Project Planning for Drives Project planning sequence

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4.3Project planning sequence 1

Example The following flow diagram illustrates the project planning procedure for a positioningdrive. The drive consists of a gearmotor that is powered by an professional inverter.

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Necessary information on the machine to be driven –Technical data and environmental conditions–Positioning accuracy–Speed setting range (rotational accuracy)–Calculating the travel cycle

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↓ Calculate the relevant application data

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–Static, dynamic, regenerative power–Speeds–Torque ratings –Travel diagram

4

↓

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Gear unit selection –Definition of gear unit size, gear unit reduction ratio and gear unit type–Check the positioning accuracy –Check the gear unit utilization (M

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a max ≥ M
a (t) ) ↓

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System selection depending on –Positioning accuracy–Setting range–Control

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↓

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Inverter operation –Voltage-controlled inverter without and with speed control–Voltage-controlled, vector-controlled inverter without and with speed control–Current-controlled, vector-controlled inverter

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↓

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Motor selection –Maximum torque–For particularly low output speeds: Limit motor power according to M
a max of the gear unit–For dynamic drives: Effective torque at medium speed–Maximum speed–For dynamic drives: Torque curves–Thermal load (setting range, cyclic duration factor) –Selection of the correct encoder–Motor equipment (brake, plug connector supplier, TF temperature monitoring, etc.)

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↓

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Selecting brakes –Determine braking torque–Determine working capacity–Determine brake size–Select brake control

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↓

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Catalog – DR Gearmotors 01/2008

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