Danfoss VLT 2800 - Page 6

4.3 References & Limits
77
4.4 Inputs and Outputs
84
4.5 Special Functions
92
4.6 Enhanced Sleep Mode
101
4.7 Serial communication
106
4.7.1 Protocols 106
4.7.2 Telegram Traffic 106
4.7.3 Telegram Structure 106
4.7.4 Data Character (Byte) 107
4.7.5 Process Words 110
4.7.6 Control Word According to FC Protocol 110
4.7.7 Status Word According to FC Profile 112
4.7.8 Control Word According to Fieldbus Profile 113
4.7.9 Status Word According to Profidrive Protocol 113
4.7.10 Serial Communication Reference 114
4.7.11 Present Output Frequency 115
4.8 Serial Communication Parameters
116
4.9 Technical Functions
123
5 All about VLT 2800
127
5.1 Special Conditions
127
5.1.1 Galvanic Isolation (PELV) 127
5.1.2 Ground Leakage Current and RCD Relays 127
5.1.3 Extreme Operating Conditions 128
5.1.4 dU/dt on Motor 128
5.1.5 Switching on the Input 128
5.1.6 Peak Voltage on Motor 128
5.1.7 Acoustic Noise 129
5.1.8 Derating for Ambient Temperature 129
5.1.9 Temperature-Dependent Switching Frequency 129
5.1.10 Derating for Air Pressure 130
5.1.11 Derating for Running at Low Speed 130
5.1.12 Derating for Long Motor Cables 130
5.1.13 Derating for High Switching Frequency 130
5.1.14 Vibration and Shock 131
5.1.15 Air Humidity 131
5.1.16 UL Standard 131
5.1.17 Efficiency 131
5.1.18 Mains Supply Interference/Harmonics 132
5.1.19 Power Factor 132
5.1.20 Generic EMC Standards / Product Standards 133
Contents Design Guide
4 Danfoss A/S © Rev. May/2014 All rights reserved. MG27E402