Name: Danfoss VLT CDS 803
Brand: Danfoss
Rating: 4 (1 reviews)

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Table of Contents3
Introduction7
Purpose of this Design Guide7
Additional Resources7
Supplementary Documentation7
VLT® Motion Control Tool MCT 10 Software Support7
Manual and Software Version7
Approvals and Certifications7
Safety9
Safety Symbols9
Qualified Personnel9
Safety Precautions9
Product Overview11
VLT® Compressor Drive CDS 803 Family Overview11
VLT® Compressor Drive CDS 803 Features12
Compressor Features12
Secure Start-Up12
Compressor Minimum Speed Detection13
Short-Cycle Protection14
Anti-Reverse Protection14
Oil Return Management15
Data Readouts and Commissioning15
Undersized Compressor16
Application Features16
Automatic Motor Adaptation (AMA)16
Motor Thermal Protection16
Built-In PID Controller17
Automatic Restart17
Flying Start17
Frequency Bypass17
Motor Preheat17
Programmable Set-Ups18
Smart Logic Control (SLC)18
Comparators19
Logic Rules19
VLT® Compressor Drive CDS 803 Protections19
Mains Input Protection19
Mains Supply Failure, Momentary Dropouts, and Surges19
Missing Mains Phase Detection20
Output Protection20
Short-Circuit Protection (Phase-To-Phase)20
Ground Fault Protection (Output Phase-To-Ground)20
Locked Rotor Detection20
Output Phase Loss Detection20
Overload Protection20
Temperature Protection21
Minimum and Maximum Temperature Protection21
Automatic Temperature Derating21
Temperature-Controlled Fans21
Internal Protection21
DC Overvoltage Protection21
Internal Faults21
Ecodesign for Power Drive Systems21
Losses in Mains Cabling23
Input Filters: Line Reactors and Harmonic Filters23
Drive, Input Side24
DC Link24
Drive, Output Side25
Motor Cables and Motor26
Specifications27
Electrical Data27
Electrical Data 3X200-240 V AC27
Electrical Data 3X380-480 V AC27
Mains Supply (L1, L2, L3)28
Compressor Output (U, V, W)28
Control Input/Output29
DC Output29
Analog Inputs29
Analog Outputs29
Digital Inputs29
Digital Outputs30
Relay Outputs, Enclosure Sizes30
Relay Outputs, Enclosure Size H630
RS485 Serial Communication31
Ambient Conditions31
Conforming Standards32
Cable Lengths and Cross-Sections32
Acoustic Noise32
Mechanical Dimensions33
Drive Dimensions33
Shipping Dimensions34
Du/Dt34
Mechanical Installation Considerations36
Safe Transportation and Storage36
Reforming the Capacitors36
Side-By-Side Installation37
Operating Environment37
Gases38
Dust38
Air Humidity39
Vibration and Shock39
Derating for Ambient Temperature and Switching Frequency39
Derating Curves, 6.0, 7.5, and 10 Kw39
Derating Curves, 18.5-22 Kw40
Derating Curves, 30 Kw40
Derating for Low Air Pressure and High Altitudes41
IP21/NEMA Type 1 Enclosure Kit41
Acoustic Noise or Vibration43
Recommended Disposal43
Electrical Installation Considerations45
Electrical Installation in General45
Fastener Torque Ratings45
Fuses and Circuit Breakers45
Recommendation of Fuses and Circuit Breakers45
Electrical Wiring46
Wiring Schematic46
Terminal Overview of Enclosure Sizes47
Terminal Overview of Enclosure Size H648
Connecting to Mains and Compressor Terminals48
Grid Installations49
Relay Terminals49
Control Terminals50
Setting up RS485 Serial Communication51
Electromagnetic Compatibility52
EMC Emission Test Results53
Emission Requirements53
Immunity Requirements54
EMC Compatibility56
EMC-Compliant Electrical Installation57
EMC-Compliant Cables59
Shielded Control Cables60
RFI Filter Switch61
Harmonics Emission61
Harmonics Emission Requirements62
Harmonics Test Results (Emission)62
Galvanic Isolation (PELV)63
Ground Leakage Current63
Using a Residual Current Device (RCD)65
How to Order67
Drive Configurator67
Type Code Description67
Accessories and Spare Parts68
Appendix69
Abbreviations69
Conventions69

Brand	Danfoss
Model	VLT CDS 803
Category	DC Drives
Language	English

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