Sevcon Gen4 - Page 5

Doc. # 177/52701
Rev. 3.3
iii
Isolation .............................................................................................................................. 4-6
EMC ................................................................................................................................... 4-7
Regulatory compliance ...................................................................................................... 4-7
Mechanical ................................................................................ 4-8
Operating environment ...................................................................................................... 4-8
Shock and vibration ........................................................................................................... 4-8
Controller weight ................................................................................................................ 4-8
Dimensions ........................................................................................................................ 4-9
Size 2 models .................................................................................................................... 4-9
Size 4 models .................................................................................................................... 4-9
Size 6 models ..................................................................................................................4-10
Chapter 5: System design 5-1
Sizing a motor ........................................................................... 5-2
Information required about the application ........................................................................ 5-2
Motor maximum speed ...................................................................................................... 5-2
Torque required between zero and base speed ................................................................ 5-2
Torque required at maximum speed .................................................................................. 5-3
Continuous power rating .................................................................................................... 5-3
Peak power rating .............................................................................................................. 5-4
Selecting the correct Gen4 model ............................................. 5-4
Current and power ratings considerations ......................................................................... 5-4
Power output restrictions at motor and drive operating temperature limits ....................... 5-4
Circuit configuration ........................................................................................................... 5-5
Single traction wiring diagram............................................................................................ 5-6
Single pump wiring diagram .............................................................................................. 5-7
Twin motor systems ................................................................... 5-8
Auxiliary components ................................................................ 5-8
Main contactor ................................................................................................................... 5-8
35 Way AMPSeal Connector Kit ........................................................................................ 5-8
Emergency stop switch ...................................................................................................... 5-8
On-board fuse .................................................................................................................... 5-9
Key switch fuse F2 ...........................................................................................................5-11
Motor speed sensor (encoder) ........................................................................................5-11