Mounting and options
3.5 Thermal motor protection
SIMOTICS S-1FT2 synchronous motors for SINAMICS S120
Operating Instructions, 07/2021, A5E50610821B AB
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3.5
Thermal motor protection
To protect the motor from overheating, a thermal motor model is implemented in the
SINAMICS S120 converter.
When the motor is operated within the permissible ambient temperature range and the
ambient temperature is correctly set in the converter, the converter protects the motor from
overheating.
Before the motor reaches the maximum temperature, the converter outputs the warning
"Motor overtemperature".
When the motor exceeds the maximum temperature, the converter switches off the motor
with the error message "Motor overtemperature".
When the ambient temperature exceeds 40 °C, you must adapt the ambient temperature in
the thermal motor model. In this case, the thermal protection routine requires the ambient
temperature specified in parameter p0613. For more details about parameter p0613, see
"SINAMICS S120 List Manual".
3.6
Encoder
Motors with DRIVE-CLiQ interface are designed to operate with the SINAMICS converter
system.
Signal transmission to the converter is performed digitally.
The motors have an electronic rating plate that simplifies commissioning and diagnostics.
The motor and encoder system are automatically identified and all motor parameters are
automatically set.
You will find further information in the relevant SINAMICS manual.
NOTICE
Damage to electrostatic sensitive devices
The contacts of the DRIVE-CLiQ interface have direct contact with components that can be
destroyed by electrostatic discharge (ESDS).
• Avoid touching the terminals directly with hands or tools. They may be electrostatically
charged and damage components.
The encoders are suitable for the Extended Safety Functions.
