Service manual

ManualsBrandsDanfoss ManualsHome building and DecorVLT HVAC Basic Drive FC 101

MAKING MODERN LIVING POSSIBLE

Service Manual

VLT

HVAC Basic Drive FC 101

Summary of content (106 pages)

PAGE 1
MAKING MODERN LIVING POSSIBLE Service Manual VLT® HVAC Basic Drive FC 101
PAGE 2
PAGE 3
VLT® HVAC Basic Drive Service Manual Contents Contents 1 Introduction 6 1.1 Purpose 6 1.2 Product Overview 6 1.3 Safety 6 1.4 Electrostatic Discharge (ESD) 6 1.5 Tools Required 9 1.6 Electrical Installation in General 10 1.7 Exploded Views – H Frame Size 11 1.8 Exploded Views - I Frame Size 14 1.9 Ratings Tables 17 1.9.1 Short Circuit and Over-current Trips 17 1.9.2 DC Voltage Levels 17 2 Frequency Converter Control 18 2.1 Introduction 18 2.2 Status Messages 18 2.
PAGE 4
VLT® HVAC Basic Drive Service Manual Contents 4.4 Visual Inspection 32 4.5 Fault Symptoms 33 4.5.1 No Display 33 4.5.2 Intermittent Display 33 4.5.3 Display (Line2) Flashing 33 4.5.4 WRONG or WRONG LCP Displayed 33 4.5.5 Motor Will Not Run 33 4.5.6 Incorrect Motor Operation 34 4.6 Warnings and Alarms 34 4.6.1 Alarms 34 4.6.2 Warnings 35 4.6.3 Warning And Alarm Messages 35 4.7 After Repair Tests 5 Frequency Converter and Motor Applications 5.
PAGE 5
VLT® HVAC Basic Drive Service Manual Contents 6.4.3 Basic Control Card Voltage Test 53 6.4.4 Input Imbalance of Supply Voltage Test 54 6.4.5 Input Waveform Test 54 6.4.6 Output Imbalance of Motor Supply Voltage Test 55 6.4.7 Input Terminal Signal Tests 55 6.5 Initial Start Up Or After Repair Drive Tests 7 H-Frame Size Disassembly and Assembly Instructions 56 57 7.1 Electrostatic Discharge (ESD) 57 7.2 General Disassembly Procedure 57 7.
PAGE 6
VLT® HVAC Basic Drive Service Manual Contents 7.6.2 Power Card Cover 73 7.6.3 Power Card 74 7.6.4 Heatsink and DC Coils 74 7.6.5 Heatsink Fan Assembly 75 8 I-Frame Size Disassembly and Assembly Procedures 8.1 General Disassembly Procedure 76 8.2 I6 Frame Size Disassembly and Assembly Instructions 76 8.2.1 Control Card and Control Card Mounting Plate 76 8.2.2 Cable Mounting Plate 77 8.2.3 Heatsink Fan Assembly 77 8.2.4 SMPS Card 78 8.2.5 Bus Bar Unit 78 8.2.6 Power Card 79 8.2.
PAGE 7
VLT® HVAC Basic Drive Service Manual Contents 8.4.9 DC Bus Bar Assembly 93 8.4.10 Heatsink Fan Assembly 93 8.4.11 Capacitor Bank 94 8.4.12 DC Coil 94 8.4.13 IGBT 95 8.4.14 Thyristor 95 9 Block Diagrams 96 9.1.1 H6 Frame Size 96 9.1.2 I6 Frame Size 97 9.1.3 H7, H8, I7, I8 Frame Size 98 9.1.4 H9 Frame Size 99 9.1.
PAGE 8
1 1 Introduction VLT® HVAC Basic Drive Service Manual 1 Introduction 1. DO NOT touch electrical parts of the frequency converter when connected to mains. Also make sure that other voltage inputs have been disconnected (linkage of DC intermediate circuit). Be aware that there may be high voltage on the DC link even when the LEDs are turned off. Before touching any potentially live parts of the frequency converter, wait at least as stated in Table 1.1. 2.
PAGE 9
VLT® HVAC Basic Drive Service Manual Introduction 1 1 1.4.1 Frame Size Definitions Model HP @200–240 V AC kW @200–240 V AC Frame Size IP Rating Repairable Yes/No PK25 0.33 0.25 H1 IP20 No PK37 0.5 0.37 H1 IP20 No PK75 1.0 0.75 H1 IP20 No P1K5 2.0 1.5 H1 IP20 No P2K2 3.0 2.2 H2 IP20 No P3K7 5.0 3.7 H3 IP20 No P5K5 7.5 5.5 H4 IP20 No P7K5 10.0 7.5 H4 IP20 No P11K 15.0 11.0 H5 IP20 No P15K 20.0 15.0 H6 IP20 Yes P18K 25.0 18.
PAGE 10
1 1 VLT® HVAC Basic Drive Service Manual Introduction Model HP @380–480 V AC kW @380–480 V AC Frame Size IP Rating Repairable Yes/No PK37 0.5 0.37 H1 IP20 No PK75 1.0 0.75 H1 IP20 No P1K5 2.0 1.5 H1 IP20 No P2K2 3.0 2.2 H2 IP20 No P3K0 4.0 3.0 H2 IP20 No P4K0 5.0 4.0 H2 IP20 No P5K5 7.5 5.5 H3 IP20 No P7K5 10.0 7.5 H3 IP20 No P11K 15.0 11.0 H4 IP20 No P15K 20.0 15.0 H4 IP20 No P18K 25.0 18.0 H5 IP20 No P22K 30.0 22.
PAGE 11
VLT® HVAC Basic Drive Service Manual Introduction Model HP @525–600 V AC kW @525–600 V AC Frame Size IP Rating Repairable Yes/No P2K2 3.0 2.2 H9 IP20 No P3K0 4.0 3.0 H9 IP20 No P5K5 7.5 5.5 H9 IP20 No P7K5 10.0 7.5 H9 IP20 No P11K 15.0 11.0 H10 IP20 Yes P15K 20.0 15.0 H10 IP20 Yes P22K 30.0 22.0 H6 IP20 Yes P30K 40.0 30.0 H6 IP20 Yes P45K 60.0 45.0 H7 IP20 Yes P55K 70.0 55.0 H7 IP20 Yes P75K 100.0 75.0 H8 IP20 Yes P90K 125.0 90.
PAGE 12
1 1 VLT® HVAC Basic Drive Service Manual Introduction 1.6 Electrical Installation in General All cabling must comply with national and local regulations on cable cross-sections and ambient temperature. Copper conductors required, (75 °C) recommended. Power [kW] Torque [Nm] Frame IP class 3x200-240 V 3x380-480 V Line Motor DC connection Control terminals Earth Relay H1 IP20 0.25-1.5 0.37-1.5 1.4 0.8 0.8 0.5 0.8 0.5 H2 IP20 2.2 2.2-4 1.4 0.8 0.8 0.5 0.8 0.5 H3 IP20 3.7 5.
PAGE 13
VLT® HVAC Basic Drive Service Manual Introduction 1 1 1.7 Exploded Views – H Frame Size NOTE 130BC341.10 Non-repairable units are not shown with exploded views. 14 13 12 11 10 9 8 15 7 3 4 2 6 5 16 18 1 17 Illustration 1.
PAGE 14
VLT® HVAC Basic Drive Service Manual 1 1 17 14 18 130BC342.10 Introduction 16 15 12 19 13 11 9 7 3 20 10 8 5 22 6 4 2 23 1 24 Illustration 1.
PAGE 15
VLT® HVAC Basic Drive Service Manual 1 1 130BC214.11 Introduction 19 18 20 17 15 16 14 21 13 12 11 22 10 9 8 5 6 7 2 1 3 4 Illustration 1.
PAGE 16
VLT® HVAC Basic Drive Service Manual Introduction 1 1 7 10 9 8 130BC046.11 1.8 Exploded Views - I Frame Size 5 2 3 6 4 1 13 12 14 15 11 16 Illustration 1.4 Exploded View - I6 Frame Size 1 Local Control Panel (LCP) 9 DC coil 2 Front cover 10 Heatsink 3 Cradle 11 Fan assembly 4 Control card 12 Cable mounting plate 5 Control card mounting plate 13 RFI filter 6 Fan 14 Connectors 7 Bus bar unit 15 EMC shield 8 Power card 16 Cable entry Table 1.
PAGE 17
VLT® HVAC Basic Drive Service Manual 1 1 130BC215.11 Introduction 16 15 14 13 12 17 11 10 18 9 8 19 7 20 21 6 3 4 5 22 2 1 23 24 25 Illustration 1.
PAGE 18
1 1 130BC216.11 VLT® HVAC Basic Drive Service Manual Introduction 11 10 9 2 4 6 5 7 8 3 12 1 14 13 18 15 16 17 19 Illustration 1.
PAGE 19
VLT® HVAC Basic Drive Service Manual Introduction 1 1 1.9 Ratings Tables 1.9.1 Short Circuit and Over-current Trips The frequency converter is protected against short circuits with current measurement in each of the three motor phases or in the DC link. A short circuit between two output phases causes an over current in the inverter. The inverter turns off the IGBTs individually when the short circuit current exceeds the permitted value (Alarm 16 Trip Lock). 1.9.
PAGE 20
Frequency Converter Control VLT® HVAC Basic Drive Service Manual 2 Frequency Converter Control 2 2 when operating in local (hand) mode. These inputs include start, stop, reset, and speed reference. 2.1 Introduction Frequency converters are designed with self-diagnostic circuitry to isolate fault conditions and activate display messages which greatly simplify troubleshooting and service. The operating status of the frequency converter is displayed in real time.
PAGE 21
VLT® HVAC Basic Drive Service Manual Frequency Converter Control control cable is run between frequency converters, and not between frequency converters and other devices. 14-28 Production Settings and 14-29 Service Code, are the relevant service parameters. Parameters for configuring the input and output using NPN and PNP. Parameter settings are displayed by pressing [Main Menu] on the LCP. These parameters cannot be changed while the motor is running.
PAGE 22
2 2 Frequency Converter Control VLT® HVAC Basic Drive Service Manual 2.6 Control Terminal Functions Table 2.2 describes the functions of the control terminals. Many of these terminals have multiple functions determined by parameter settings. See Illustration 2.1. Terminal No. Function 42, 45 Analog and digital outputs for indicating values such as frequency, reference, current and torque. The analog signal is 0 to 20 mA, or 4 to 20 mA at a maximum of 500 Ω.
PAGE 23
3 Phase power input L1 L2 L3 130BB626.10 VLT® HVAC Basic Drive Service Manual Frequency Converter Control U V W PE PE Motor UDC- Not present on all power sizes UDC+ +10Vdc 50 (+10V OUT) 0-10Vdc0/4-20 mA 53 (A IN) 0-10Vdc0/4-20 mA 54 (A IN) relay2 06 05 240V AC 3A 04 55 (COM A IN/OUT) 42 0/4-20mA A OUT / DIG OUT relay1 03 45 0/4-20mA A OUT / DIG OUT 02 01 Bus ter.
PAGE 24
2 2 Frequency Converter Control VLT® HVAC Basic Drive Service Manual 2.7 Earthing Shielded Cables Connect the screened control cables to the metal cabinet of the frequency converter with cable camps at both ends. Table 2.3 shows earth cabling for optimal results. Correct earthing Control cables and cables for serial communication must be fitted with cable clamps at both ends to ensure the best possible electrical connection.
PAGE 25
Internal Frequency Converte... VLT® HVAC Basic Drive Service Manual 3 Internal Frequency Converter Operation A custom integrated circuit generates a pulse width modulation (PWM) waveform, which is then sent to the interface circuitry located on the power card. 3.1 General 3 3 3.2 Description of Operation A frequency converter is an electronic controller that supplies a regulated amount of AC power to a three-phase induction motor to control the motor speed.
PAGE 26
Internal Frequency Converte... VLT® HVAC Basic Drive Service Manual The control card logic communicates via serial link with outside devices such as personal computers or Programmable Logic Controllers (PLC). • provides two voltage supplies for use from the control terminals. 24 V DC is used for switching functions such as start, stop, and forward/reverse. The 24 V DC supply also supplies 200 mA of power, which can partly be used to power external encoders or other devices.
PAGE 27
VLT® HVAC Basic Drive Service Manual Internal Frequency Converte... The low voltage power supplies are activated when the DC bus reaches approximately 50 V DC less than the alarm voltage low for the DC bus (see rating tables in 1 Introduction). After a short delay, an inrush enable signal is sent from the control card to the power card SCR gating circuit. The SCRs are automatically gated when forward biased, as a result acting similar to an uncontrolled rectifier.
PAGE 28
Thyristor x3 130BC135.10 VLT® HVAC Basic Drive Service Manual Internal Frequency Converte... Brake not connected to terminal on FC 101 AC / DC BR DC /AC A x3 RFI _RL 1 RFI _ RL 2 INV GD BR GD RL 1 7 xGD RL 1 RL 2 uC+ EEP RL 2 RFI _ RL 1 RFI _ RL 2 UINV_P UINV_N D-I/O A-I/O Isol. RS 485 SMPS VDD (GND ) 24V SAFE _ FB Tmp _ VGDS VCX (GX) 5V VCC VCC (GND) 5V FAN FFB ”Internal Communication” Int. fans Imax 2 comp. Level Shift E _FAN E _FFB MCP control panel Temp. conv.
PAGE 29
VLT® HVAC Basic Drive Service Manual 130BC335.10 Internal Frequency Converte... Brake not connected to terminal on FC 101 Inrush MAINS L1 L2 L3 A x3 RFI _ RL 2 x3 U V W A A o C Motor RFI (variations) 3 3 DC /AC BR AC / DC RFI _ RL 1 INV GD BR BR FB GD uC+ EEP RL 2 RFI _RL 1 VGD +/- 15 /UDC -/-5 Inrush Control Card UINV_P D-I /O A-I /O UINV_N SAFE _ FB Tmp _VGDS VCX (GX ) 5V VCC (GND) 5V VCC VDD (GND) 24V FAN 1 FFB 1 Isol. RS 485 Int. fans Imax2 comp.
PAGE 30
VLT® HVAC Basic Drive Service Manual 3.3.3 Inverter Section In the inverter section (see Illustration 3.8), gate signals are delivered from the control card, through the power card to the gates of the IGBTs. The series connection of each set of IGBTs is delivered to the output, first passing through the current sensors. Once a run command and speed reference are present, the IGBTs begin switching to create the output waveform, as shown in Illustration 3.8.
PAGE 31
VLT® HVAC Basic Drive Service Manual 130BC337.10 Internal Frequency Converte... Brake not connected to terminal on FC 101 Inrush MAINS L1 L2 L3 A x3 RFI _ RL 2 x3 U V W A A o C Motor RFI (variations) 3 3 DC /AC BR AC / DC RFI _ RL 1 INV GD BR BR FB GD uC+ EEP RL 2 RFI _RL 1 VGD +/- 15 /UDC -/-5 Inrush Control Card UINV_P D-I /O A-I /O UINV_N SAFE _ FB Tmp _VGDS VCX (GX ) 5V VCC (GND) 5V VCC VDD (GND) 24V FAN 1 FFB 1 Isol. RS 485 Int. fans Imax2 comp.
PAGE 32
3 3 VLT® HVAC Basic Drive Service Manual Internal Frequency Converte... 3.3.4 Fan Speed Control IP20 Enclosure H6 IP20 H7 H8 Enclosure Voltage T2 T2 T2 T2 T2 T2 Power Rating (kW) 15 18. 5 22 30 37 45 45 45 45 45 45 45 60 60 60 60 60 60 36 36 36 36 36 36 FAN start temperature °C FAN max speed temperature °C FAN stop temperature °C Table 3.
PAGE 33
Troubleshooting VLT® HVAC Basic Drive Service Manual 4 Troubleshooting CAUTION 4.1 Troubleshooting Tips Before repairing a frequency converter, read and understand the following instructions. 1. Note all warnings concerning voltages present in the frequency converter. Always verify the presence of AC input voltage and DC bus voltage before working on the unit. Some points in the frequency converter are referenced to the negative DC bus.
PAGE 34
4 4 VLT® HVAC Basic Drive Service Manual Troubleshooting 4.4 Visual Inspection Visually inspect the conditions in Table 4.1 as part of any initial troubleshooting procedure. Inspect For Description Auxiliary equipment Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers that may reside on input power side of frequency converter or output side to motor. Examine operation and condition of these items as possible causes for operational faults.
PAGE 35
VLT® HVAC Basic Drive Service Manual Troubleshooting 4.5.3 Display (Line2) Flashing 4.5 Fault Symptoms 4.5.1 No Display On 130BP044.10 The LCP display provides two display indications. One with the backlit LCD alphanumeric display. The other is three LED indicator lights near the bottom of the LCP. If the green power on LED is illuminated but the backlit display is dark, it indicates that the LCP is defective and must be replaced. CAUTION The frequency converter may start immediately.
PAGE 36
4 4 VLT® HVAC Basic Drive Service Manual Troubleshooting Check control wiring to ensure that the proper reference signal is present at the input terminals. Also check that the unit is properly programmed to accept the signal provided. Refer to the Input Terminal Signal Test. NOTE Off 1 (2 or 3) This message indicates that bit #1 (or #2, or #3) in the control word is logic “0”. This situation only occurs when the frequency converter is being controlled via the fieldbus.
PAGE 37
Troubleshooting VLT® HVAC Basic Drive Service Manual TRIPLOCK (DISC> MAINS): Requires that the main AC input power to the frequency converter must be disconnected long enough for the display to go blank. The fault condition must be removed and power reapplied. Following power up, the fault indication changes to TRIP (RESET) and allow for manual, digital, or serial bus reset. Line 2 displays alarm and the associated number while line 3 identifies the alarm in plain language.
PAGE 38
4 4 VLT® HVAC Basic Drive Service Manual Troubleshooting No.
PAGE 39
VLT® HVAC Basic Drive Service Manual Troubleshooting WARNING/ALARM 4, Mains phase loss A phase is missing on the supply side, or the mains voltage imbalance is too high. This message also appears for a fault in the input rectifier on the frequency converter. Options are programmed at 14-12 Function at Mains Imbalance. Troubleshooting Check the supply voltage and supply currents to the frequency converter.
PAGE 40
Troubleshooting VLT® HVAC Basic Drive Service Manual ALARM 14, Earth (ground) fault There is current from the output phases to earth, either in the cable between the frequency converter and the motor or in the motor itself. Troubleshooting: Remove power to the frequency converter and repair the earth fault. Check for earth faults in the motor by measuring the resistance to ground of the motor leads and the motor with a megohmmeter.
PAGE 41
Troubleshooting VLT® HVAC Basic Drive Service Manual Troubleshooting Turn off the frequency converter and remove the earth fault. Measure the resistance to ground of the motor leads and the motor with a megohmmeter to check for earth fault in the motor. WARNING 47, 24 V supply low The 24 V DC is measured on the control card. The external 24 V DC backup power supply may be overloaded, otherwise contact the Danfoss supplier. WARNING 48, 1.8 V supply low The 1.
PAGE 42
Troubleshooting 4. Apply AC power to frequency converter. 5. Give the frequency converter a run command and slowly increase reference (speed command) to approximately 40 Hz. 6. Using an analog volt meter or a DVM capable of measuring true RMS, measure phase-to-phase output voltage on all three phases: U to V, U to W, V to W. All voltages must be balanced within 8 V. If unbalanced voltage is measured, refer to 6.4.2 Input Voltage Test. 7. Stop frequency converter and remove input power.
PAGE 43
Frequency Converter and Mot... VLT® HVAC Basic Drive Service Manual 5 Frequency Converter and Motor Applications 5.1.1 Overvoltage Trips 5.1 Torque Limit, Current Limit, and Unstable Motor Operation Excessive loading of the frequency converter can result in warning or tripping on torque limit, over current, or inverter time.
PAGE 44
5 5 VLT® HVAC Basic Drive Service Manual Frequency Converter and Mot... When the input voltage becomes unbalanced or a phase disappears completely, the ripple voltage increases. This situation causes the frequency converter to trip and issue Alarm 4, Mains Phase Loss. In addition to missing phase voltage, a line disturbance or imbalance can cause an increased bus ripple.
PAGE 45
Frequency Converter and Mot... VLT® HVAC Basic Drive Service Manual 5.1.5 Motor/Load Problems Problems with the motor, motor wiring, or mechanical load on the motor can develop in a number of ways. The motor or motor wiring can develop a phase-to-phase or phase-toearth short resulting in an alarm indication. Checks must be made to determine whether the problem is in the motor wiring or the motor itself.
PAGE 46
VLT® HVAC Basic Drive Service Manual 5.2.4 Sources of EMI frequency, and variable voltage PWM waveform. This high rate of voltage change [dU/dt] is the primary source of the frequency converter generated EMI. Modern frequency converters (see Illustration 5.1) utilize IGBTs to provide an efficient and cost effective means to create the Pulse Width Modulated (PWM) output waveform necessary for accurate motor control.
PAGE 47
VLT® HVAC Basic Drive Service Manual Frequency Converter and Mot... to flow in undesirable paths, thus exposing other locations to the EMI. 1 3 130BC345.10 2 4 5 6 Illustration 5.4 Alternate Signal Conductor Currents NOTE High frequency currents can be coupled into the mains supplying the frequency converter when the mains conductors are located close to the motor cables. 5.2.
PAGE 48
VLT® HVAC Basic Drive Service Manual Test Procedures 130BC299.10 6 Test Procedures 6.1 Non-repairable Units H1-H5 and I2-I4 are non-repairable units and should not be repaired. The information about Line/Motor/UDC+terminals is useful to verify what went wrong with these frequency converters, for statistics and WIIS purposes, but also to avoid replacing a frequency converter that is actually not defective. 1 8 7 2 130BB634.10 6 6 3 6 5 1 4 MAINS 2 4 Illustration 6.2 I2 Frame IP54 380-480 V, 0.
PAGE 49
VLT® HVAC Basic Drive Service Manual 130BD011.10 130BC201.10 Test Procedures 6 6 Illustration 6.3 I3 Frame IP54 380-480 V, 5.5-7.5 kW 1 RS-485 2 Line in 3 Earth 4 Wire clamps 5 Motor 6 UDC 7 Relays 8 I/O Illustration 6.4 I4 Frame IP54 380-480 V, 0.75-4.0 kW 1 RS-485 2 Line in 3 Earth 4 Wire clamps 5 Motor 6 UDC 7 Relays 8 I/O Table 6.4 Table 6.
PAGE 50
6 6 Test Procedures VLT® HVAC Basic Drive Service Manual 6.2 Introduction WARNING DISCHARGE TIME! Frequency converters contain DC-link capacitors that can remain charged even when the frequency converter is not powered. To avoid electrical hazards, disconnect AC mains, any permanent magnet type motors, and any remote DClink power supplies, including battery backups, UPS and DC-link connections to other frequency converters.
PAGE 51
Test Procedures VLT® HVAC Basic Drive Service Manual 6.3.2 Rectifier Circuit Test 6.3.3 Inverter Section Tests Pay close attention to the polarity of the meter leads to ensure the identification of any faulty component, in case an incorrect reading appears. The inverter section is primarily made up of the IGBTs used for switching the DC bus voltage to create the output to the motor. The frequency converter also has clamping capacitors between +UDC and -UDC on the IGBT.
PAGE 52
VLT® HVAC Basic Drive Service Manual Test Procedures 6.3.5 Location of UDC Terminals NOTE H6 Remove the IP20 front cover, then remove the capacitor vibration support. The terminals K601 (+UDC) and K611 (-UDC) are located between the 4 capacitors on the circuit board. Remove the metal cover to access these terminals. This test is applicable for H7, H8, I7, and I8 units only.
PAGE 53
130BC356.10 VLT® HVAC Basic Drive Service Manual 130BC354.10 Test Procedures Illustration 6.9 +/- UDC Terminals 6 6 H9 The UDC terminals are available on connectors at the bottom of the frequency converter. Static measurements can be done directly from here. 130BC351.10 Illustration 6.7 The UDC Terminals on the Circuit Board 130BC355.10 H7 and H8 Remove the IP20 front cover to access the terminals directly on the power card MK900. W V U L3 L2 L1 DC+ DC- Illustration 6.
PAGE 54
VLT® HVAC Basic Drive Service Manual Test Procedures 130BC351.10 130BC358.10 H10 Remove the front terminal cover to access the connectors. The UDC terminals are located inside the frequency converter. 6 6 V U L3 L2 L1 Illustration 6.13 +/- UDC Terminals on Current Sensor Board DC+ DC- 130BC359.10 W Illustration 6.11 UDC Terminals Location on H10 Frequency Converter 130BC356.
PAGE 55
Test Procedures VLT® HVAC Basic Drive Service Manual Dynamic tests are performed without the motor being connected to UVW connector. Program the frequency converter to approximately 50 Hz on start. Dynamic tests can indicate if one of the IGBT does not switch, and the output voltage drops on the fault terminal, UVW. Dynamic tests are conducted to check the IGBT. Conduct the test without the motor being connected to the frequency converter. Program the multimeter to AC 1000 V.
PAGE 56
VLT® HVAC Basic Drive Service Manual control wiring and repeat the test. If this test is successful, then continue. Remember to check the customer connections. If still unsuccessful, change the control card. Measure the 10 V DC control voltage at terminal 50 with respect to terminal 55. The meter must read between 9.2 and 11.2 V DC. An incorrect reading here could indicate that a fault in the customer connections loads down the supply. Disconnect control wiring and repeat the test.
PAGE 57
VLT® HVAC Basic Drive Service Manual Test Procedures With a phase loss, the current waveform of the remaining phases would take on the appearance shown in Illustration 6.17. 0.0 ms 130BX144.10 Input B 1. Using a voltmeter, measure AC output voltage at frequency converter motor terminals 96 (U), 97 (V), and 98 (W). Measure phase-to-phase checking U to V, then U to W, and then V to W. All three readings must be within 8 V AC of each other.
PAGE 58
6 6 Test Procedures VLT® HVAC Basic Drive Service Manual Digital Inputs With digital inputs displayed, control terminals 18, 19, 27, and 29 are shown left to right, with a 1 indicating the presence of a signal. If the desired signal is not present in the display, the problem is either in the external control wiring to the frequency converter or a faulty control card. To determine the fault location, use a voltmeter to test for voltage at the control terminals.
PAGE 59
VLT® HVAC Basic Drive Service Manual H-Frame Size Disassembly a... 7 H-Frame Size Disassembly and Assembly Instructions 7.1 Electrostatic Discharge (ESD) CAUTION Frequency converters contain dangerous voltages when connected to the main voltage. Never perform any disassembly when power is applied. Remove power to the frequency converter, and wait until the frequency converter capacitors fully discharge. Only a competent technician must carry out the service.
PAGE 60
1 7.3.2 Heatsink Fan Assembly 2 3 1. Unplug the fan cable 2. Remove 4 screws on fan cover plate. 3. Remove the fan. Reinstall in the reverse order. 4 130BC113.11 130BC108.11 VLT® HVAC Basic Drive Service Manual H-Frame Size Disassembly a... 1 2 7 7 3 Illustration 7.1 Control Card and Control Card Mounting Plate 1 LCP 2 Cradle 3 Control card 4 Control card mounting plate Table 7.1 58 Illustration 7.2 Heatsink Fan Assembly 1 Fan cover plate 2 Screws 3 Fan assembly Table 7.
PAGE 61
VLT® HVAC Basic Drive Service Manual 7.3.3 DC Coil 7.3.4 DC Link Card 1. Remove the 4 screws on the DC coil cover to access the DC coils. 2. Remove the 4 screws to loosen the cables from the DC Link card. 3. Remove the 6 screws on the DC coils (3 screws on each coil). 4. Remove the coils. Reinstall in the reverse order. 1. Remove the 6 screws on coil mounting plate. 2. Remove the coil mounting plate. 3. Loosen the 4 screws from the DC Link card. 4.
PAGE 62
H-Frame Size Disassembly a... VLT® HVAC Basic Drive Service Manual 7.3.5 RFI Filter 1. Remove the protection cover. 2. Remove the 6 distance bushes. 3. 7.3.6 Power Card 1. Remove the 3 screws on the U V W cable connector. Remove the 2 screws on the frame side. 2. Remove the connector. 4. Remove the 3 screws from U V W cables. 3. 5. Press the barbs on the side of the filter. Remove the 3 small screws (T10) from the power card. 6. Remove the RFI filter.
PAGE 63
1 7.4 H7 Frame Size Disassembly and Assembly Instructions 2 7.4.1 Control Card and Control Card Mounting Plate 1. Remove the LCP by pressing the barbs on the side. 2. Remove the foil. 3. Remove the 3 screws (T10). 4. Gently, lift off the control card. 5. Press the barb on the LCP ribbon cable and pull it out of the control card mounting plate. 6. Remove the mounting plate. 130BC108.11 VLT® HVAC Basic Drive Service Manual H-Frame Size Disassembly a...
PAGE 64
H-Frame Size Disassembly a... VLT® HVAC Basic Drive Service Manual 7.4.3 Inrush Card 7.4.2 Power Card 1. Remove the LCP ribbon cable from the power card. 2. Unplug all other cables from the power card, including the 3 gate cables at the bottom of the card. 3. Remove the 3 screws (T20) from the mounting plate. 4. Remove the power card by pushing in the 6 retaining clips. NOTE 1. Remove the 2 screws (T20) from the filter shield. 2. Remove the shield. 3.
PAGE 65
VLT® HVAC Basic Drive Service Manual H-Frame Size Disassembly a... 7.4.4 RFI Filter 7.4.5 Relay Transducer Card 1. Remove the red/black cables from the filter cable. 1. Unplug cables on the relay transducer card. 2. Remove the protective foil. 2. 3. Remove the 3 filter cables screws using a hex 8 key. Loosen the right cable connector using a hex 5 key. 3. Open the plastic clamp to remove the cables from the connector. 4. Remove the 2 screws (T20) from the EMC shield. 5.
PAGE 66
VLT® HVAC Basic Drive Service Manual 7.4.6 Rectifier Modules 1 1. Loosen and remove the 2 cables (T20). 2. Remove the 6 screws (T20) from the shield. 3. Remove metal shield and plastic cover. 4. Remove the 2 screws (T20) from each of the rectifier modules. 5. Remove the 3 rectifier modules. 130BC131.11 H-Frame Size Disassembly a... 4 3 2 7.4.7 IGBT 7 7 1. Remove the 4 screws (T20) from the cable connector plate. 2. Remove the cable connector plate. 3. Loosen the coil cables (T20).
PAGE 67
VLT® HVAC Basic Drive Service Manual 7.4.8 Heatsink Fan Assembly 7.4.9 DC Coil 1. Remove the 4 screws (T20) from the fan cover plate. 1. Remove the 4 screws (T20) from the DC coil cover plate. 2. Press the fan cover plate outwards using a screwdriver. 2. Remove the 4 screws (T20) from the heatsink. 3. Remove the heatsink. 3. Remove the fans and the fan cover plate. 4. Remove 4 screws (T20) from each of the 2 DC Coils. 5. Remove the coils. 130BC132.11 Reinstall in the reverse order.
PAGE 68
VLT® HVAC Basic Drive Service Manual H-Frame Size Disassembly a... 7.4.10 Capacitor Bank 1. Remove the foil. 2. Remove the 6 screws on the bottom plate. 3. Remove the bottom plate. 4. Remove the 4 screws (T20) from the capacitor mounting plate. 5. Remove the mounting plate. 6. 7.5 H8 Frame Size Disassembly and Assembly Instructions 7.5.1 Control Card and Control Card Mounting Plate 1. Remove the LCP by pressing the barbs on the side. Turn the capacitor bank upside-down. 2. Remove the foil.
PAGE 69
VLT® HVAC Basic Drive Service Manual 130BC108.11 H-Frame Size Disassembly a... 1 7.5.2 Power Card 2 1. Remove 2 screws (T20) from the EMC shield. 2. Remove cables from EMC shield. 3. Remove the EMC shield. 4. Remove the LCP ribbon cable from the power card. 5. Unplug all other cables from the power card. 6. Remove the 3 screws (T20) from the mounting plate. 7. Remove the power card by pushing in the 6 retaining clips. 3 4 NOTE Use a screwdriver if the retaining clips are hard to reach.
PAGE 70
H-Frame Size Disassembly a... VLT® HVAC Basic Drive Service Manual 7.5.3 Inrush Card 7.5.4 Rectifier Modules CAUTION 1. Remove the 4 screws (T20) from the power card mounting plate. 2. Remove the power card mounting plate. 3. Unplug all cables from the inrush card. 4. Remove the 6 screws (T20) from the inrush card. 1. Remove cables and foil. 5. Remove the inrush card. 2. Remove coil cords (T20). 3. Remove 6 screws (T25). 4. Remove screws in coil cables (T20). 5.
PAGE 71
VLT® HVAC Basic Drive Service Manual 1 2 130BC128.11 H-Frame Size Disassembly a... 7.5.5 RFI Filter 3 4 1. Remove the 3 screws (T20) from the small EMC shield. 2. Remove the EMC shield. 3. Loosen left cable connector using a hex 8 key. 4. Remove the 4 screws (T20) from the filter. 5. Remove the entire filter assembly. 1 2 130BC126.11 Reinstall in the reverse order. 7 7 3 Illustration 7.19 Rectifier Modules 1 Foil 2 Bus bar 3 Plastic cover 4 Rectifier modules Table 7.
PAGE 72
7.5.7 IGBT 7.5.6 Relay Transducer Card 1. Remove the 4 screws (T20) on the plate. 2. Carefully remove cables before removing the plate. 3. Loosen the cables in the right cable connector using a hex 8 key. CAUTION Wear protective gloves when cleaning up the thermal paste as it is poisonous. 1. Remove the 2 screws from the cable retaining guide. 4. Pull out the cables. 5. Remove the 3 screws (T30) on the relay card. 2. Remove the cable retaining guide. 6. Remove the 2 10-pin ribbon cables. 3.
PAGE 73
VLT® HVAC Basic Drive Service Manual 130BC131.11 1 7.5.8 Heatsink Fan Assembly 1. Remove the 4 screws (T20) from the fan cover plate. 2. Press the fan cover plate outwards using a screwdriver. 3. Remove the fans and the fan cover plate. 4 3 2 Reinstall in the reverse order. 130BC132.11 H-Frame Size Disassembly a... 2 1 7 7 Illustration 7.22 IGBT Illustration 7.23 Heatsink Fan Assembly 1 Cable mounting plate 2 IGBT 1 Fan cover 3 Bus bar 2 Fan assembly 4 Capacitor Table 7.23 Table 7.
PAGE 74
VLT® HVAC Basic Drive Service Manual 7.5.10 Capacitor Bank 7.5.9 DC Coil 1. Remove the 4 screws (T20) from the DC coil cover plate. 1. Remove the foil. 2. Remove the 4 screws from the bottom plate. 2. Remove the 4 screws (T20) from the heatsink. 3. Remove the bottom plate. 3. Remove the heatsink. 4. 4. Remove 4 screws (T20) from each of the 2 DC Coils. Remove the 4 screws from the capacitor bank assembly. 5. Remove the assembly. 5. Remove the coils. 6. Turn the assembly upside-down.
PAGE 75
VLT® HVAC Basic Drive Service Manual H-Frame Size Disassembly a... 7.6.2 Power Card Cover 7.6 H10 Frame Size Disassembly and Assembly Instructions 7.6.1 Control Card and Control Card Mounting Plate 1. Press and loosen the 3 barbs at the bottom, and the 3 barbs at the top. 2. Remove the power card cover. 1. Remove the LCP cradle. LCP cradle can be removed by hand. 2. Remove 3 screws (T10) securing the control card mounting plate to the control assembly support bracket. 3.
PAGE 76
VLT® HVAC Basic Drive Service Manual H-Frame Size Disassembly a... 7.6.3 Power Card 7.6.4 Heatsink and DC Coils 1. Remove the 4 screws (T10) for the DC coil cables. 1. Remove the 7 mounting screws from top surface. 2. Remove the 5 screws (T10) for the heatsink. 2. Press and loosen the 3 barbs at the bottom. 3. Remove the 4 IGBT screws (T25). 3. Unplug the DC coil cables. 4. Unplug fan cable connector. 4. Remove the heatsink. 5. Lift out the DC coils.
PAGE 77
H-Frame Size Disassembly a... VLT® HVAC Basic Drive Service Manual 7.6.5 Heatsink Fan Assembly 1. Remove 2 screws (T10) on the DC coil mounting plate 2. Remove the plate. 3. Press and loosen the 2 barbs on the fan. 4. Remove the fan. 130BC107.11 Reinstall in the reverse order. 7 7 1 2 Illustration 7.31 Heatsink Fan Assembly 1 Heatsink fan 2 Fan mounting plate Table 7.
PAGE 78
I-Frame Size Disassembly an... VLT® HVAC Basic Drive Service Manual 1 8.1 General Disassembly Procedure This procedure explains how to remove the outer parts of the frequency converter that are common for all I frame sizes. When this procedure is completed, the inside components are accessible. 2 3 4 8 8 1. Loosen and remove the 4 screws (T20) from the front cover. 2. Remove the front cover. 3. Remove the screw and sheet metal next to the EMC shield. 4.
PAGE 79
I-Frame Size Disassembly an... VLT® HVAC Basic Drive Service Manual 8.2.2 Cable Mounting Plate 8.2.3 Heatsink Fan Assembly 1. Remove the ribbon cable. 1. Unplug cable from power card. 2. Remove 1 screw (T20) from shield metal. 2. 3. Use a flat screwdriver to release the retainers and connection terminals. Remove 2 screws (T20) from the fan mounting plate. 3. Use a hex 4 key to loosen the screws in the cable connector. Push the cable downwards.
PAGE 80
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.2.4 SMPS Card 8.2.5 Bus Bar Unit 1. Remove the 3 black plastic covers. 2. Unplug and remove the fan. 3. 1. Remove the 2 screws from the snubber capacitor on the bus bar unit. Unplug all other cables. 2. Remove the snubber capacitor. 4. Remove the 2 screws (T20) at MK101. 3. 5. Remove the 3 screws (T20) at K103A, K104A, and K105A. Use a Hex 8 key to remove 2 screws from the bus bar unit. 4.
PAGE 81
I-Frame Size Disassembly an... VLT® HVAC Basic Drive Service Manual 8.2.6 Power Card 8.2.7 DC Coil 1. Remove 7 screws (T20) 1. Remove 4 screws (T20) from the coil. 2. Remove 5 screws (T10) on the Power Card. 2. Lift the coil. 3. Lift out the power card. Reinstall in the reverse order. 1 1 130BC065.11 130BC063.11 Reinstall in the reverse order. 8 8 Illustration 8.7 Illustration 8.6 Power Card 1 1 Power card DC coil Table 8.7 Table 8.
PAGE 82
8 8 I-Frame Size Disassembly an... VLT® HVAC Basic Drive Service Manual 8.2.8 RFI Filter 1. Remove 2 screws (T20) from the filter. 2. Lift out the filter. 8.3 I7 Frame Size Disassembly and Assembly Instructions 8.3.1 Control Card and Control Card Mounting Plate 1 Illustration 8.8 1 130BC066.11 Reinstall in the reverse order. 1. Remove 2 screws (T20) from the 2 cover plates. 2. Remove the LCP cradle. 3. Remove 3 screws (T10) from the control card. 4. Remove the control card. 5.
PAGE 83
1 2 130BC059.11 VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.3.2 Power Card 3 4 1. Unplug and remove the LCP ribbon cable. 2. Unplug all other cables from the power card. 3. Remove 3 screws (T20) on the power card. 4. Remove the power card. Reinstall in the reverse order. 1 130BC070.11 5 8 8 Illustration 8.9 Control Card Mounting Plate 1 LCP and cradle 2 Control card and mounting plate 3 EMC shield Illustration 8.10 1 Power card Table 8.10 Table 8.
PAGE 84
VLT® HVAC Basic Drive Service Manual 8.3.3 Power Card Mounting Plate 8.3.4 Inrush Card 1. Remove 4 screws (T20) from the power card mounting plate. 2. Remove the power card mounting plate with the fan attached. 1 Unplug all cables. 2. Remove 6 screws (T20) from the inrush card. 3. Remove the inrush card. Reinstall in the reverse order. 1 130BC071.11 Reinstall in the reverse order. 1. 8 8 Illustration 8.11 1 Power card mounting plate Table 8.11 82 Illustration 8.
PAGE 85
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.3.5 Bus Bar 8.3.6 RFI Filter Unplug and remove the red/black cable. 2. Remove the black plastic cover. 3. Remove 8 screws (T20) from the support bracket. 4. Remove the bus bar assembly. 1 130BC073.11 Reinstall in the reverse order. 1. Unplug the 3 filter cables from the thyristors using a hex 8 key. 2. Loosen the 3 cables from the cable connector using a hex 5 key. 3. Remove 3 screws (T20) from the support bracket. 4.
PAGE 86
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.3.8 Fan 1. Remove the 3 clamps on each side of the 2 cable connectors. 1. Remove 2 screws (T20) on the fan bracket. 2. Remove 2 screws (T20) from the fan. 2. Remove the cable connector with no cables attached. 3. Remove the fan. 3. Remove 3 screws (T20) from the support bracket. 4. Loosen the 3 cables from the relay transducer card. 5. Remove the cable connector with cables and retaining guide attached. 6.
PAGE 87
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.3.9 Terminal Plate 8.3.10 DC Bus Bar Assembly 1. Remove the black plastic cover. 1. Remove 2 screws (T20) from the 2 snubbers. 2. Remove 4 screws (T20) on the cover plate. 2. Remove the snubbers. 3. Remove the terminal plate. 3. Loosen and remove cables from bus bar assembly and DC coil. 4. Remove 6 screws (T20) from the bus bar assembly. 5. Remove the bus bar assembly. Reinstall in the reverse order. 1 130BC080.
PAGE 88
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.3.11 Heatsink Fan Assembly 8.3.12 Capacitor Bank 1. Remove gate cables from IGBTs. 1. 2. Remove 2 screws (T20) from the heatsink fan assembly. Remove 4 screws (T20) from each of the capacitors. 2. Remove the capacitors. Push the fan cable down through the gasket. 4. Carefully press the gasket down with a screwdriver. 5. Remove the fan assembly. Reinstall in the reverse order. 1 130BC350.
PAGE 89
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.3.13 DC Coil 8.3.14 IGBT 1. Remove 5 screws (T20) on the potted coil. 2. Remove the DC coil. 1. Remove 2 screws (T20) from each of the 3 IGBTs. CAUTION 1 The IGBTs and the heatsink have thermal paste on them. Wear protective gloves as the paste is poisonous. 2. Remove all IGBTs. Reinstall in the reverse order. 2 1 130BC083.11 130BC082.11 Reinstall in the reverse order. 8 8 Illustration 8.
PAGE 90
I-Frame Size Disassembly an... VLT® HVAC Basic Drive Service Manual 8.3.15 Thyristor 1. 8.4 I8 Frame Size Disassembly and Assembly Procedure Remove 2 screws (T20) from each of the 3 thyristors. CAUTION 8.4.1 Control Card and Control Card Mounting Plate The thyristors and the heatsink have thermal paste on them. Wear protective gloves as the paste is poisonous. 2. Remove the thyristors. 1 8 8 130BC074.11 Reinstall in the reverse order. 1. Remove 2 screws (T20) from the 2 cover plates. 2.
PAGE 91
1 2 130BC059.11 VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.4.2 Power Card 3 4 1. Unplug and remove the LCP ribbon cable. 2. Unplug all other cables from the power card. 3. Remove 3 screws (T20) on the power card. 4. Remove the power card. Reinstall in the reverse order. 1 130BC070.11 5 8 8 Illustration 8.24 Control Card Mounting Plate 1 LCP and cradle 2 Control card and mounting plate 3 EMC shield Illustration 8.25 1 Power card Table 8.25 Table 8.
PAGE 92
VLT® HVAC Basic Drive Service Manual 8.4.3 Power Card Mounting Plate 8.4.4 Inrush Card 1. Remove 4 screws (T20) from the power card mounting plate. 2. Remove the power card mounting plate with the fan attached. 1 Unplug all cables. 2. Remove 6 screws (T20) from the inrush card. 3. Remove the inrush card. Reinstall in the reverse order. 1 130BC071.11 Reinstall in the reverse order. 1. 8 8 Illustration 8.26 1 Power card mounting plate Table 8.26 90 Illustration 8.
PAGE 93
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.4.5 Bus Bar 8.4.6 RFI Filter 1. Unplug and remove the red/black cable. 2. Remove the black plastic cover. 3. 4. 1. Unplug the 3 filter cables from the thyristors using a hex 8 key. Remove 6 screws (T20) and 2 screws (T30) from the support bracket. 2. Loosen the 3 cables from the cable connector using a hex 5 key. Remove the bus bar assembly. 3. Remove 3 screws (T20) from the support bracket. 4. Remove support bracket.
PAGE 94
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.4.7 Relay Transducer Card 8.4.8 Terminal Plate Remove 2 screws (T20) from each of the 2 cable connectors. 2. Remove the cable connector. 3. Remove 3 screws (T20) from the support bracket. 4. Loosen the 3 cables (T30) from the relay transducer card. 5. Unplug all other cables from the relay transducer card. 6. Remove the 3 screws (T20). 7. Remove the relay transducer card. 1. Remove 4 screws (T20) on the cover plate. 2.
PAGE 95
VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.4.9 DC Bus Bar Assembly 8.4.10 Heatsink Fan Assembly 1. Remove 2 screws (T30) from each of the 2 snubbers. 1. Remove 4 screws (T20) from the heatsink fan assembly. 2. Remove the snubbers. 2. Push the cables down through the gaskets. 3. Loosen and remove the 2 cables from bus bar assembly and DC coil. 3. Carefully press the gaskets down with a screwdriver. 4. Remove 2 screws (T30). 4. Remove the fan assembly. 5.
PAGE 96
8 8 VLT® HVAC Basic Drive Service Manual I-Frame Size Disassembly an... 8.4.11 Capacitor Bank 8.4.12 DC Coil 1. Remove 4 screws (T20) from each of the capacitors. 2. Remove the capacitors. 1. Remove 5 screws (T20) on the potted coil. 2. Remove the DC coil. Reinstall in the reverse order. 1 130BC081.11 1 2 Illustration 8.35 DC Coil Illustration 8.34 Capacitors 1 Capacitors Table 8.34 94 130BC082.11 Reinstall in the reverse order. 1 Bus bar 2 DC coil Table 8.
PAGE 97
I-Frame Size Disassembly an... VLT® HVAC Basic Drive Service Manual 8.4.13 IGBT 1. 8.4.14 Thyristor Remove 4 screws (T20) from each of the 3 IGBTs. 1. CAUTION The UGBTs and the heatsink have thermal paste on them. Wear protective gloves as the paste is poisonous. 2. Remove all IGBTs. Reinstall in the reverse order. Remove 2 screws (T20) from each of the 3 thyristors. CAUTION The thyristors and the heatsink have thermal paste on them. Wear protective gloves as the paste is poisonous. 2.
PAGE 98
VLT® HVAC Basic Drive Service Manual Block Diagrams 9 Block Diagrams 130BC339.10 9.1.1 H6 Frame Size Brake not connected to terminal on FC 101 RFI (variations) MAINS L1 L2 L3 DC /AC Inrush A x3 RFI _ RL 2 x3 A o C RFI _ RL 1 INV GD BR BR FB GD RL 1 UINV_P D-I /O A-I /O UINV_N SAFE _ FB Tmp _VGDS VCX (GX ) 5V VCC (GND) 5V VCC VDD (GND) 24V FAN 1 FFB 1 Imax2 comp. MCP Display control panel ”Internal Communication” Int.
PAGE 99
MG90X202 - VLT® is a registered Danfoss trademark Illustration 9.2 control panel Display LCP MAINS L1 L2 L3 ACP Isol. RS 485 D-I/O A-I/O MCP Control Card RFI _ RL 1 UINV_ N UINV_ P ”Internal supply bus” ”Internal Communication” VDD (GND ) 24V VCC (GND ) 5V VCX (GX ) 5V SMPS x3 AC /DC CAN uC+ EEP Inrush FAN 2 FFB 2 FAN 1 FFB 1 VCC Tmp _VGDS SAFE _ FB Inrush RFI _ RL 2 RL 2 RFI _ RL 1 RL 1 RFI _ RL 2 BR INV GD x3 o C Temp. conv. DC /AC Imax2 comp.
PAGE 100
MAINS MG90X202 - VLT® is a registered Danfoss trademark Illustration 9.3 control panel Display LCP L1 L2 L3 ACP Isol. RS 485 D-I/O A-I/O MCP Control Card RL 2 RL 1 RFI _RL 1 RFI (variations) UINV_N UINV_ P ”Internal supply bus” ”Internal Communication” VDD (GND) 24V E _FAN E _FFB VCC (GND) 5V Tmp _ VGDS SAFE _ FB Inrush RFI _ RL 2 RFI _ RL 1 RL 2 RL 1 FAN FFB CAN uC+ EEP Ext. fans Int. fans Level Shift BR BR FB GD INV GD x3 o C Temp. conv. DC /AC Imax 2 comp.
PAGE 101
MG90X202 - VLT® is a registered Danfoss trademark Illustration 9.4 control panel Display LCP MAINS L1 L2 L3 ACP Isol. RS 485 D-I/O A-I/O MCP Control Card RFI _ RL 1 UINV _ N UINV _ P ”Internal supply bus” ”Internal Communication” VGD +/- 15/UDC -/-5 VDD ( GND ) 24V VCC ( GND) 5V VCX (GX ) 5V SMPS x3 AC/DC CAN uC+ EEP Inrush FAN 1 FFB 1 VCC Tmp_VGDS SAFE _ FB Inrush RFI _ RL 2 RFI _ RL 1 RL 2 RL 1 RFI _ RL 2 Int. fans BR INV GD x3 o C Temp. conv. DC /AC Imax2 comp.
PAGE 102
MG90X202 - VLT® is a registered Danfoss trademark LCP Illustration 9.5 control panel Display L1 L2 L3 RL 1 ACP Isol. RS 485 D-I/O A-I/O RFI _ RL 1 UINV _ N UINV _ P RFI (variations) MCP Control Card RL 2 ”Internal supply bus” ”Internal Communication” VGD +/- 15/UDC-/-5 VDD (GND ) 24V VCC (GND ) 5V VCX ( GX) 5V SMPS x3 AC /DC CAN uC+ EEP Inrush FAN 1 FFB 1 VCC Tmp _ VGDS SAFE _ FB Inrush RFI _ RL 2 RFI _ RL 1 RL 2 RL 1 RFI _ RL 2 Int. fans INV GD x3 o C Temp. conv.
PAGE 103
Index VLT® HVAC Basic Drive Service Manual Index H A Heatsink........ 11, 12, 13, 28, 58, 64, 65, 70, 72, 74, 75, 77, 86, 93, 95 Analog Inputs................................................................................................... 36 Output........................................................................................... 19, 42 Signal............................................................................... 19, 20, 36, 56 Signals................................................
PAGE 104
Index VLT® HVAC Basic Drive Service Manual Relay......................................................... 12, 13, 15, 16, 24, 26, 63, 70 Remote Input.................................................................................. 18, 19 Reset................................................................................................... 37, 39 RFI Relay................................................................................................... 26 RS-485.........................................
PAGE 105
Index VLT® HVAC Basic Drive Service Manual MG90X202 - VLT® is a registered Danfoss trademark 103
PAGE 106
www.danfoss.com/drives 130R0242 MG90X202 *MG90X202* Rev.