Siemens SINAMICS S120 Function Manual page 156

Operating Modes
Notes on commissioning vector motor types
Table 3-14
Parameters
p1082
p1120
p1121
p1135
Permanent-magnet synchronous motors (rotary)
Permanent-magnet synchronous motors are supported that are equipped with a
position encoder.
Typical applications include direct drives with torque motors that can operate at low
speeds thanks to a high torque. In certain applications, these drives can do away
with the need for gear boxes and, in turn, mechanical components that are subject
to wear.
Temperature protection can be implemented by means of a temperature sensor
(KTY/PTC). A KTY temperature sensor is recommended in order to achieve a high
level of torque accuracy.
Warning
!
As soon as the motor starts rotating, voltage is generated. When work is carried
out on the converter, the motor must be properly disconnected If this is not
possible, the motor must be secured by means of a holding brake, for example.
Features
S Field weakening up to approx. 1.2 * rated speed (depending on the supply
voltage of the converter and the motor data; see also "General conditions")
S Flying restart
S Vector speed and torque control
S Vector V/f control for diagnostics
S Motor Identification
S Automatic rotary transducer adjustment (comparison with zero position of
encoder)
S Speed controller optimization (rotating measurement)
S Thermal protection via temperature sensors (PTC/KTY)
3-156
Optional motor data, continued
Description
Maximum rotational speed
Ramp-function generator
ramp-up time
Ramp-function generator
ramp-down time
OFF3 ramp-down time
Note
This value can be less than or
equal to p0322.
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© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition