Motor components, characteristics and options
4.1 Motor components
SIMOTICS M-1FE1 synchronous built-in motors
52
Configuration Manual, 09/2019, A5E47872980B AA
4.1.1.1
Thermal motor protection with temperature sensors (standard protection)
The stator laminated core has 2 Pt1000 temperature sensors to monitor the winding
temperature; one of these is a reserve.
Note
When the motor is operated at its rated power, the winding temperature can reach
approx. 150 °C.
The winding has thermal class 155 (F) and is dimensioned for this operating state.
The type of temperature sensor installed is stamped on the rating plate.
The temperature sensor protects the motor from overload when operational.
The temperature sensor detects the motor temperature. The drive system evaluates the
motor temperature. An external tripping unit is not required. The PTC thermistor function
is monitored.
1.
Pre-alarm temperature (default setting for the 1FE1)
If the pre-alarm temperature of 150 °C is exceeded, the drive system issues an
appropriate alarm signal. This alarm signal must be evaluated externally.
The alarm signal is cleared when the motor temperature decreases to below the pre-
alarm temperature.
If the pre-alarm temperature is exceeded for longer than 240 seconds (standard
setting) or longer than the parameterized time, then an alarm signal is issued and the
drive is shut down.
A detailed description is provided in the SINAMICS S120/S150 List Manual.
SINAMICS S120_150 List Manual
https://support.industry.siemens.com/cs/products?search=Listenhandbuch&dtp=M
anual&mfn=ps&o=DefaultRankingDesc&pnid=13204&lc=de-WW
2.
Motor temperature limit (standard setting for the 1FE1)
If the motor temperature limit of 160 °C ±5 °C is exceeded, the drive system is
shut down and it issues an appropriate fault signal.
Table 4- 1 Features and technical data
Type
Pt1000
Resistance when cold (20 °C)
Approx. 1090
Ω
Resistance when hot (100 °C)
Approx. 1390
Ω
Connection
Via signal cable
Response temperature (standard setting for
SINAMICS S120)
Pre-alarm at 150 °C
Trip/shutdown at 160 °C ±5 °C
The resistance change is proportional to the winding temperature change. The
temperature characteristic is taken into account in the closed-loop control.
The following diagram shows the resistance characteristic as a function of the
temperature for Pt1000 temperature sensors.
Содержание Simotics M-1FE1 Series
Страница 1: ...SIMOTICS M 1FE1 synchronous built in motors ...
Страница 2: ......
Страница 12: ...Table of contents SIMOTICS M 1FE1 synchronous built in motors 10 Configuration Manual 09 2019 A5E47872980B AA ...
Страница 22: ......
Страница 46: ......
Страница 52: ......
Страница 78: ......
Страница 82: ......
Страница 146: ...List of abbreviations SIMOTICS M 1FE1 synchronous built in motors 144 Configuration Manual 09 2019 A5E47872980B AA ...
Страница 149: ......
Страница 150: ......