SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890
133
2 Parameters
2.2 List of parameters
Notice:
For p0621 = 1, 2:
The determined stator temperature of the induction motor can only be compared with the measured value of a
temperature sensor (KTY/PT1000) to a certain extent, as the sensor is usually the warmest point of the stator
winding, whereas the measured value of identification reflects the mean value of the stator winding.
Furthermore this is a short-time measurement with limited accuracy that is performed during the magnetizing phase
of the induction motor.
Note:
For p0621 = 1, 2:
The measurement is carried out
- For induction motors
- When vector control is active (see p1300)
- if a temperature sensor (KTY/PT1000) has not been connected
- When the motor is at a standstill when switched on
When a flying restart is performed on a rotating motor, the temperatures of the thermal motor model are set to a third
of the overtemperatures. This occurs only once, however, when the CU is booted (e.g. after a power failure).
If identification is activated, the magnetizing time is determined via p0622 and not via p0346. Quick magnetizing
(p1401.6) is de-energized internally and alarm A07416 is displayed. The speed is enabled after completion of the
measurement.
For p0621 = 3:
The measurement is carried out
- for synchronous motors (permanent magnet)
- When vector control is active (see p1300)
- When the motor is at a standstill when switched on
When identification is activated, the ramp-up time of the current setpoint is defined by p0622 (limited to p0346). The
speed is enabled after the measurement has been completed. After the measurement, p0621 is reset and the result
is saved in p0352.
Description:
For p0621 = 1, 2:
Sets the excitation time of the motor for the stator resistance identification after switching on again (restart).
For p0621 = 3:
Ramp time of the current setpoint rise when measuring the cable resistance once only.
Dependency:
Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Refer to: p0621, r0623
Note:
For p0621= 1, 2 and p0622 < p0346, the following applies:
If identification is activated, the magnetizing time is influenced by p0622. The speed is enabled after measurement is
complete, but not before the time in p0346 has elapsed (see r0056 bit 4). The time taken for measurement also
depends on the settling time of the measured current.
For p0621= 1, 2 and p0622 >= p0346, the following applies:
Parameter p0622 is internally limited to the magnetizing time p0346, so that p0346 represents the maximum possible
magnetizing time during identification. The entire measurement period (magnetizing plus measurement settling time
plus measuring time) will always be greater than p0346.
p0621= 3:
Parameter p0622 is internally limited to the magnetizing time p0346. The speed is enabled after measurement has
been completed, but not before the time in p0346 has elapsed.
p0622[0...n]
Motor excitation time for Rs_ident after switching on again / t_excit Rs_id
Access level:
3
Calculated:
p0340 = 1,3
Data type:
FloatingPoint32
Can be changed:
C(3), U, T
Scaling:
-
Dyn. index:
MDS, p0130
Unit group:
-
Unit selection:
-
Func. diagram:
-
Min Max
Factory
setting
0.000 [s]
20.000 [s]
0.000 [s]
Содержание SINAMICS G120
Страница 1: ...SINAMICS SINAMICS G120 CU250S 2 Control Units List Manual 09 2017 Edition www siemens com drives ...
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Страница 726: ...2 Parameters 2 6 Quick commissioning p0010 1 SINAMICS G120 CU250S 2 Control Units 726 List Manual 09 2017 A5E33842890 ...
Страница 990: ...3 Function diagrams 3 26 Data sets SINAMICS G120 CU250S 2 Control Units 990 List Manual 09 2017 A5E33842890 ...
Страница 1242: ...A Appendix A 2 List of abbreviations SINAMICS G120 CU250S 2 Control Units 1242 List Manual 09 2017 A5E33842890 ...
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