Vacon 20 X Installation, Technical And Maintenance Manual
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Vacon 20 X Installation, Technical And Maintenance Manual

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  • Page 1 20 x ® ac drives installation, Technical and Maintenance manual...

  • Page 3: Table Of Contents

    Fieldbus connection ......................48 5.4.1 Modbus RTU protocol....................... 49 5.4.2 Preparation for use through RS485................. 50 Commissioning ....................52 Commissioning of the drive ..................... 53 Changing EMC protection class..................54 Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 4 7.1.2 Mains voltage 3AC 380-480V.................... 61 7.1.3 Definitions of overloadability ................... 61 Brake resistor ratings...................... 62 VACON® 20 X - technical data..................63 7.3.1 Technical information on control connections ..............66 Options ......................68 Vacon keypad with seven-segment display ..............68 8.1.1 Mounting onto the drive ....................

  • Page 5: Safety

    Please read the warning information carefully. ® VACON 20 X is a drive designed to control asynchronous AC motors and permanent magnet motors. The product is intended to be installed in a restricted access location and for a gen- eral purpose use.

  • Page 6: Danger

    (if no keypad is attached, see the indicators on the cover). Wait an ® additional 30 seconds before starting any work on the connections of VACON X Drive. After expiration of this time, use measuring equipment to absolutely ensure that no voltage is present.

  • Page 7: Warnings

    Only DVC A circuits (Decisive Voltage Class A, according to IEC 61800-5-1) are allowed to be connected to the control unit. This advice aims to protect both the drive and the client-application. Vacon is not responsible for direct or consequen- tial damages resulting from unsafe connections of external circuits to the drive.

  • Page 8: Earthing And Earth Fault Protection

    CAUTION! ® The VACON 20 X AC drive must always be earthed with an earthing conductor connected to the earthing terminal marked with Since the touch current exceeds 3.5 mA AC, according to EN61800-5-1, the drive shall have a fixed connection and provision of an additional terminal for a second protective earthing con- ductor of the same cross-sectional area as the original protective earthing conductor.
  • Page 9 ® In VACON 20 X, the phase conductor and the corresponding protective earthing conductor can be of the same cross-sectional area, provided they are made of the same metal (because the cross-sectional area of the phase conductor is less than 16 mm...

  • Page 10: Insulation System

    IEC 61800-5-1) and the GND terminals are referred to PE. This is important when you need to connect other circuits to the drive and test the complete assembly. Should you have any doubts or questions, please contact your local Vacon distribu- tor.

  • Page 11: Compatibility With Rcds

    (RCD) or monitoring (RCM) device is used for protection in case of direct or indirect contact, only an RCD or RCM of Type B is allowed on the supply side of this product. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 12: Extended Temperature Range

    ® VACON 20 X has an integrated cooling system, independent from the motor fan. Under max- imum operating conditions, the ambient temperature cannot exceed 40 °C. See Table 24 for the output rated current. Higher temperatures are allowed only with derating of the output current.

  • Page 13: Declaration Of Conformity

    Safety vacon • 10 Declaration of conformity Figure 4. Declaration of conformity. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 14 • 11 Safety Figure 5. STO certificate.
  • Page 15 REMARQUE Vous pouvez télécharger les versions anglaise et française des manuels produit contenant l’ensemble des informations de sécurité, avertissements et mises en garde appli- cables sur le site www.vacon.com/downloads. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 16 • 13 Safety...

  • Page 17: Receipt Of Delivery

    Protection: IP class IP66/ 4X EMC level EMC level: Application code Firmware: FW0065V008 Application: Cust. Ord. No: 3234500378 Marks: Customer’s order number CUSTOMER NAME Figure 6. Vacon package label. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 18: Type Designation Code

    +xxxx +yyyy This segment is common for all products. Additional codes. 0020 Examples of additional codes: Product range: +HMTX 0020 = Vacon 20 Text keypad IP66 +QDSS Input/Function: Integrated disconnect switch = Three-phase input 0009 Drive rating in ampere; e.g. 0009 = 9 A...

  • Page 19: Unpacking And Lifting The Ac Drive

    ® VACON 20 X drives have undergone scrupulous tests and quality checks at the factory before they are delivered to the customer. However, after unpacking the product, check that no signs of transport damage are to be found on the product and that the delivery is complete.

  • Page 20: Product Modified' Sticker

    • 17 Receipt of delivery 2.3.1 ‘Product modified’ sticker Product modified In the small plastic bag included in the delivery, you will find a silver sticker. The purpose of the sticker is to notify the service staff about the modifications made in the AC drive.

  • Page 21: Mounting

    169.2 x 294.7 x153.8 6.66 x 11.60 x 6.06 MU2 +HMTX 169.2 x 294.7 x175.7 6.66 x 11.60 x 6.92 MU2 +QDSS 169.2 x 294.7 x176 6.66 x 11.60 x 6.93 Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 22 • 19 Mounting ® Figure 10. 20 X, MU3. VACON Dimensions W x H x D Frame [mm] [in] 205.2 x 375.2 x 180.5 8.08 x 14.77 x 7.11 MU3 +HMTX 205.2 x 375.2 x 202.1 8.08 x 14.77 x 7.96 MU3 +QDSS 205.2 x 375.2 x 200.0...

  • Page 23: Cooling

    Figure 12.. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 24 • 21 Mounting Figure 12. Installation space when drives are mounted on top of each other.

  • Page 25: Power Cabling

    Use cables with heat resistance in accordance with the application requirements. The cables and the fuses must be dimensioned according to the AC drive nominal OUTPUT current which you can find on the rating plate. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 26 • 23 Power cabling EMC levels environment environment Cable type Category C2 Category C3 Category C4 Mains cable Motor cable Control cable Table 8: Cable types required to meet standards. 1 = Power cable intended for fixed installation and the specific mains voltage. Shielded cable not required.

  • Page 27: Circuit Breaker

    Integral solid state short circuit protection does not provide branch circuit pro- tection. Branch circuit protection must be provided in accordance with the National Electrical Code and any additional local codes. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 28: Description Of The Terminals

    • 25 Power cabling Description of the terminals ® The following pictures describe the power terminals and the typical connections in Vacon drives. AC power supply Single or Three phases Motor Figure 15. Power connections, MU2.
  • Page 29 These terminals are the input connections for the power supply. Single-phase 230 VAC models connect to L1 and L2 terminals. U/T1 V/T2 These terminals are for motor connections. W/T3 Table 9. Description of Vacon 20X power terminals. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 30: Cable Dimensioning And Selection

    Check that the fuse operating time is less than 0.4 seconds. Operating time depends on used fuse type and impedance of the supply circuit. Consult the factory about faster fuses. Vacon also recommends for high speed J (UL & CSA), aR (UL recognized, IEC 60269-4) and gS (IEC 60269-4) fuse ranges.
  • Page 31 Check that the fuse operating time is less than 0.4 seconds. Operating time depends on used fuse type and impedance of the supply circuit. Consult the factory about faster fuses. Vacon also recommends for high speed J (UL & CSA), aR (UL recognized, IEC 60269-4) and gS (IEC 60269-4) fuse ranges.

  • Page 32: Brake Resistor Cables

    ® VACON 20 X AC drives are equipped with terminals for an optional external brake resistor. For MU2, brake resistor wires with faston 6.3 mm have to be used. For MU3, a PCB terminal block with push-in spring-cage connector is provided. Stranded wires (max.

  • Page 33: Cable Installation

    Strip the motor and mains cables as recommended below. Earth conductor Earth conductor Shield MAINS MOTOR Figure 17. Stripping of cables. Frame Leave as short as possible Table 12. Cables stripping lengths [mm]. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 34 • 31 Power cabling • Remove the plastic cover of the drive as shown in Figure 18. Figure 18. MU2 example: open cover. IEC installations: • The cable entries consists of several openings available for the cables with ISO metric thread.
  • Page 35 Figure 20. Cable entries, MU3. • Cable glands must be made of plastic materials. They are used for sealing cables passing through cable entries to ensure the characteristics of the enclosure. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 36 • 33 Power cabling Figure 21. Cable gland. Plastic cable glands are recommended. If metal cable glands are needed, all insulation system and protective earthing requirements have to be fulfilled in accordance with the national electrical regulations and IEC 61800-5-1.
  • Page 37 Table 14. Tightening torque of NPT adapters to metric threads cable entries. The Vacon 20X drive is IP66/Type 4X rated. To keep this rating, the use of a sealed con- duit is required: if the approved conduit is not used, all warranty claims against water will be void.
  • Page 38 • 35 Power cabling Cables installation: • Pass the cables (supply cable, motor cable, brake cable and I/O cables) through the pipes and adapters (UL installations) or through the cable glands (IEC installations) and cable entries. • Detach the cable clamps and the grounding clamps.

  • Page 39: Wiring Way

    • 36 Wiring way In the following picture an example of wire cabling is given: Input Line Motor output I/O terminals STO terminals Option board terminals Relays Figure 23. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 40 • 37 Power cabling...

  • Page 41: Control Unit

    • 38 ONTROL UNIT Opening the drives Figure 24. Open front cover of the drive: control unit MU2. Figure 25. Open front cover of the drive: control unit MU3. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 42: Control Units Mu2 And Mu3

    • 39 Control unit Control units MU2 and MU3 The control unit of the AC drive consists of the control board and additional boards (option boards) connected to the slot connectors of the control board. The locations of boards, termi- nals and switches are presented in Figure 26 and Figure 27.
  • Page 43 Note however that the values of the measurements of the main circuit (e.g. DC-link voltage, unit temperature) are not available when the mains is not connected. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 44: Control Unit Cabling

    • 41 Control unit Control unit cabling The principal terminal block placement is shown in Figure 28 below. The control board is equipped with 18 fixed control I/O terminals and the relay board with 5. Additionally, the termi- nals for the Safe Torque Off (STO) function (see chapter 9) can be seen in the picture below. All signal descriptions are also given in Table 18.

  • Page 45: Standard I/O Terminals

    Remote reference 4...20mA/0...10V I/O signal ground Digital output 1 com- DO1- Digital input 4 Digital input 5 Digital input 6 Analogue signal AO1+ (+output) DO1+ Digital output 1 Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 46: Relay Terminals

    • 43 Control unit 5.3.3 Relay terminals Table 19. I/O terminal signals for relays and connection example. Relays terminals Terminal Signal From Relay output 1 RO1/2 standard I/O board From term. From term. RO1/3 Relay output 2 RO2/1 RO2/2 RO2/3 5.3.4...

  • Page 47: Description Of Additional Echo Connectors

    It mates with Pico-Clasp™ Wire-to Board Receptacle Housing (crimp housing), Dual Row, 20 ® Circuits. The code by Molex is: 501189-2010. See Figure 30. Figure 30.Receptacle housing for I/O remote echo connector. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 48 Control unit To connect I/Os to the control unit through echo terminals this connector has to be used. In the ® following table, the correspondence between the pins of this connector and the VACON 20 X terminals is shown. Pin number...

  • Page 49: Led Handling

    Led handling ® As VACON 20 X is often without the keypad, on the plastic cover of the drive there are 4 status LEDs. See the picture below. Figure 31. LED position on the MU2 cover. Led “PWR” (orange led) means the drive is supplied by mains.

  • Page 50: Selection Of Terminal Functions With Dip Switches

    “0” means that termination resistance is connected and the termination of the bus has been set. If the Vacon 20 X is the last device on the net, this switch must be set to “0” position. The default position for SW4 is “0”.

  • Page 51: Fieldbus Connection

    The address in the message header is used to define which device should respond to a message. All other nodes on the Modbus network ignore the message if the address field doesn't match their own address. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 52: Modbus Rtu Protocol

    Table 22. ® VACON 20 X drive is equipped with Modbus support as standard. The AC drive can be connect- ed to fieldbus through RS485. The connection for RS485 is on the standard I/O (terminals A and B). See Figure 34.

  • Page 53: Preparation For Use Through Rs485

    RS485 cable to the frame of the AC drive. ® If VACON 20 X drive is the last device on the bus, the bus termination must be set. Locate the switches to the right of the control terminals (see Figure 32) and turn the SW4 switch to position “0”.
  • Page 54 • 51 Control unit...

  • Page 55: Commissioning

    The motor terminals U, V, W and the brake resistor terminals are live when ® VACON 20 X drive is connected to the mains, even if the motor is not running. The control I/O-terminals are isolated from the mains potential. However, the relay outputs may have a dangerous control voltage present even when ®...

  • Page 56: Commissioning Of The Drive

    • 53 Commissioning Commissioning of the drive Read carefully the safety instructions in Chapter 1 and above and follow them. After the installation: Check that both the frequency converter and the motor are grounded. Check that the mains and motor cables comply with the requirements given in chapter 4.1.1.

  • Page 57: Changing Emc Protection Class

    Changing EMC protection class ® The EMC protection class of Vacon 20 X can be changed from class C2 to class C4 (T). This is done as described below: Warning! Do not perform any modifications on the AC drive when it is connected to mains.
  • Page 58 • 55 Commissioning Remove the EMC plate from the control unit. Then lift the plate with pliers to dis- connect the EMC plate from the ground. See Figure 36. Then reconnect the EMC plate to the unit. Figure 36. Changing of the EMC class in MU2 control unit.

  • Page 59: Changing Emc Protection Class - Mu3

    NOTE! After having performed the change write on the ® sticker included in the VACON 20 X delivery (see below) and note the date. Un- less already done, attach the sticker close to the name plate of the AC drive. Product modified Date: Date: EMC-level modified C1->C4...

  • Page 60: Running The Motor

    • 57 Commissioning Running the motor MOTOR RUN CHECK LIST Before starting the motor, check that the motor is mounted properly and ensure that the machine connected to the motor allows the motor to be started. Set the maximum motor speed (frequency) according to the motor and the machine connected to it.

  • Page 61: Maintenance

    6...10 years • Change main fan • Charge capacitors, only after long storage times or long down times 12...24 months without supply: contact your nearest Vacon service center. Table 23. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 62 • 59 Commissioning...

  • Page 63: Technical Data

    20 X, supply voltage 208-240V. VACON NOTE: The rated currents in given ambient temperatures (in Table 24) are achieved only when the switching frequency is equal to or less than the factory default. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 64: Mains Voltage 3Ac 380-480V

    10.0 ® Table 25. Power ratings of 20 X, supply voltage 380-480V. VACON NOTE: The rated currents in given ambient temperatures (in Table 25) are achieved only when the switching frequency is equal to or less than the factory default.

  • Page 65: Brake Resistor Ratings

    Make sure that the resistance is higher than the minimum resistance defined. The power han- dling capacity must be sufficient for the application. Recommended minimum brake resistor values for Vacon 20 X AC drives: Mains Voltage 3AC 208-240 V, 50/60 Hz...

  • Page 66: Vacon® 20 X - Technical Data

    • 63 Technical data ® VACON 20 X - technical data 3AC 208…240V Input voltage U 3AC 380...480V Input voltage tolerance -15%…+10% continuously Input frequency 50/60 Hz Input frequency tolerance 45…66 Hz Protection class Mains connection Connection to mains...
  • Page 67 TÜV (SÜD) - Tested Approvals TÜV - Tested USA, Canada cULus approval, file number E171278 Korea KC mark Declaration of Australia C-tick Declaration of Conformity Conformity Europe EC Declaration of Conformity Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 68 Motor overload protection protection at 105% of full load amperes. Motor stall protection Motor underload protec- tion Short-circuit protection of +24V and +10V reference voltages Thermal motor protection Yes (by PTC with option card) Table 28. Vacon 20 X technical data.

  • Page 69: Technical Information On Control Connections

    Analogue signal 0-10V (30mA max) (+output) Resolution 0.1%, accuracy ±2,5 % Short-circuited protected. Digital Output 1 Open Collector max 35V / 50mA (DO1+) Table 29. Technical information on standard I/O terminals. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 70 • 67 Technical data Relays Terminal Signal Technical information Switching capacity 250VAC/3A Relay output 1 (only earthed network allowed) Switching capacity NO 250VAC/5A Relay output 2* NC 250VAC/3A (only earthed network allowed) If 230VAC is used as control voltage from the output relays, the control circuitry must be powered with a separate isolation transformer to limit short circuit current and overvoltage spikes.

  • Page 71: Options

    • 68 PTIONS Vacon keypad with seven-segment display ® The text keypad is an option available for VACON 20 X. The control keypad is the interface between ® the VACON 20 X frequency converter and the user. Figure 39. Text keypad.
  • Page 72 • 69 Options Figure 41. Disconnection of the HMI cap from the drive. Figure 42. Mounting of the keypad.
  • Page 73 Options vacon • 70 Figure 43. Tighten the two screws of the keypad cable to the enclosure of the drive. Keypad mounted onto the drive. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 74: Text Keypad - Buttons

    • 71 Options 8.1.2 Text Keypad - buttons With the keypad it’s possible to control the speed of the motor, to supervise the state of the drive and to set the frequency converter’s parameters. The button section of the text keypad is shown in the following picture.

  • Page 75: Text Keypad

    Figure 45 the REF menu is active. The table below shows the structure of the main menu: Reference (REF) Reference from Keypad Monitor (MON) Monitoring values Parameters (PAR) Application parameters System Menu System/Fault Active fault (SYS/FLT) History fault Table 31. Keypad menus. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 76: Using The Keypad

    8.4.1 Main menu The menu structure of Vacon 20CP control software consists of a main menu and several submenus. Navigation in the main menu is shown below: R E A D Y R U N...

  • Page 77: Resetting Fault

    Every control ® place has its own parameter for selecting the frequency reference source. In the VACON 20 CP Local control place Remote control place drive, the is always the keypad.

  • Page 78: Reference Menu

    • 75 Options 8.4.4 Reference menu RE ADY R U N S TOP ALAR M FAULT RE F M O N PA R SYS / F WD KEY PA D B US Press to enter Change edit mode value Figure 47.

  • Page 79: Monitoring Menu

    Monitoring menu Monitoring values are actual values of measured signals as well as status of some control settings. It is visible in Vacon 20CP display, but it can not be edited. The monitoring values are listed in the Application Manual.

  • Page 80: Parameter Menu

    • 77 Options 8.4.6 Parameter menu In Parameter menu only the Quick setup parameter list is shown as default. To view the other ad- vanced parameter groups, see the Application Manual. The following figure shows the parameter menu view:...

  • Page 81: System/Fault Menu

    READY RUN STOP ALARM FAULT Browse for fault code(C xx), subcode(Id xx), days(d xx), hours(H xx), minutes(M xx) SYS / FLT I/O KEYPAD Figure 50. System and Fault menu. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 82 • 79 Options 8.4.7.1 Faults Active faults Reset faults Fault history Counters Software in- Under this menu, you can find In active fault situation, FAULT arrow is blinking and the display is blinking active fault menu item with fault code. If there are several active faults, you can check it by entering the active fault sub- menu F5.x.

  • Page 83: Fault Tracing

    Motor Underload Motor is under loaded Check load. Drive power is to high: decrease Power overload Supervision for drive power load. Table 32. Fault codes and descriptions. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 84 Reset the fault and restart. Error in the microprocessor monitoring If the fault occurs again, please Watchdog Malfunction contact your closest Vacon repre- Component fault sentative. Reset the fault and restart. Protection of unit when starting with rotat- Back EMF...
  • Page 85 Options vacon • 82 Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 86: Option Boards

    • 83 Options Option boards ® VACON 20 X drive family embodies a wide selection of expander boards with which the available ® I/O of VACON 20 X frequency converter can be increased and its versatility improved. ® There is one board slot (labelled D) on the VACON 20 X control board.

  • Page 87: Option Board Installation

    Figure 51. Opening the main cover, MU3 example. The relay outputs and other I/O-terminals may have a dangerous control voltage present even when the drive is disconnected from mains. • Remove the option slot cover. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 88 • 85 Options Figure 52. Removing the option slot cover. • Make sure that the sticker on the connector of the board says “dv” (dual voltage). This indicates that the board is compatible with Vacon 20X. See below: 9116.emf Slot coding •...
  • Page 89 Options vacon • 86 • Install the option board into the slot as shown in the picture below. Figure 53. Option board installation. • Mount the option slot cover. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 90 • 87 Options Figure 54. Mounting of option slot cover: remove the plastic opening for the option board ter- minals.

  • Page 91: Mains Switch

    M4x14 screw M5x23 screws Main switch 40A NLT40 assembly MU3 cover for main switch MU3 QDSS option spare kit 60S01129 M4x14 screw M5x23 screws Table 34. Mains switch kit content. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 92: Installation

    • 89 Options 8.6.1 Installation • Remove the cover from the drive. See the Figure 56. Figure 56. Cover open. • Open only the inlet holes where you need to run the cables. Cables pass through this inlet hole.
  • Page 93 Options vacon • 90 Figure 57. Mains switch and cables connected. • Connect the GROUND wire to the proper terminal (see the yellow-green cable on Figure 57. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 94 • 91 Options • Mount the plastic cover onto the drive with its screws and HMI cap: the instal- lation process has been completed. See Figure 58. Figure 58. Mount the plastic cover.

  • Page 95: Simple Operator Panel

    Start/Stop selector and ® potentiometer for frequency reference together with a mains switch to disconnect the VACON X from the mains when, for example, service actions are needed. This option can be mounted on the front side of the drive.

  • Page 96: Installation

    • 93 Options 8.7.1 Installation • Remove the cover from the drive. See the Figure 60. Figure 60. Cover open. • Open only the inlet holes where you need to run the cables. Cables pass through this inlet hole.
  • Page 97 Figure 61 and in the Table 36. • RED, BLUE and BLACK wires are signals from the potentiometer. • YELLOW, WHITE and GREY wires are signal from the selector switch. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 98 • 95 Options Table 36. Control I/O terminal signal connections to the simple operator panel. Standard I/O terminals Terminal Signal RS485_A Serial bus, negative RS485_B Serial bus, positive RED WIRE +10 Vref Reference output BLUE WIRE Analogue input, AI1+...
  • Page 99 • Mount the plastic cover onto the drive with its screws and the HMI cap: the installation process has been completed. See Figure 62. Figure 62. Mount the plastic cover. Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 100 • 97 Options...

  • Page 101: Safe Torque Off

    In circumstances where external influences (e.g. falling of suspended loads) are present additional measures (e.g. mechanical brakes) may be necessary to prevent any hazard. STO shall not be used as a control for starting or stopping the drive. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 102: Standards

    • 99 Safe Torque Off Standards The STO function has been designed for use in accordance with the following standards: Standards IEC 61508, Parts 1-7 EN 61800-5-2 EN 62061 ISO 13849-1 EN 954-1 IEC 60204-1 Table 38. Safety Standards.

  • Page 103: The Principle Of Sto

    ® In VACON 20 X, the STO function is realized by preventing the propagation of the control signals to the inverter circuit. The inverter power stage is disabled through redundant disabling paths which start from the two separated and galvanically isolated STO inputs (S1-G1, S2-G2 in Figure 63).

  • Page 104: Technical Details

    The reaction time of the STO function is the amount of time which passes from the moment in which ® the STO is activated until the system is in the Safe State. For VACON 20 X, the reaction time is 20...

  • Page 105: Connections

    Disconnect both the STO jumpers to allow the cabling of the terminals. The following examples show the basic principles for wiring the STO inputs and the STO output feedback. Local standards and regulations should be always followed in the final design. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 106: Safety Capability Cat.4 / Pl E / Sil 3

    • 103 Safe Torque Off 9.5.1 Safety Capability Cat.4 / PL e / SIL 3 For this safety capability, an external safety device must be installed. This must be used to dynam- ically activate the STO inputs and to monitor the STO output feedback.
  • Page 107 Safe State. In case of failure, check the wiring. If the fault recognized by the external safety device persists, the drive will have to be replaced/repaired. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 108: Safety Capability Cat. 3 / Pl E / Sil 3

    • 105 Safe Torque Off 9.5.2 Safety Capability Cat. 3 / PL e / SIL 3 The safety capability is reduced to Cat. 3 / PL e / SIL 3 if the STO inputs are statically used (which means they are forced to commute together).

  • Page 109: Safety Capability Cat.1 / Pl C / Sil 1

    Torque Off") and the motor stops by coasting. SWITCH POWER UNIT DC+/R+ DC-* Reinforced Figure 68. STO example without automatic monitoring of the feedback and STO inputs connect- ed in parallel. (*)Only for MU3. Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 110: Commissioning

    • 107 Safe Torque Off Commissioning 9.6.1 General wiring instructions Protect the STO cabling with a shielding or an enclosure to exclude external damage. Wires ferrules are highly recommended for all STO signals (inputs and feedback). The wiring should be done according to the general wiring instructions for the specific product. A shielded cable is required.

  • Page 111: Parameters And Fault Tracing

    • Reset the fault (through a digital input or from the keypad). • It is possible that a new start command is required for the restart (depending on the applica- tion and your parameter settings). Service support: find your nearest Vacon service center at www.vacon.com...

  • Page 112: Maintenance And Diagnostics

    The following table shows faults that may be generated by the software that monitors the hardware related to the STO safety function. If you detect any failure in safety functions, including STO, contact your local Vacon supplier. Fault Code Fault...
  • Page 113 Safe Torque Off vacon • 110 Service support: find your nearest Vacon service center at www.vacon.com...
  • Page 116 Find your nearest Vacon office on the Internet at: www.vacon.com Document ID: Manual authoring: documentation@vacon.com Order code: Vacon Plc. Runsorintie 7 65380 Vaasa Finland Subject to change without prior notice © 2014 Vacon Plc. Rev. E...

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