Efficient Networks Siemens Sinamics S120 User Manual

Page 74

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Servo control

3.5 Torque setpoint limitation

Drive Functions

74

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

Example: Torque limits with or without offset

The signals selected via p1522 and p1523 include the torque limits parameterized via p1520

and p1521.

S

S

S

S

0BRIIVHW!

0

S

S

0BRIIVHW 

0

S

S

Figure 3-9

Example: Torque limits with or without offset

Activating the torque limits

1. Use parameters to select the torque limitation source.
2. Use a control word to specify the torque limitation mode.
3. The following can also be carried out if necessary:

– Select and activate additional limitations.
– Set the torque offset.

Examples

● Traversing to fixed stop
● Tension control for continuous goods conveyors and winders

Function diagrams (see SINAMICS S List Manual)

● 5610 Torque limiting/reduction/interpolator
● 5620 Motor/generator torque limit
● 5630 Upper/lower torque limit
● 5640 Mode changeover, power/current limiting

Parameterization

The "torque limit" parameter screen is selected via the following icon in the toolbar of the

STARTER commissioning tool:

Figure 3-10 STARTER icon for "torque limit"

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