Automationdirect.com Stellar SR44, User Manual

Page: 44 / 238

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(Table of Contents continued from previous page)
3.2 – Rules for Specific Applications . . . . . . . . . . . . . . . . . . 3–5
3.2.1 – In-Delta Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2.2 – High-Inertia Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–5
3.2.3 – Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2.4 – Resistive Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2.5 – Frequent Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2.6 – Optimizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2.7 – Soft Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.2.8 – Reversing Drives and Plug-braking . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.2.9 – Replacement of Fluid Couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.2.10 – Two-speed Motor Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.2.11 – Multiple Motor Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.2.12 – Overhauling Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.2.13 – Application Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.3 – Concepts and Principles of Fixed-Speed
Induction Motor Starting and Control . . . . . . . . . . . .3–8
3.3.1 – Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8
3.3.2 – The Induction Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–8
3.3.3 – Starting Induction Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–10
3.3.4 – Electro-Mechanical Methods Of Starting . . . . . . . . . . . . . . . . . . . . .3–11
3.3.5 – The Semiconductor Motor Controller . . . . . . . . . . . . . . . . . . . . . . . 3–12
3.3.6 – Running Induction Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.3.7 – Reliability Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14
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