the AUTOMATIC operating status designation order no. (DIP switch 4 = OFF). USB adapter for connection to a PC in con- 227093 junction with an extension cable →... -
Page 36: Packaging, Transport, Storage
Type 8791 Packaging,transport,storage 13 packaGinG, TransporT, sToraGe noTe! transport damages. Inadequately protected equipment may be damaged during transport. ▶ During transportation protect the device against moisture and dirt in shock-resistant packaging. ▶ Follow the allowable storage temperature. incorrect storage may damage the device. ▶ Store the device in a dry and dust-free location. - Page 38 www.burkert.com...