Technical data

Connection examples 57
Use of internal PID-controller - closed loop process control 59
Programming
61
Operation & Display 61
Setup configuration 62
Load and Motor 69
DC Braking 74
References & Limits 80
Handling of references 81
Reference function 84
Inputs and outputs 88
Special functions 98
PID functions 101
Handling of feedback 102
Enhanced Sleep Mode 110
Serial communication for VLT 2800 115
Control Word according to FC protocol 119
Status Word according to FC Profile 121
Control word according to Fieldbus Profile 122
Status word according to Profidrive protocol 123
Serial communication 126
Technical functions 134
All about VLT 2800
139
Special conditions 139
Galvanic Isolation (PELV) 139
Earth leakage currentand RCD relays 139
Extreme operating conditions 139
dU/dt on motor 140
Switching on the input 140
Peak voltage on motor 140
Acoustic noise 141
Temperature-dependent switch frequency 142
Derating for air pressure 142
Derating for running at low speed 142
Derating for long motor cables 142
Derating for high switching frequency - VLT 2800 142
Vibration and shock 143
Air humidity 143
UL Standard 143
Efficiency 143
Mains supply interference/harmonics 144
Power factor 144
Generic EMC standards/product standards 145
EMC emission 145
EMC Immunity 146
Harmonic Current Emission 147
Aggressive environments 147
VLT
®
2800 Series
2 MG.27.E3.02 - VLT
®
is a registered Danfoss trademark