Connection examples 55
Use of internal PID-controller - closed loop process control 57
Programming
59
Operation & Display 59
Setup configuration 59
Load and Motor 67
DC Braking 72
References & Limits 77
Handling of references 77
Reference function 81
Inputs and outputs 85
Special functions 95
PID functions 98
Handling of feedback 99
Enhanced Sleep Mode 106
Serial communication for VLT 2800 111
Control Word according to FC protocol 115
Status Word according to FC Profile 117
Control word according to Fieldbus Profile 118
Status word according to Profidrive protocol 119
Serial communication 122
Technical functions 130
All about VLT 2800
134
Special conditions 134
Galvanic Isolation (PELV) 134
Earth leakage current and RCD relays 134
Extreme operating conditions 134
dU/dt on motor 135
Switching on the input 135
Acoustic noise 135
Temperature-dependent switch frequency 136
Derating for air pressure 136
Derating for running at low speed 136
Derating for long motor cables 136
Derating for high switching frequency - VLT 2800 136
Vibration and shock 137
Air humidity 137
UL Standard 137
Efficiency 137
Mains supply interference/harmonics 138
Power factor 138
Generic EMC standards/product standards 139
EMC emission 139
EMC Immunity 140
Harmonic Current Emission 141
Aggressive environments 141
Display readout 143
2 MG.27.E2.02 - VLT is a registered Danfoss trademark
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