Specifications

2.7.23 Secondary Pumps 29
2.7.24 The VLT Solution 29
2.8 Control Structures
30
2.8.1 Control Principle 30
2.8.2 Control Structure Open Loop 31
2.8.3 PM/EC+ Motor Control 31
2.8.4 Local (Hand On) and Remote (Auto On) Control 31
2.8.5 Control Structure Closed Loop 33
2.8.6 Feedback Handling 33
2.8.7 Feedback Conversion 34
2.8.8 Reference Handling 34
2.8.9 Example of Closed Loop PID Control 36
2.8.10 Programming Order 37
2.8.11 Tuning the Closed Loop Controller 38
2.8.12 Manual PID Adjustment 38
2.9 General aspects of EMC
39
2.9.1 General Aspects of EMC Emissions 39
2.9.2 Emission Requirements 40
2.9.3 EMC Test Results (Emission) 41
2.9.4 General Aspects of Harmonics Emission 42
2.9.5 Harmonics Emission Requirements 42
2.9.6 Harmonics Test Results (Emission) 42
2.9.7 Immunity Requirements 43
2.10 Galvanic Isolation (PELV)
44
2.11 Earth Leakage Current
44
2.12 Brake Function
45
2.12.1 Brake Resistor Selection 45
2.12.2 Brake Resistor Calculation 46
2.12.3 Control with Brake Function 46
2.12.4 Brake Resistor Cabling 47
2.13 Extreme Running Conditions
47
3 Selection
50
3.1 Options and Accessories
50
3.1.1 General Purpose Input Output Module MCB 101 50
3.1.2 Digital Inputs - Terminal X30/1-4 50
3.1.3 Analog Voltage Inputs - Terminal X30/10-12 51
3.1.4 Digital Outputs - Terminal X30/5-7 51
3.1.5 Analog Outputs - Terminal X30/5+8 51
3.1.6 Relay Option MCB 105 51
3.1.7 24 V Back-Up Option MCB 107 (Option D) 52
Contents VLT® HVAC Drive FC 102 Design Guide
2 MG16C102 - Rev. 2013-08-20