Fairford Electronics QFE Series, Manual

Page: 28 / 194

QFE
page 2-3
Electrical Installation
FD8413 issue03_F
2 Electrical Installation 2-5
2.1 Warnings 2-5
2.1.1 Isolation ................................................................................................ 2-5
2.1.2 Electrical Control Supply Requirements ............................................... 2-5
2.1.3 Access .................................................................................................. 2-5
2.1.4 Fuse Protection .................................................................................... 2-5
2.2 Electrical Connections 2-6
2.2.1 Electrical Supplies ................................................................................ 2-6
2.2.2 Control, Power and Earth Terminations ................................................ 2-6
2.3 Standard Wiring Configurations 2-7
2.3.1 Wiring Diagram for In-line Connection of Motors .................................. 2-7
2.3.2 Wiring Diagram for In-Delta Connection of Motors ............................... 2-8
2.4 Motor Control Circuits 2-9
2.4.1 Bypass Control ..................................................................................... 2-9
2.4.2 Multiple Motor Starting & Stopping ..................................................... 2-10
2.4.3 External Motor Protection Relay ......................................................... 2-10
2.4.4 Motor Reversing ................................................................................. 2-10
2.4.5 Connection of an External Current Transformer ................................. 2-10
2.4.6 Wiring diagram for Motor Reversing ................................................... 2-11
2.5 Electrical Connections 2-12
2.5.1 Chassis Size1 and 2 ........................................................................... 2-12
2.5.2 Chassis Size 3 .................................................................................... 2-13
2.5.3 Electronic Control Card ...................................................................... 2-14
2.5.4 Auxiliary Function Card ...................................................................... 2-15
2.6 Supply Connections 2-16
2.6.1 Electrical Supply ................................................................................. 2-16
2.6.2 Motor Connections ............................................................................. 2-16
2.6.3 Control Supply .................................................................................... 2-16
2.7 Control Card Connections 2-17
2.7.1 Control Inputs ..................................................................................... 2-17
2.7.2 Auxiliary function Card Inputs - plus models only ............................... 2-17
2.7.3 Control Outputs - All models ............................................................... 2-18
2.7.4 Auxiliary function card Outputs - plus models only ............................. 2-18
2.9 Typical Motor Powers at rated voltages 2-20
2.9.1 Chassis size1 motor powers ................................................................... 2-20
2.9.2 Chassis size2 motor powers ................................................................... 2-20
2.9.3 Chassis size3 motor powers ................................................................... 2-21
2.9.4 Chassis size4 motor powers ................................................................... 2-21
2.10 Fuse and Current Ratings 2-22
2.10.1 Full-Load, Current Limit and Short-Circuit Protection ......................... 2-22
2.10.2 External Fuse Requirements .............................................................. 2-22
2.10.3 Overload Current Profile and Duty Cycle AC-53a .............................. 2-23
2.10.4 Overload Current Profile AC-53B ....................................................... 2-24
2.10.5 Overcurrent Trip Graph ....................................................................... 2-25