Danfoss VLT series Service Manual

Figure Title Page
Exploded View D1 Frame Size .................................................................................................Intro-4
Exploded View D2 Frame Size .................................................................................................Intro-5
Exploded View E Frame Size ...................................................................................................Intro-6
1-1. Control Terminals ......................................................................................................................... 1-8
1-2. Control Terminals Electrical Diagram ............................................................................................1-10
1-3. Grounding Shielded Cables ......................................................................................................... 1-11
2-1. Control Card Logic ....................................................................................................................... 2-1
2-2. Logic Section ................................................................................................................................ 2-1
2-3. Typical Power Section .................................................................................................................. 2-3
2-4. Rectifier Circuit ............................................................................................................................. 2-5
2-5. Intermediate Section ..................................................................................................................... 2-7
2-6. Output Voltage and Wave Forms ................................................................................................... 2-8
2-7. Inverter Section ............................................................................................................................ 2-9
2-8. Brake Operation .......................................................................................................................... 2-10
4-1. Adjustable Frequency Drive Functionality Diagram ....................................................................... 4-5
4-2. Ground Currents .......................................................................................................................... 4-6
4-3. Signal Conductor Currents ........................................................................................................... 4-6
4-4. Alternate Signal Conductor Currents ............................................................................................. 4-7
4-5. Proper ECM Installation ................................................................................................................ 4-8
5-1. Interface PCA and Power PCA Connector Identification ................................................................. 5-2
5-2. Soft Charge Card Fuses .............................................................................................................. 5-3
5-3. Soft Charge Card Connectors ...................................................................................................... 5-5
5-4. Soft Charge Card Fuse Location .................................................................................................. 5-6
5-5. Soft Charge Card Connectors ...................................................................................................... 5-8
5-6. Fan Transformer and Fuse Location ........................................................................................... 5-11
5-7. Fan and DC Bus Fuse Locations ................................................................................................ 5-12
5-8. Drive Power Terminals (D-size Frames) .....................................................................................5-13
5-9. Normal AC Input Voltage Waveform ............................................................................................. 5-17
5-10. AC Input Current Waveform with Diode Bridge............................................................................. 5-17
5-11. Input Current Waveform with Phase Loss .....................................................................................5-18
5-12. SCR Gate Signal .........................................................................................................................5-19
5-13. Gate Drive Card Test Connectors ................................................................................................5-21
5-14. Gate Signal Waveform from Gate Drive Card ............................................................................... 5-22
5-15. Gate Signal Waveform from Signal Test Board .............................................................................. 5-23
5-16. Control Card Test Connections .................................................................................................... 5-28
6-1. Control Card Cassette .................................................................................................................. 6-1
6-2. Interface Card, Power Card, and Mounting Plate .......................................................................... 6-2
6-3. Gate Drive Card........................................................................................................................... 6-3
6-4. Soft Charge Card Assy ................................................................................................................. 6-3
6-5. D2 Upper and Lower Capacitor Bank Assemblies ......................................................................... 6-4
6-6. D1 Single Capacitor Bank Assembly ............................................................................................. 6-5
6-7. D2 Soft Charge Resistor ............................................................................................................... 6-6
6-8. D1 Soft Charge Resistor ............................................................................................................... 6-7
6-9. Input Terminal Mounting Plate Assy ..............................................................................................6-10
6-10. D2 SCR/Diode Module ............................................................................................................... 6-11
6-11. D1 SCR/Diode Module ...............................................................................................................6-15
List of Figures
vi

Danfoss VLT series Specifications

General

Series	VLT
Category	DC Drives
Output Voltage	0-100% of input voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Overtemperature, Short Circuit, Ground Fault
Communication Interfaces	Profibus, CANopen
Enclosure Rating	IP20, IP21, IP55, IP66
Cooling Method	Forced Air Cooling, Convection Cooling
Control Mode	Sensorless Vector, Closed Loop Vector
Ambient Temperature	-10°C to +50°C (14°F to 122°F)