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Operating Instructions
Frequency converters
VAU 4/4
VAU(w) 7.5/3
VAU 11-22/3
www.becker-international.com

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Summary of Contents for Becker VariAir VAU 4/4

  • Page 1 Operating Instructions Frequency converters VAU 4/4 VAU(w) 7.5/3 VAU 11-22/3 www.becker-international.com...
  • Page 2: Table Of Contents

    3.3.1.2 Mechanical connection of the water cooling of the VAUw 7.5/3 ..........23 3.3.1.3 Mechanical installation of the VAU 11-22/3 .................24 3.3.2 Connection space ........................25 3.3.3 Power connection ........................26 3.3.3.1 Power connection of the VAU 4/4 & VAU(w) 7.5/3 ..............26 www.becker-international.com...
  • Page 3 Information for correct disposal ....................57 Technical data ......................58 General data ..........................58 Derating of the output power ....................60 8.2.1 Derating due to increased ambient temperature .................60 8.2.2 Derating due to installation altitude .....................61 8.2.3 Derating due to cycle frequency ....................61 www.becker-international.com...
  • Page 4: General Information

    These instructions form part of the product and apply exclusively to the VAU series (VARIAIR UNIT) of Gebrüder BECKER GmbH. Make sure to hand these instructions to the plant operator to be readily available when required.
  • Page 5: Signal Words

    IMPORTANT INFORMATION The frequency converter may only be assembled, operated, maintained or installed by trained and qualified personnel. Fig. 2: Example of an information notice Markings at the frequency converter Fig. 3: Markings at the frequency converter www.becker-international.com...
  • Page 6: Qualified Personnel

     Repairs may only be carried out by authorised repair centres. Independent and unauthorised interventions may result in death, injury or property damage. This invalidates the warranty by Ge- brüder BECKER GmbH.  External mechanical loads, such as stepping onto the housing, are not permitted!
  • Page 7: Ce Marking

    They contain important information on the installation and operation of the frequency converter. In particular, note the information under "Important information". Gebrüder BECKER GmbH assumes no liability for damages arising from the non-compliance with these operating instructions.
  • Page 8: Transport And Storage

    The following terminals may still carry dangerous currents even when the motor is not running: - Supply terminals X1: L1, L2, L3 - Motor connection terminals X2: U, V, W - Connection terminals X6, X7: Relay contacts for relays 1 and 2 - PTC/bimetallic switch connection terminals T1/ T2 www.becker-international.com...
  • Page 9 This information must always be complied with, even for frequency converters bearing the CE mark. The compliance with the limits required by EMC legislation is the responsibility of the plant or machine manufacturer. www.becker-international.com...
  • Page 10: Notes For Operation

     For VAU 11-22/3 a pause of at least 1 to 2 min. must be observed between successive mains activations.  Certain parameter settings may result in the frequency converter restarting automatically after a supply voltage failure. www.becker-international.com...
  • Page 11: Maintenance And Inspection

    1.7.5 Maintenance and inspection Frequency converters may only be maintained and inspected by trained electricians. Unless explicitly stated in these instructions, modifications of hardware and software may only be carried out by persons authorised by Gebrüder BECKER GmbH. 1.7.5.1 Cleaning of frequency converters Frequency converters are maintenance-free if operated as intended.
  • Page 12: Pressure Test In A Vau

    If this information is not observed, the frequency converter could be damaged and destroyed during subsequent commissioning!  Repairs of the frequency converter may only be carried out by the Service department of Ge- brüder BECKER GmbH. DANGER Mortal danger from to electric shock! Death or serious injury! Disconnect the frequency converter from the voltage supply and protect it against re-activation.
  • Page 13: Frequency Converter Overview

    Fig. 5: Scope of delivery Frequency converter (version) Adapter plate with connection terminal (optional) Poly bag containing fastening bolts Poly bag containing connection material for terminal block (optional) Cable glands Seal (optional) Operating instructions Motor (not included in the scope of delivery) www.becker-international.com...
  • Page 14: Description Of Frequency Converter Vau

    Immune to interference according to DIN EN 61800-3 Cooling: Surface cooling: VAU 4/4 & VAU 7.5/3: free convection; VAU 7.5/3: optionally with integrated fan; VAU 11-22/3: with integrated fans. Water cooling: VAUw 7.5/3: with integrated water cooler Table 1: Ambient conditions www.becker-international.com...
  • Page 15: Connection Versions Vau 4/4 & Vau(W) 7.5/3

    Fig. 6: Star or delta circuit for frequency converter integrated in the motor DANGER Mortal danger from to electric shock! Death or serious injury! Disconnect the frequency converter from the voltage supply and protect it against re-activation. Unused open cable ends in the motor terminal box must be insulated. www.becker-international.com...
  • Page 16 Connection version with 3 conductors (star/delta circuit already established in the motor) Triangle connection variant Star connection variant Nut MA = 5Nm Plain washer Circlip Cable lug / wire end sleeve www.becker-international.com...
  • Page 17: Connection Version Vau 11-22/3

    Remove the bridging contact inserted for delivery purposes. The cross section of the supply line must be designed according to the installation type and maximum permitted current. The contractor commissioning the device must ensure protection for the power line. www.becker-international.com...
  • Page 18: Short Circuit And Earth Leakage Protection

    0.75 to 1.5 mm², fine-wired, AWG 18 to AWG 14 tion: Connection cross sec- 0.5 to 1.0 mm², fine-wired tion: (wire end sleeves with and without plastic collars) Length of stripped in- 9 to 10 mm sulation: Table 2: Connection X5-X7 www.becker-international.com...
  • Page 19 0.25 mm² tion, flexible with TWINAEH with max. 1.5 mm² plastic collar Conductor cross section AWG/kcmil min. 24 max. 8 Length of stripped insulation: 15 mm Mounting temperature: -5°C to +100°C Table 3: Connection X1 (VAU 4/4 & VAU(w) 7.5/3) www.becker-international.com...
  • Page 20 2 conductors of identical cross section, min. 0.5 mm² flexible with TWINAEH with plastic collar max. 6 mm² Length of stripped insulation: 18 mm AWG according to UL/CUL min. 20 max. 2 Table 4: Connection X1 and X 4 (VAU 11-22/3) www.becker-international.com...
  • Page 21: Avoidance Of Electromagnetic Interferences

    Installation of a frequency converter integrated into the motor 3.3.1 Mechanical installation 3.3.1.1 Mechanical installation of the VAU 4/4 & VAU(w) 7.5/3 Fig. 10: Assembly sequence: Terminal box – adapter plate (VAU 4/4 & VAU 7.5/3) Adapter plate Seal Drill holes Fastening bolts www.becker-international.com...
  • Page 22 When the bridge is in place, the motor temperature will not be monitored! 5. Plug the frequency converter (3) onto the adapter plate (4) and fasten it evenly using the four lateral bolts (5) (VAU 4/4 & VAU 7.5/3) (torque: 4.0 Nm). www.becker-international.com...
  • Page 23: Mechanical Connection Of The Water Cooling Of The Vauw 7.5/3

    Risk of damage to the aluminium cooler! Risk of damage from incorrect coolant (e.g. tap water)! Only use coolants meeting the guidelines of WN472 by Gebrüder BECKER GmbH. We recommend a mixture of 65% deionised water and 35% Glysantin G48 (anti-freeze agent).
  • Page 24: Mechanical Installation Of The Vau 11-22/3

    Correct sealing between the adapter plate and motor is of vital importance to comply with the protection class. This is the sole responsibility of the commissioning contractor. Please direct any queries to your usual contacts for Gebrüder BECKER GmbH. www.becker-international.com...
  • Page 25: Connection Space

    Mains cable connection L1, L2, L3, PE Brake module connection Relay Rel.2: Collective fault message (standard) Rel.1: Collective operating message (standard) Control terminal RS485-interface EMC - cable gland (2) Connection socket for: - PC (KombiTool) - manual control unit (MMI) www.becker-international.com...
  • Page 26: Power Connection

    4. Connect the cables to the terminals as follows: Terminals Connection L1, L2, L3 Mains supply phase L1, L2, L3 Mains supply protective conductor PE IMPORTANT INFORMATION When connecting a brake resistance to an optional brake module, cables with shielding and double insulation must be used! www.becker-international.com...
  • Page 27: Power Connection Of The Vau 11-22/3

    Motor phase 2 Motor phase 3 Table 6: Motor connection assignment X4 3.3.4 Brake resistance connections (VAU 4.4 & VAU(w) 7.5/3 only) Terminal no. Designation Assignment Connection for brake resistance Connection for brake resistance Table 7: Connection assignment for brake resistance www.becker-international.com...
  • Page 28: Control Connections

    1 (0mA...20mA) RS 485 A(+) Serial RS485 interface cable A RS 485 B(-) Serial RS485 interface cable B Analogue In 2 analogue input 2 Analogue In 1 analogue input 1 Table 10: Connection assignment for control connections (upper row) www.becker-international.com...
  • Page 29: Relays

    The interface is networkable in accordance with the above-mentioned standard in a network of up to 31 nodes. The transmission rate and node address can be configured via corresponding parameters. Connector assignment Description M12: RS 485 A(+) RS 485 B(-) Stift (Bus-In) Table 12: Connector assignment M12 www.becker-international.com...
  • Page 30: Local Operation And Display

    The optionally available manual control unit MMI (order no.: 79630100115) is a diagnosis and service tool and used for the communication with the frequency converter. It provides e.g. the following functions: Display/change of various parameters, error display (last 20) with error number and description, control (setpoint specification), saving, deleting and transferring parameter records. www.becker-international.com...
  • Page 31: Installation Of A Wall-Mounted Frequency Converter

    2. Use suitable EMC glands to connect the shielded motor cable to the motor connection box! Ensure that the shielding has sound (large area) contact! 3. Connect the prescribed PE connection in the motor connection box! 4. Close the motor connection box. www.becker-international.com...
  • Page 32  To achieve optimum self-convection of the frequency converter, ensure that the (EMC) gland (1) points upwards during installation.  If there is no additional ventilation for the VAU (optional for size VAU 7.5/3), only vertical installation is permitted. Fig. 19: Wiring www.becker-international.com...
  • Page 33 The motor PTC/bimetallic switch carries potential after connecting the VAU. It must therefore be connected using a separate cable insulated against the motor cable. To this end replace the dummy gland (8) with a suitable standard gland and route both ends to T1 and T2 (6). www.becker-international.com...
  • Page 34: Power Connection

    3.6.3 Power connection The power connections are made as described in chapter 3.3. 3.6.4 Brake chopper The brake connections are made as described in chapter 3.3. 3.6.5 Control connections The control connections are made as described in chapter 3.3. www.becker-international.com...
  • Page 35: Commissioning

    To this end the frequency converter features a 24 V small voltage input (terminal X5: 24 V IN & Ground IN) to supply the electronics without mains voltage needing to be connected. The converter indicates an error based on the missing mains voltage. www.becker-international.com...
  • Page 36: Kombitool

    4.2.1 KombiTool The KombiTool is the parametrisation and diagnosis software for the frequency converters approved by Gebrüder BECKER GmbH. The communication between the computer and the frequency converter must take place via a suitable interface converter. The KombiTool is not included in the scope of delivery but can be ordered if required.
  • Page 37: Sensorless Control (Internal Control)

    The release of the equipment for starting the ramp-up and for shut-down can also be issued in different ways (e.g. digital input or RS485 interface). Which way will be used is determined by the parameter of the start/stop origin. Unless specified differently by the user, digital input 1 is configured as start/stop origin. www.becker-international.com...
  • Page 38: Block Diagram

    Field bus Fixed Autostart frequencies Fixed frequency RS 485 Internal potentiometer Virtual output Boundary of the family of Min / max Motor current limit Ramps characteristics frequency Speed Motor control Setpoint Fig. 22: General structure of target value generation www.becker-international.com...
  • Page 39: Parametrisation

    003/ 048 2 Braking time (brake ramp 1 / brake ramp 2) 0.1...1000 s Time period from f (see P001) to stoppage 004/ 049 2 Ramp-up time (acceleration ramp 1 / acceleration ramp 2) 0.1...1000 s Time period from stoppage to f (see P001) www.becker-international.com...
  • Page 40 13 = MMI 14 = virtual output 2 Operating mode 0...5 Selection of the operating mode 0 = speed-controlled operation 1 = sensor-guided PID controller 2 = fixed frequency 3 = sensorless (internal) pressure control 5 = PLC (internal) www.becker-international.com...
  • Page 41 Proportional amplification of the PID controller 2 PID controller (KI: I share) 0...100 1/s Amplification factor of the integral share of the PID controller 2 PID controller (KD: D share) 0...100 s Amplification factor of the differential share of the PID controller www.becker-international.com...
  • Page 42 0 signal corresponds to brake ramp 1 and acceleration ramp 1 1 signal corresponds to brake ramp 2 and acceleration ramp 2 3 MOP step range  P141 0...100 % Step range of the motor potentiometer as percentage related to f (MAX frequency). www.becker-international.com...
  • Page 43 063/ 066 2 Activation threshold (relay 1 / relay 2) 0...10000 Activation threshold related to the selected process variable for relay function 1, 2, 3, 4, 5, 8, 9, 53 (value specified in physical units: A, V, Hz, °C) www.becker-international.com...
  • Page 44 7 = analogue input 1 8 = analogue input 2 2 PID inverted 0; 1 Inverts the actual value of the PID process controller: (important for absolute pressure sensor in vacuum range) 0 = not inverted 1 = PID ACTUAL value is inverted www.becker-international.com...
  • Page 45 1 = 19200, 0 = 1MBit, 2 = 38400, 1 = 800kBit, 3 = 57600, 2 = 500kBit, 4 = 115200; 3 = 250kBit, 4 = 125kBit, 5 = 100kBit, 6 = 50kBit, 7 = 20kBit, 8 = 10kBit www.becker-international.com...
  • Page 46 Frequency converter enters fault / fault indication 0 = from PLC (internal) 1 = fault via digital input 1 2 = fault via digital input 2 3 = fault via digital input 3 5 = fault via virtual digital output 1 www.becker-international.com...
  • Page 47  if the motor potentiometer setpoint was not changed for 2 seconds and differs from the setpoint saved last, this value is saved! 2 PID maximum setpoint 0...100 % PID setpoint limit [100]  The PID setpoint from the setpoing origin is limited to this setpoint. www.becker-international.com...
  • Page 48 Only written by BECKER to define the converter in the KombiTool [101] 2 Hardware status 0...10000 Only written by BECKER to define the parameter record in the KombiTool 2 Software status 0...10000 Only written by BECKER to define the parameter record in the KombiTool 0 Parameter record ID 0...10000...
  • Page 49 166/ 172 2 Limit value analogue input 2: Deactivation threshold (relay 1 / relay 2) 0...10000 Deactivation threshold related to the selected process variable (specify value in physical units : mA, V (0…20mA / 0…10V)) see parameters 62 / 65 relay function: 54 www.becker-international.com...
  • Page 50 (potentiometer full right deflection) in the operating mode sensorless control or with maxi- mbar mum control voltage. 180/ 181 2 Pressure/temperature characteristic (K0 / K1 / K2) -1000... Temperature limit 1000 W/Hz 183/ 184 2 Vacuum/temperature characteristic (K0 / K1 / K2) -1000... Temperature limit 1000 W/Hz www.becker-international.com...
  • Page 51 A, V, Hz, °C) 10000 2 Maximum value (virtual output) -10000... Deactivation threshold of the virtual output related to the selected process variable (specify value in physical units: A, V, Hz, °C) 10000 2 Activation delay (virtual output) 0...99 s www.becker-international.com...
  • Page 52: Diagnostic Parameters

    Error group 2 1012 Chapter 6.2 1013 Error group 3 Chapter 6.2 1014 Error group 4 Chapter 6.2 1015 Digital IN all Status of all digital inputs 1016 Analogue IN1 Analogue input 1 1017 Analogue IN2 Analogue input 2 www.becker-international.com...
  • Page 53: Error Detection And Removal

    Error messages can be acknowledged as follows:  digital input (programmable)  via the KombiTool (P1011...1014)  via the MMI (manual control unit)  automatic acknowledgement  switch equipment off and back on  via field bus (CANOpen, Profibus DP, EtherCAT) www.becker-international.com...
  • Page 54: Table Of Possible Error Messages

    2048 Ground leak Ground leak during a motor Insulation fault phase 8192 Motor connec- No motor current in spite of No motor connected or motor tion disrupted control through FC not connected correctly. Key: LED flashes, LED flashes rapidly www.becker-international.com...
  • Page 55 Internal 24V supply is NOK plication is greater than 31V or external supply is not NOK 1024 System error No voltage is present at the Operation with 24 V without consumer mains supply Key: LED flashes, LED flashes rapidly www.becker-international.com...
  • Page 56 Error E r r o r n o . group KombiTool MMI Name Description Cause System error Contact BECKER for this fault System error Contact BECKER for this fault System error Contact BECKER for this fault System error Contact BECKER for this...
  • Page 57: Disassembly And Disposal

    Information for correct disposal Dispose of frequency converter, packaging and replaced parts in accordance with the regulations of the country in which the frequency converter has been installed. The frequency converter may not be disposed of with household waste. www.becker-international.com...
  • Page 58: Technical Data

    Table 14: Technical data (subject to technical modifications) supply reduction of approx. 50 % possible (reduced output power) For the exact information on the pre-fuse for individual devices, please refer to the device data sheet or the operating instructions of the device. www.becker-international.com...
  • Page 59 External supply of 24 V possible Voltage supply 10 V Auxiliary voltage U = 10 V DC Short-circuit proof = 30 mA Table 15: Interface specification The frequency converters include the option of connecting motor temperature monitoring (PTC/bimetallic switch). www.becker-international.com...
  • Page 60: Derating Of The Output Power

    8.2.1 Derating due to increased ambient temperature Fig. 23: Derating for frequency converter mounted on motor (all sizes) Fig. 24: Derating for wall-mounted frequency converters (VAU 4/4 & VAU 7.5/3) Fig. 25: Derating for wall-mounted frequency converters (VAU 7.5/3 with fan option and VAU 11-22/3) www.becker-international.com...
  • Page 61: Derating Due To Installation Altitude

    In order to observe the overvoltage category:  use an external overvoltage protection in the supply cable of the VAU.  reduce the input voltage. Contact the Service department of Gebrüder BECKER GmbH. The respective max. output values can be determined from the following characteristic curves.
  • Page 62: Approvals, Standards And Directives

    Industrial environments with their own supply network separated from the public low-voltage supply by a transformer. Standards and directives The following specifically apply:  Directive on Electromagnetic Compatibility (Directive 2004/108/EC of the Council EN 61800-3:2004).  Low Voltage Directive (Directive 2006/95/EC of the Council EN 61800-5-1:2003) www.becker-international.com...
  • Page 63: Ul Approval

    All wiring terminals marked to indicate proper connections for the power supply, load and control circuitry. The tightening, torque to connect the motor terminals, is 26.55 lB/in (size A to C) and 5.31 lb/in to connect the PTC (in all sizes). www.becker-international.com...
  • Page 64 Integral solid state short circuit protection does not provide branch circuit protection. Branch circuit protec- tion must be provided in accordance with the Manufacturer Instructions, National Electrical Code and any additional local codes. All wiring terminals marked to indicate proper connections for the power supply, load and control circuitry. www.becker-international.com...
  • Page 65: Homologation Cl (Version En Française )

    Le variateur VAU INV MC 4 avec le suffixe S10 est exclusivement conçu pour une utilisation en environ- nement de degré de pollution 2. La protection interne contre les surcharges se met en marche en l‘espace de 60 secondes une fois 150 % du courant nominal du moteur atteints. www.becker-international.com...
  • Page 66 2. Le test de température a été effectué avec un entraînement installé sur un dissipateur en alumi- nium, dimensions hors tout et forme d‘ailettes comme indiqué ci-dessous. www.becker-international.com...
  • Page 67 INSTALLÉE CÔTÉ LIGNE DE CET ÉQUIPEMENT ET AVOIR UNE VALEUR NOMINALE DE 277 V (PHA- SE-TERRE), 480 V (PHASE-PHASE), EN COMPATIBILITÉ AVEC LA CATÉGORIE DE SURTENSION III, ET DOIT OFFRIR UNE PROTECTION CONTRE UN PIC DE TENSION ASSIGNÉE DE TENUE AUX CHOCS DE 2,5 kV www.becker-international.com...
  • Page 68: Information For Maintenance And Service

    For repairs please contact your responsible national agency. SERVICE www.becker-international.com Sales and service network If a frequency converter is sent for repair, no warranty will be given for any add-on components, such as mains cables, potentiometer, external displays etc.!

This manual is also suitable for:

Variair vau seriesVariair vau 7.5/3Variair vau 11/22.3

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