Siemens ET 757 E Series Instrukcje Operacyjne Strona 92

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Commissioning and optimization (software)
7.3 Commissioning and optimization of the drive application
ET 200pro FC
92 Operating Instructions, 11/2007, A5E01100763B AA
Temperature encoder
Parameters Description (parameters and factory settings in bold) Setting
P0601 = 0
or
P0601 = …
Motor temperature encoder
0: No encoder (→ P0610)
1: PTC thermistor (→ P0604)
2: KTY84 (→ P0604)
P0604 = 130° Motor temperature limit
Enter the alarm limit value of the motor overtemperature protection. The shutdown
temperature (limit) is the value at which the converter will either shut down or I
max
will be
reduced (P0610); this always happens at 10% above the alarm limit value.
P0610 = 2 I2t temperature behavior of the motor
(This defines the behavior of the motor if the temperature has reached the alarm limit value.)
0: No response, alarm only
1: Alarm and reduction of Imax (this results in a reduced output frequency)
2: Alarm and shutdown (F00011)
Temperature calculation without encoder
Temperature calculation without a temperature encoder is possible in all operating modes. In
vector mode the current temperature is determined automatically when the converter is
switched on and the motor is hot. In V/f mode the motor temperature is set to an average
value in this case.
Parameters Description (parameters and factory settings in bold) Setting
P0621 = 1 Motor temperature measurement after restarting
0: No measurement.
1: Temperature measurement upon first power-up after an OFF/ON switching operation?
2: Temperature measurement after each power-up.
P0622 = … Motor remagnetizing time for temperature measurement after ON signal
Length of a measuring cycle time for motor temperature measurement after ON signal
Several measuring cycles are required to increase accuracy. This measuring cycle is pre-
assigned the magnetizing time from the Mot ID (r0384)t.
Setting the frequency setpoint
Parameters Description (parameter name and factory setting in bold) Setting
P1000 = … Selecting the frequency setpoint
0: No master setpoint
6: Fieldbus (P2050 … P02091)
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