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Bürkert 8696, Operating Instructions Manual

The Bürkert 8696 is a sophisticated and reliable flow transmitter that guarantees accurate measurements in various applications. Ensure optimal performance by referring to the Operating Instructions Manual, available for free download on manualshive.com. The manual provides detailed guidance on installation, operation, and maintenance of the product.

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Operating Instructions

Type 8696 REV.2

Positioner Top Control Basic

Electropneumatic Position Controller

Summary of Contents for 8696

Page 1: ...Operating Instructions Type 8696 REV 2 Positioner Top Control Basic Electropneumatic Position Controller...

Page 2: ...he right to make technical changes without notice Technische nderungen vorbehalten Sous r serve de modifications techniques B rkert Werke GmbH Co KG 2019 Operating Instructions 2002 00_EN EN_00805905...

Page 3: ...on with valve types 11 5 3 Features of the valve types 12 5 4 Model for control of third party devices 13 5 5 Structure of the positioner 14 5 5 1 Representation 14 5 5 2 Features 15 5 5 3 Functional...

Page 4: ...s 30 7 4 1 Cutoff LED 30 7 4 2 Manual LED 30 7 4 3 Charact LED 30 7 4 4 Status indicator 31 7 5 Error messages 33 7 5 1 Messages for device status Out of specification 33 7 5 2 Messages Actuator moves...

Page 5: ...53 14 1 Basic functions 53 14 1 1 DIR CMD Reversal of the effective direction of the positioner set point value 55 14 1 2 CUTOFF Sealing function for the positioner 56 14 1 3 CHARACT Characteristic c...

Page 6: ...dbus communication 67 14 2 9 OUTPUT variant Configuration of the analog output only for variant without fieldbus communication 68 14 2 10 Setting the LED mode device status 68 15 SAFETY END POSITIONS...

Page 7: ...ossible danger Failure to observe the warning may result in moderate or minor injuries ATTENTION Warns of damage to property Failure to observe the warning may result in damage to device or system Ind...

Page 8: ...hen using the device observe the permitted data operating conditions and application conditions This information can be found in the contractual documents the operating instructions and on the type la...

Page 9: ...o not subject it to mechanical stress Operate the device only in perfect state and in consideration of the operating instructions Observe the general rules of technology Install the device according t...

Page 10: ...instructions And also on the internet at www burkert com 4 2 Warranty The warranty is only valid if the positioner Type 8696 is used as intended in accordance with the specified application conditions...

Page 11: ...rol tasks in fluid technology and depending on the application conditions different process valves from the B rkert range can be combined with the positioner Angle seat valves straight seat valves or...

Page 12: ...control valves Straight seat control valves Diaphragm Valves Types 2300 2301 2103 Features incoming flow under seat no pressure surges when closing the valve straight flow path of the medium self adj...

Page 13: ...not required to the free pilot air port of the third party device or seal with a plug In rest position means that the pilot valves of the positioner Type 8696 are isolated or not actuated If the ambie...

Page 14: ...ert Communicator The pilot valve system for single acting actuators consists of two solenoid valves 5 5 1 Representation Button 1 Communications interface Button 2 Pilot air port label 1 Exhaust air p...

Page 15: ...ol speed The direct action model has an orifice of DN 0 6 Position feedback The position of the valve can be transmitted to the PLC via an analog 0 4 20 mA output variant without fieldbus communicatio...

Page 16: ...escribes the function of the positioner Type 8696 1 2 Position controller Pilot valve system 1 Aeriation valve 2 Bleed valve Pressure supply Exhaust air Position sensor Actual position External positi...

Page 17: ...nce is negative the bleed valve is controlled via output E1 In this way the position of the actuator is changed until control difference is 0 Z1 represents a disturbance variable Valve opening Valve P...

Page 18: ...e operating characteristic can be implemented Table 3 Basic functions Basic functions Activation with buttons or communications software Function Effect Standard signal3 4 INPUT Select set point value...

Page 19: ...nical stroke range Stroke limit X LIMIT Limit the mechanical stroke range Limit actuating time X TIME Limit the control speed Control parameters X CONTROL Parameterize the position controller Safety p...

Page 20: ...rated in 3 wire or 4 wire connection i e the power 24 V DC is supplied separately from the set point value signal Input for position set point value8 4 20 mA corresponds to 0 100 Digital input8 If a v...

Page 21: ...ct is cULus approved Instructions for use in the UL area see chapter 6 9 Electrical data 6 4 Operating conditions WARNING Solar radiation and temperature fluctuations may cause malfunctions or leaks I...

Page 22: ...max 25 mg m Temperature range 10 50 C Pressure range 3 7 bar Air output pilot valve 7 IN min for aeration and deaeration QNn value according to definition for pressure drop from 7 to 6 bar absolute Co...

Page 23: ...thout fieldbus communication Protection class III as per DIN EN 61140 VDE 0140 1 Connections Circular plug in connector M12 x 1 8 pin Operating voltage 24 V DC 25 max residual ripple 10 Current consum...

Page 24: ...umption System supply Pin 1 3 max 50 mA Actuator supply Pin 2 5 max 100 mA Total power consumption max 3 5 W 10 Actuator supply is galvanically isolated from system supply in accordance with IEC 60664...

Page 25: ...ve 0 100 X TIME Function deactivated Actuating time Open Actuating time Closed 1 s values determined by X TUNE 1 s values determined by X TUNE After implementation of RESET 1 s X CONTROL Deadband Open...

Page 26: ...local control lock is deactivated unlocked factory setting with communication software or fieldbus communication AUTOMATIC AUTO Normal controller mode is implemented and monitored in AUTOMATIC operat...

Page 27: ...the transparent cap do not hold the actuator of the process valve but the basic housing Body casing Basic housing Actuator Transparent cap Figure 11 Open positioner Screw off the transparent cap of t...

Page 28: ...e 12 Description of the buttons ATTENTION Breakage of the pneumatic connection pieces due to rotational impact When unscrewing and screwing in the transparent cap do not hold the actuator of the proce...

Page 29: ...han 2 s 5 s Activates deactivates CUTOFF function Cutoff LED flashes at 5 Hz 0 2 s and at 10 Hz 2 5 s CUTOFF function aktive cutoff LED is lit Press longer than 5 s Starting the X TUNE function Status...

Page 30: ...HARACT active inactive Figure 14 Display of the LEDs 7 4 1 Cutoff LED Color Status Description yellow is lit CUTOFF active yellow is not lit CUTOFF inactive Table 10 Cutoff LED 7 4 2 Manual LED Color...

Page 31: ...Displays in valve mode Valve position open half way closed Device status Error Valve position Valve position status color Device status Error status color Open is lit yellow flashes red alternately w...

Page 32: ...simultaneously the device status with the highest priority is displayed The priority is determined by the severity of the deviation from controlled operation red LED failure highest priority Status di...

Page 33: ...ntact your B rkert Service Center Insufficient temperature detected Device temperature is too low for operation Increase ambient temperature Excess voltage detected Supply voltage is too high for oper...

Page 34: ...not successful Check compressed air supply Run X TUNE again Actuator supply is down The actuator supply voltage is too low Only with IO Link Check actuator supply voltage POS Monitor The set point po...

Page 35: ...of injury from unintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following assembly ensure a controlled restart 8 2 Installation of the po...

Page 36: ...ndercut When installing the switch spindle do not damage the groove ring Push the switch spindle through the guide element ATTENTION Screw locking paint may contaminate the groove ring Do not apply an...

Page 37: ...n of the form seal Form seal Pilot air ports Caution Collets must not be fitted Figure 17 Installation of the sealing rings 3 Install positioner Align the puck and the positioner until 1 the puck can...

Page 38: ...rewing in the fastening screw does not ensure degree of protection IP65 IP67 The fastening screws may be tightened to a maximum torque of 1 5 Nm only Attach the positioner to the actuator using the tw...

Page 39: ...ntire actuator module can be rotated The positioner cannot be rotated contrary to the actuator The process valve must be in the open position for alignment of the actuator module DANGER Risk of injury...

Page 40: ...y from discharge of medium and pressure If the direction of rotation is wrong the body interface may become detached Rotate the actuator module counter clockwise only see Figure 21 Rotate counter cloc...

Page 41: ...nintentional activation of the system and an uncontrolled restart Secure system from unintentional activation Following installation ensure a controlled restart Pilot air port label 1 Exhaust air port...

Page 42: ...rough the exhaust air port Keep the adjacent supply pressure always at least 0 5 1 bar above the pressure which is required to move the actuator to its end position This ensures that the control behav...

Page 43: ...ly and secure to prevent reactivation Observe applicable accident prevention and safety regulations for electrical equipment WARNING Risk of injury from improper installation Installation may be carri...

Page 44: ...ontrol center circular plug M12 x 1 8 pin Connection type 3 wire or 4 wire setting via communication software Connection type 4 wire factory setting Connection type 3 wire The set point value input is...

Page 45: ...logue position feedback Analogue position feedback GND 8 7 GND 0 4 20 mA Table 21 Pin assignment output signals of the control center circular plug M12 x 1 8 pin Operating voltage circular plug M12 x...

Page 46: ...Table 23 Pin assignment 10 4 Electrical Installation b S 1 2 3 4 5 Figure 26 Pin assignment Pin Wire color Configuration 1 CAN plate shielding CAN plate shielding 2 red 24 V DC 25 max residual ripple...

Page 47: ...gs The basic settings of the positioner are implemented at the factory To adjust the positioner to local conditions the X TUNE function must be run following installation 11 2 1 Running the automatic...

Page 48: ...s are automatically transferred to the memory EEPROM provided the X TUNE function is successful When status LED lights red after X TUNE Execute X TUNE again Perform a device restart if necessary The c...

Page 49: ...cable extension see accessories ATTENTION Breakage of the pneumatic connection pieces due to rotational impact When opening or closing the device do not press against the actuator but against the basi...

Page 50: ...Communicator Required components Communications software B rkert Communicator for PC USB b S interface set see accessories Establish connection to PC with USB b S interface set Starting B rkert Commu...

Page 51: ...ith the B rkert Communicator via the communi cation interface 12 2 Technical specifications IO Link IO Link specifications V1 1 2 Supply via IO Link M12 x 1 5 pin A coded Port Class B SIO mode no IODD...

Page 52: ...oped by B rkert with a communication protocol based on CANopen 13 2 Configuration of the fieldbus The required start up files and the description of objects are available on the Internet Download from...

Page 53: ...ut Signal and Stroke Cor rection Characteristic 2 Charact LED green Correction characteristic Charact LED green Linear characteristic Automatic calibration of the position controller X TUNE Automatic...

Page 54: ...UT Entry of the standard signal input for the set point value 4 20 mA 4 wire Reversal of the effective direction set point value DIR CMD Effective direction between input signal and set point position...

Page 55: ...f the actuator Factory setting OFF ascending Position Function ON Reversal of the effective direction of the set point value DIR CMD set point value 20 4 mA corresponds to position 0 100 fall OFF Norm...

Page 56: ...sealing function Table 28 Sealing function The communications software can be used to change the limits for the position set point value as a percentage Activation in the device has priority over the...

Page 57: ...ic correction Activation in the device has priority over the communications software i e settings of the char acteristic correction CHARACT which are modified via the communications software are only...

Page 58: ...he installed valve and the stroke s This characteristic has the properties of the pipelines pumps and consumers It therefore exhibits a form which differs from the flow characteristic Position set poi...

Page 59: ...stroke values of two adjacent nodes must not be greater than 20 Example of a programmed characteristic Valve stroke Unit signal 10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 0 4 20 mA...

Page 60: ...void maladjustment of the controller due to an incorrect compressed air supply or applied operating medium pressure Run X TUNE whenever the compressed air supply pneumatic auxiliary energy is availabl...

Page 61: ...ugh the entire stroke range Stroke limit X LIMIT Limit the mechanical stroke range Limit actuating time X TIME Limit the control speed Control parameters X CONTROL Parameterize the position controller...

Page 62: ...irection between the aeration state of the actuator and the actual position Factory setting Off rise Rise Direct effective direction deaerated 0 aerated 100 Case Inverse effective direction deaerated...

Page 63: ...range 25 100 Use this function to limit the position set point value range of the positioner by specifying a minimum and a maximum value This makes it possible to divide a unit signal range that is us...

Page 64: ...ing Lower position limit 0 upper position limit 100 Adjustment ranges Stroke limit minimum 0 50 of the entire stroke Stroke limit maximum 50 100 of the entire stroke The minimum distance between the u...

Page 65: ...setting values determined at the factory by the X TUNE function If the control speed will be limited values can be input for Open and Close which are between the minimum values determined by the X TU...

Page 66: ...depending on the friction behavior of the actuator The value determined in this way is an approximate value You can re adjust it manually Position set point value Control difference Xd1 Position actu...

Page 67: ...AFEPOS If a fault is detected the actuator moves to the position set under safe position function Inactive safe position function SAFEPOS If a fault is detected the actuator moves to the end position...

Page 68: ...nter Function Position POS Output of the current position Set point value CMD Output of the set point value Standard signal 4 20 mA Selection of the standard signal 0 20 mA 14 2 10 Setting the LED mod...

Page 69: ...afety end positions after failure of the auxiliary power electrical pneumatic up down single acting control function A down not defined up down single acting control function B up not defined Table 32...

Page 70: ...equipment WARNING Risk of injury from improper disassembly Disassembly may be carried out by authorized technicians only and with the appropriate tools Risk of injury from unintentional activation of...

Page 71: ...rve applicable accident prevention and safety regulations for electrical equipment Loosen the circular plug in connector 3 Mechanical connection Loosen the fastening screws Remove the positioner upwar...

Page 72: ...nsion M12 pin to M12 socket length 1 m 772404 b S cable extension M12 pin to M12 socket length 3 m 772405 b S cable extension M12 pin to M12 socket length 5 m 772406 b S cable extension M12 pin to M12...

Page 73: ...storage temperature ATTENTION Incorrect storage may damage the device Store the device in a dry and dust free location Storage temperature 20 to 65 C ATTENTION Damage to the environment caused by dev...

Page 74: ...74 english Type 8696 REV 2...

Page 75: ...www burkert com...

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