Triol AK06 Troubleshooting Manual
  1. Manuals
  2. Brands
  3. Triol Manuals
  4. DC Drives
  5. AK06
  6. Troubleshooting manual

Triol AK06 Troubleshooting Manual

Variable speed drive
Hide thumbs Also See for AK06:
Table of Contents

Advertisement

Quick Links

Troubleshooting
Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AK06 and is the answer not in the manual?

Questions and answers

Related Manuals for Triol AK06

Summary of Contents for Triol AK06

  • Page 1 Troubleshooting Manual...
  • Page 2 Troubleshooting manual AT.654254.050 ver.1.0...
  • Page 3 Variable Speed Drives Triol AK06. The list of all kinds of user manuals is discussed at the placing an order stage. E-documents version for the product is available on the official Triol Corporation website.
  • Page 4 Troubleshooting manual Copyright © Triol Trading LLC. 1993-2021 All rights reserved. No part of this publication may be reproduced or copied without prior written permission from Triol Trading LLC. All products and company names mentioned in this manual are trademarks or registered trademarks of their respective holders.

  • Page 5: Table Of Contents

    Electronic compartment ....................56 Power input/output compartment ..................58 External connection section ..................... 59 AK06-RD-300…420 with output frequency 200 Hz diagnostics flow charts ......60 Fans do not work ......................61 VSD indicators are not active ................... 62 No input voltage indication (or it does not match) ............. 63 DC bus voltage cannot be measured or measurements are incorrect .........
  • Page 6 Troubleshooting manual No data on ACS (SCADA) ....................68 Digital inputs do not work ....................69 Analog Inputs do not work ....................70 No supply voltage on the surface unit ................71 Constant «Emergency stop» is displayed ................72 Constant «Discr T» failure is displayed ................73 Diagnostics of phase failure.....................

  • Page 7: Safety Requirements And Personnel Qualification

    Troubleshooting manual Safety requirements and personnel qualification All the activities on installation, mounting, dismantling, operation and mainte- nance of a Variable Speed Drive must be carried out in conformity with effective local and electrical codes and regulations. Improper installation and operation of the drive may result in personal injury or equipment damage.
  • Page 8 Troubleshooting manual Safety Recommendation The drive must be installed, adjusted and serviced by qualified electrical maintenance personnel. Improper installation or operation of the drive may cause injury to personnel or damage to equipment. The drive must be installed and grounded in accordance with local and national electrical codes. There is a deadly level of voltage in drive’s cabinet.

  • Page 9: General Description

    Troubleshooting manual General description The Troubleshooting manual contents comprehensive step-by-step instruc- tion with description all possible alarms, faults and actions for their diagnostic and repair. Variable Speed Drive cabinet has five separate sections: power section with control system, section of power winding, input / output cabinet, gauge connection cabinet, extension units connection cabinet.

  • Page 10: List And Description Of Alarms And Faults

    Troubleshooting manual List and description of alarms and faults Troubleshooting of VSD at start motor, fault finding charts are given in Table be- low: Potential problem/Message Probable causes № Remedies on the controller display of message displaying Perhaps the mains power is not Supply power to the control sys- supplied to the control system Turn on auxiliaries located in the...
  • Page 11 Troubleshooting manual Potential problem/Message Probable causes № Remedies on the controller display of message displaying Malfunction of the controller Replace the controller UMKA07 Close all VSD doors with a loose closure; adjust the locks for a snug fit of the doors to the VSD «Open door»...
  • Page 12 VSD are entered in- the set rated power of the VSD correctly (you may need to contact a Triol service for assistance) Diagnosis occurs by alternating phase loops. If after loop alterna- tions error did not pass, then the...
  • Page 13 Troubleshooting manual Potential problem/Message Probable causes № Remedies on the controller display of message displaying Replace the electronics panel with a working one The adjusted number for the Restore the correct settings for measured voltage in the link is measuring voltage in the link entered incorrectly Connection of motor to the drive Alarm «Fail AutoSet»...
  • Page 14 Troubleshooting manual Potential problem/Message Probable causes № Remedies on the controller display of message displaying The readings of the voltage measurement in Ud do not coin- cide in a smaller direction with Defective electronic panel the actually measured ones. Replace the electronics panel with a working one Incorrectly entered adjusted Restore the correct settings for...
  • Page 15 PMM the vec- If it is not possible to eliminate, Alarm «Overtorch» is displayed tors of speed and moment do please contact Triol service hav- not coincide ing with you the VSD operation Check the correctness of the en- The program determined that in Alarm «Overshoot»...
  • Page 16 Probable causes № Remedies on the controller display of message displaying mode, vectors have fluctuations If it is not possible to eliminate, in loading above the specified please contact Triol service hav- ing with you the VSD operation AT.654254.050 ver.1.0...

  • Page 17: Replacement Of The Rmps + Udp Unit

    Troubleshooting manual Replacement of the RMPS + UDP unit. RMPS + UDP replacement procedure is the same for each VSD. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 18 Troubleshooting manual 3. Unscrew the screws which fixing RMPS + UDP units as shown at the figure 2 using crosshead screwdriver. Figure 2 – RMPS + UDP unit final dismantle step 4. Installation of a new RMPS + UDP unit must be done in reversal sequence. Connection of the RMPS + UDP unit must be carried out according to the electric circuit and marks.

  • Page 19: Replacement Of The Gb Unit

    Troubleshooting manual Replacement of the GB unit. GB replacement procedure is the same for each VSD. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 20 Troubleshooting manual 3. Unscrew the screws which fixing GB unit from fastening (yellow) as shown at figure 4 using crosshead screw driver. Figure 4 – Unscrew the screws which fixing GB unit 4. Remove the GB units from a VSD. 5.

  • Page 21: Replacement Of The Bvn Unit

    Troubleshooting manual Replacement of the BVN unit. BVN replacement procedure is the same for each VSD. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 22 Troubleshooting manual 3. Unscrew the BVN unit from fastening which is shown at figure 6 using cross- head screw driver. Figure 6 – BVN unit dismanting step 4. Installation of a new BVN unit must be done in reversal sequence. Connec- tion of the BVN unit must be carried out according to the electric circuit and marks.

  • Page 23: Replacement Of The 3Mds Unit

    Troubleshooting manual Replacement of the 3MDS unit. 3MDS replacement procedure is the same for each VSD. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 24 Troubleshooting manual 3. Unscrew the 3MDS unit from fastening which is shown at figure 8 using crosshead screw driver Figure 8 – 3MDS unit dismanting step 4. Installation of a new 3MDS unit must be done in reversal sequence. Connec- tion of the 3MDS unit must be carried out according to the electric circuit and marks.

  • Page 25: Replacement Of The Mdn Unit

    Troubleshooting manual Replacement of the MDN unit. MDN replacement procedure is the same for each VSD. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 26 Troubleshooting manual 3. Compress the tendrils of the plastic clips and remove the block, which is shown at figure 10 using lineman’s pliers. Figure 10 –MDN unit dismanting step 4. Installation of a new MDN unit must be done in reversal sequence. Connec- tion of the MDN unit must be carried out according to the electric circuit and marks.

  • Page 27: Replacement Of The Umka07 Controller

    Troubleshooting manual Replacement of the UMKA07 controller. UMKA07 controller replacement procedure is the same for each VSD. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 28 Troubleshooting manual 2. Disconnect the rest inputs shown on figure 12. Figure 12 – Places of the connectors of an UMKA07 controller AT.654254.050 ver.1.0...
  • Page 29 Troubleshooting manual 3. Disconnect the UMKA07 controller from fastening using crosshead screw- driver and wrench 10 mm (3/8”). The location of fastening is shown on figure Figure 13 – Location of UMKA07 controller fastening 4. Installation of the UMKA controller is carried out in reversed order. Connec- tion of the controller must be carried out according to the electric circuit.

  • Page 30: Replacement Of The Riss Unit

    Troubleshooting manual Replacement of the RisS unit. RisS replacement procedure is the same for each VSD. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 31 Troubleshooting manual 3. Unscrew the RisS unit from fastening which is shown at figure 15 using crosshead screw driver. Figure 15 – RisS unit final dismantle step 4. Installation of a new RisS unit must be done in reversal sequence. Connec- tion of the RisS unit must be carried out according to the electric circuit and marks.

  • Page 32: Replacement Of The Outm Unit

    Troubleshooting manual Replacement of the OutM unit. OutM replacement procedure is the same for each VSD. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 33 Troubleshooting manual 3. Unscrew the OutM unit from fastening which is shown at figure 17 using crosshead screwdriver. Figure 17 – OutM unit final dismantle step 4. Installation of a new OutM unit must be done in reversal sequence. Connec- tion of the OutM unit must be carried out according to the electric circuit and marks.

  • Page 34: Replacement Of The Extension Unit

    Troubleshooting manual Replacement of the extension unit. Extension unit replacement procedure is the same for each VSD, different only in numbers of extension units. VSD can be completed of one, two or three extension units. Preparations: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC-link.
  • Page 35 Troubleshooting manual 2. Unplug connectors (red) as shown at figure 19 and cut wires(yellow) from extension unit to the terminal block. For modernized block extension units wires unplug same as signal and power cable(red) Figure 19 – Unplug connectors and cut wire of extension unit. 3.
  • Page 36 Troubleshooting manual Figure 21 - Unscrew bolts which fixed external unit 5. Installation of a new external unit must be done in reversal sequence. Con- nection of the external unit must be carried out according to the electric cir- cuit and marks. Wire witch was cut, figure 20, plug-in in terminal block, as explain in step 3 AT.654254.050 ver.1.0...

  • Page 37: Replacement Two And More External Units

    Troubleshooting manual Replacement two and more external units For VSD with two and more external units replacement same as describe above, only, first unscrew and remove second or third unit that below main unit (main unit it is unit witch connect signal an power cable), descript on figure 22. Power connection Main unit...
  • Page 38 Troubleshooting manual 1. Unscrew screw fixed second unit, which shown at figure 23, using crosshead screwdriver. Figure 23 - Unscrew screw fixed second unit 2. Disconnect second unit from main, for that pull second unit in the opposite direction main unit, as shown at the figure 24. Figure 24 - Disconnect second unit from main AT.654254.050 ver.1.0...

  • Page 39: Instruction For Updating Software Umka And Gb

    Troubleshooting manual Instruction for updating software UMKA and GB Turning off power of VSD is prohibited during updating. Other parameters can be set in any sequence. Energize the VSD, wait until the controller displays the in- formation about the inter- face loading.
  • Page 40 Troubleshooting manual Go to the USB operation menu using the navigation buttons. Press «Change controller firmware» Enter the password and press the «Confirm» button. In case if you don’t know the password, please contact Triol Service. AT.654254.050 ver.1.0...
  • Page 41 Troubleshooting manual Select the file with the latest software version, press the «Select» button and update process begins. Updating process completed. It is necessary to check values of parameters in the following order: • Installation parameters; • Calculation of step-up transf. tap voltage; •...

  • Page 42: Drive Static Check

    Troubleshooting manual Drive static check Check the following connections • current breakers; • rectifier; • diode-thyristor modules; • DC bus filter; • inductance; • DC bus capacitors; • inverter; • diode - transistor module; • output filter; • inductance; • sine filter capacitors; •...
  • Page 43 Troubleshooting manual Input Variable speed drive input continuation Positive probe Negative probe Value in diode mode Comments А1 Conductivity For all VSDs В1 Conductivity For all VSDs С1 Conductivity For all VSDs А2 Conductivity For 12-24 pulse VSDs В2 Conductivity For 12-24 pulse VSDs С2 Conductivity...
  • Page 44 Troubleshooting manual Variable speed drive input continuation Positive probe Negative probe Value in diode mode Comments -DC1 В1 0.400+/- 20% For all VSDs -DC1 С1 0.400+/- 20% For all VSDs -DC1 А2 0.400+/- 20% For 12-24 pulse VSDs -DC1 В2 0.400+/- 20% For 12-24 pulse VSDs -DC1...
  • Page 45 Troubleshooting manual Output Positive probe Negative probe Value in diode mode +INV1 Capacitors charging +INV1 Capacitors charging +INV1 Capacitors charging -DC1 0.350+/- 20% -DC1 0.350+/- 20% -DC1 0.350+/- 20% +INV1 0.350+/- 20% +INV1 0.350+/- 20% +INV1 0.350+/- 20% -DC1 Capacitors charging -DC1 Capacitors charging -DC1...

  • Page 46: No Load Test

    Troubleshooting manual No Load Test Disconnect all load from the VSD! The following test is performed in the absence of a connected load to the VSD output terminals. If the «Tap Voltage» pa- rameter in «Commissioning» → «Installation parameters» → «SUT». «Step-Up Transformer tap»...
  • Page 47 Troubleshooting manual 2. Go to → «Commissioning» → «U/F» → «U/F curve». • set-up voltage and fre- quency points 4 as the max- imum motor operation volt- age and frequency. Voltage here is the VSD output. Volt- age can be set equal to sup- ply voltage;...

  • Page 48: Short Circuit Full Load Test Procedure

    Troubleshooting manual Short circuit full load test procedure 1. Install jumpers on the output of VSD between three output phases. Diameter of cables must be suitable for full VSD current level. Figure 26 – Scheme of jumper installation for full load test AT.654254.050 ver.1.0...
  • Page 49 Troubleshooting manual Output (3 phase) VSD rated Terminals per Recommended cable cross current phase, pcs section, AWG/kcmil (mm AWG 1 (50) AWG 1 (50) AWG 2/0 (70) AWG 2/0 (70) AWG 3/0 (95) AWG 3/0 (95) AWG 3/0 (95) MCM 300 (150) MCM 400 (185) MCM 400 (185) MCM 400 (185)
  • Page 50 Troubleshooting manual 3. To the status display se- lect displaying of three VSD currents. 4. Adjust U/f characteristic by the following steps: • Install Point 1 voltage – 10V; • Install Point 2 Voltage – 20V; • Install Point 3 Voltage –...

  • Page 51: Periodic Maintenance Of Vsd Triol

    Troubleshooting manual Periodic maintenance of VSD Triol The period through which it is necessary to conduct periodic maintenance of the drive is once every six months if VSD operated, once a year if it was not in use. Also, the maintenance is required before star after long idle time.
  • Page 52 Troubleshooting manual The bolts must be tightened with the specified torque for each thread. • M10 30 N•m; • M8 20 N•m; • M6 10 N•m. Surge arresters must not have visible damage. Leads from surge arresters are connected each to its phase. The ground wire are connected to the VSD enclosure.
  • Page 53 Troubleshooting manual 5. Check of electrical connections of electronic units. Visually check the condition of the electronics modules – there are no traces of soot. If dust is present, remove it with compressed air. Reconnect the connectors going to the GB, RMPS, OutM, RisS units and control contamination and oxides.
  • Page 54 Troubleshooting manual Machines must be turned on and off. Using the tester to check that is the breakers conduct when enabled and do not conduct when turned off. Upon detection of the faulty machine to replace by working one. Check the fuse holders and fuses themselves for correct operation. Upon detec- tion of a faulty fuse, replace with serviceable one.

  • Page 55: Ak06-Rd-300

    Troubleshooting manual APPENDIX A AK06-RD-300…420 with output frequency 200 Hz WARNING! Do not connect and disconnect live connections. Electronic control units of variable speed drives contain components made on the basis of metal-oxide semiconductor (MOS) technology that is not tol- erant to static electricity.

  • Page 56: Ak06-Rd-300

    Troubleshooting manual AK06-RD-300…420 with output frequency 200 Hz overview Electronic compartment Reference marks in VSD AK06-RD 300….420 Amps with output frequency up to 200 Hz. VSD AK06-RD 300….420 Amps with output frequency up to 200 Hz 1. Cabinet doors control 2.
  • Page 57 Troubleshooting manual 7. Automatic circuit breakers: • power supply of control system; • fan and lighting power supply; • transformer supply. 8. RMPS – power supply unit 9. UDP – signal light power supply Capacitors block of invertor Transformer power supply. Cabinet of installation and connection sensor 3MDS –...

  • Page 58: Power Input/Output Compartment

    Troubleshooting manual Power input/output compartment Reference marks in VSD AK06-RD 300….420 Amps with output frequency up to 200 Hz. VSD AK06-RD 300….420 Amps with output frequency up to 200 Hz 1. Slinging ears. 2. WYE - point connection terminal 3. RisS – measuring of motor winding resistance 4.

  • Page 59: External Connection Section

    Troubleshooting manual External connection section Reference marks in VSD AK06-RD 300….420 Amps with output frequency up to 200 Hz. 1. Expansion units. 2. Terminal block of external connections. 3. Door lock. AT.654254.050 ver.1.0...

  • Page 60: Ak06-Rd-300

    Troubleshooting manual AK06-RD-300…420 with output frequency 200 Hz diagnostics flow charts In this section described the following VSD failure diagnostics: 1. Fans do not work. 2. VSD indicators are not active. 3. No input voltage indication(or it does not match).

  • Page 61: Fans Do Not Work

    Troubleshooting manual Fans do not work VSD in operation and fan's working temperature is lower then temperature of at least one of the Wait until the temperature rises or change the fan setpoint. modules Open the operators compartment door. Set CB6 to the ON position, then close the VSD’s operator compartment door.

  • Page 62: Vsd Indicators Are Not Active

    Troubleshooting manual VSD indicators are not active VSD has voltage applied to all 6 (3) input phases and Apply voltage to the VSD input terminals and check that the VSD is it is in the range of 380/480 + 10% -15% grounded.

  • Page 63: No Input Voltage Indication (Or It Does Not Match)

    Troubleshooting manual No input voltage indication (or it does not match) VSD is on and the screen displays the current The controller displays output voltage values. mains voltage In the UMKA07 controller menu, go to the «Testing» life cycle, select the «Input parameters»...

  • Page 64: Dc Bus Voltage Cannot Be Measured Or Measurements Are Incorrect

    Troubleshooting manual DC bus voltage cannot be measured or measurements are incorrect VSD is on and the current voltage is displayed on The controller displays voltage values Ud. screen In the UMKA07 controller menu, go to the «Creating» life cycle, select the Check that the voltage adjusting value Ud is «DC bus calibration»...

  • Page 65: Failures Of Measuring Voltage Dc In Operation, Dc Overvoltage, Dc Undervoltage

    Troubleshooting manual Failures of measuring voltage DC in operation, DC overvoltage, DC un- dervoltage VSD is on and the current voltage is displayed on The controller displays voltage values Ud. screen In the UMKA07 controller menu, go to the «Сreating» life cycle, select the Check that the voltage adjusting value Ud is «DC bus calibration»...

  • Page 66: Supply Network Currents 1 Differs From Network 2 By More Than 20

    Troubleshooting manual Supply network currents 1 differs from network 2 by more than 20% The voltages applied to all supply networks are equal ±2%. If the supply The voltage is supplied to the VSD on all power networks are different, it is necessary to eliminate the voltage disbalance by circuits and it is the same replacing the transformer, by shifting the phase, or by connecting to a more powerful network (clean).

  • Page 67: No Connection With Downhole Measuring System (Sensors)

    Troubleshooting manual No connection with Downhole Measuring System (Sensors) Power to VSD as well as to guage unit is Power up the VSD, check that there is an indication on the surface guage unit. supplied In the UMKA07 controller menu, go to the «Commissioning» life cycle , select Check that the necessary communication the «Gauge»...

  • Page 68: No Data On Acs (Scada)

    Troubleshooting manual No data on ACS (SCADA) Power is supplied to the VSD as well as to the Apply power to the VSD, check that the modem has power, the antenna is modem or cluster controller connected and traffic is paid. In the UMKA07 controller menu, go to the «Commissioning»...

  • Page 69: Digital Inputs Do Not Work

    Troubleshooting manual Digital inputs do not work Apply power to the VSD, check that power is supplied to the USP units and the VSD and USP block are powered indicator is ON. Using a tester, make sure that the signal comes to the terminal block USP. If The digital input signal from the user reaches the the signal does not arrive, then eliminate the cause of the lack of signal at the USP unit...

  • Page 70: Analog Inputs Do Not Work

    Troubleshooting manual Analog Inputs do not work Apply power to the VSD, check that power is supplied to the USP units and the VSD and USP block are powered indicator is ON. Using a tester, make sure that the signal comes to the terminal block USP. If The digital input signal from the user reaches the the signal does not arrive, then eliminate the cause of the lack of signal at the USP unit...

  • Page 71: No Supply Voltage On The Surface Unit

    Troubleshooting manual No supply voltage on the surface unit A voltage of 480/380 is applied to the VSD Check that the VSD is grounded; apply voltage to the VSD input terminals. CB1, CB2, CB3, CB9, CB 10 circuit Turn CB9,CB10 to ON position. breakers are ON The transformer is connected correctly on the Connect the CPT1 transformer according to the voltage applied to the VSD.

  • Page 72: Constant "Emergency Stop" Is Displayed

    Troubleshooting manual Constant «Emergency stop» is displayed 380/480V voltage applied to the VSD Check that the VSD is grounded; apply voltage to the VSD input terminals. To release the «emergency stop» button, rotate the button top in the direction Emergency stop button depressed of the arrows on it.

  • Page 73: Constant "Discr T" Failure Is Displayed

    Troubleshooting manual Constant «Discr T» failure is displayed Apply voltage to the VSD input terminals and check the heat sink of the rectifier Voltage is applied to the VSD and the rectifier unit - the temperature of the heat sink must be below 70 ℃. If the radiator is radiators have a temperature below 70 ℃...

  • Page 74: Diagnostics Of Phase Failure

    Troubleshooting manual Diagnostics of phase failure Check that the power is supplied to all networks and it corresponds to the VSD has voltage applied to all input phases following values: 380/480 + 15% -15%. If there is no 6-phase power supply, (3 or 6, 9 depends on pulses) connect 1 network in parallel with the second one using jumpers of the and it is in the range of 380/480 + 10% -15%...
  • Page 75 Troubleshooting manual VSD overheating alarm VSD operates and the ambient temperature is below the maximum operating temperature of Reduce VSD load or use VSD suitable to work with this ambient temperature. Diagnose the reasons for a fan not turning ON «Cooling fans do not work». Check that VSD cooling fans are working.

  • Page 76: Output Current Are Not Measured Or Measurement Are Incorrect

    Troubleshooting manual Output current are not measured or measurement are incorrect VSD is turned on and the current voltage is The controller displays the value of the output currents. displayed on the screen In the UMKA07 controller menu, go to the «Creating» life cycle, select the «Current calibration»...

  • Page 77: The Vsd Diagnostics During Power Switch Failure (Stopped)

    Troubleshooting manual The VSD diagnostics during Power Switch failure (stopped) On the controller screen, in addition to the alarm value, other parameters The VSD is turned on and the Power switch alarm is from the drive are displayed. Otherwise, there may be no connection displayed on the screen between UMKA07 and the drive (GB).

  • Page 78: Replacing Of An Inverter Current Sensors

    Troubleshooting manual Replacing of an inverter current sensors. A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC- link. For unit disassembly you need next tool: •...
  • Page 79 Troubleshooting manual Figure 28 – Electronic units panel fixing bolts Figure 29 – Unscrewing fixing bolts 3. Remove panel as shown on the figure 30, if necessary bite through (use side cut- ter) cable ties which fixing cables on panel. Figure 30 –...
  • Page 80 Troubleshooting manual Step 2. Uninstall current sensors Uninstall current sensor as shown on the figure 31 Figure 31 – Current sensors 1. Unscrew three bolts fixing cables on the buses, using wrenches size 17 mm (11/16”), as shown on the figure 32. 2.
  • Page 81 Troubleshooting manual 3. Uninstall current sensors. For that move cables aside from buses, after that take off current sensors from buses, as shown on the figure 33. Figure 33 – Uninstall current sensors Step 3. Installation new current sensors 1. Installation of a new current sensors must be done in reversal sequence. Bolts must be tightened with a torque: M10 –...

  • Page 82: Main Fan Unit Replacing

    Troubleshooting manual Main fan unit replacing Preparation: A VSD must be de-energized and disconnected from a power supply. Using a multimeter, make sure that there is no dangerous voltage on a DC- link. For fan dismantling you need next tool: •...
  • Page 83 Troubleshooting manual Electronic units pantel Figure 35 – Fan compartment Figure 36 – Remove cover of fan compartment AT.654254.050 ver.1.0...
  • Page 84 Troubleshooting manual 2. Unscrew fan fixed nuts, as show in the figure 38. Main fan Figure 37 – Main fan. Figure 38 – Unscrew fan fixed nuts. 3. Uninstall main fan, as shown on the figure 39. Figure 39 – Uninstall main fan. Step 3.
  • Page 85 Troubleshooting manual AT.654254.050 ver.1.0 2021...

Table of Contents

Save PDF