Efficient Networks Siemens Sinamics S120 User Manual

Page 148

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Vector control

4.15 Instructions for commissioning permanent-magnet synchronous motors

Drive Functions

148

Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4

● Motor identification (standstill (static) measurement (p1910)
● Rotating measurement (p1960)
The following parameters can be entered in STARTER during the commissioning phase:
The optional motor data can be entered if it is known. Otherwise, they are estimated using

the rating plate data or are determined using a motor identification routine or speed controller

optimization.

4.15

Instructions for commissioning permanent-magnet synchronous
motors

Equivalent circuit diagram for vector synchronous motor and cable

N

&

5

&DEOH

&DEOH

5

0RWRU0RGXOH

0RWRU

&DEOH

/T

/G

6

7

S

S

S>0@

S>0@

S>0@ S>0@ S>0@

Figure 4-22 Equivalent circuit diagram for synchronous motor (vector)

Permanent-magnet synchronous motors, rotating

Permanent-magnet synchronous motors with or without encoder are supported.
The following encoder types are supported:
● Encoder with position information (e.g. without CD track or reference signal)
● Encoder without position information
For operation without encoders or with encoders without position information, a pole position

identification must be carried out (see the chapter on pole position identification for further

details).
Typical applications include direct drives with torque motors, which are characterized by high

torque at low speeds. When these drives are used, gear units and mechanical parts subject

to wear can be dispensed with if the application allows this.

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