When the medium voltage is restored after a power failure, this is detected by the open-loop/
closed-loop controllers via voltage transformers when the input-side circuit breaker has
dropped out. The voltage transformers should be located at the medium-voltage level upstream
of the circuit breaker.
For safety reasons, a time limit between the power failure and the maximum permissible power
restoration time is incorporated to ensure that the drive does not restart in an uncontrolled
manner. As a further warning, an acoustic signal is output when the drive restarts.
You can find further information on the Voltage Sensing Module (VSM10) in Section
"Description of the Components".
3.6.16
Cabinet illumination and service socket in closed-loop control unit (option L50)
One universal light with service socket is installed in each cabinet element for the trigger and
control section. The universal light and the power socket are supplied externally with power and
must be fused with max. 16 A.
The cabinet illumination can be switched on manually or automatically by means of an
integrated motion detector (default setting). If the light is switched on by the motion detector, it
stays on for three minutes. The mode is selected via the switch on the light.
3.6.17
Disconnector at the drive output (option L51)
With this option, a motor-operated isolator is integrated at the drive output.
If manual isolation between the drive output and drive motor is required for protection and
safety reasons, this can be achieved by means of the motor-operated isolator.
3.6.18
Circuit breaker at the drive output (option L52)
With this option, a circuit-breaker is integrated at the drive output. If isolation between the drive
output and drive motor is required for protection and safety reasons, this can be achieved by
means of the circuit-breaker. The circuit-breaker is controlled from the drive controller. When
an ON command is issued, the output-side circuit-breaker is activated along with the auxiliary
equipment. When an OFF command is issued, the circuit-breaker is deactivated.
CAUTION
Material damage after a full short-circuit trip of the circuit breaker
If, after a short-circuit trip, the circuit breaker is closed again without first checking it, the drive
or the circuit breaker can be subsequently damaged.
● Before reclosing the circuit breaker, carry out a voltage check and measure the resistance.
Provide the results of these measurements to the Service & Support organization. After the
Service & Support organization have checked the values, if necessary replace the vacuum
tubes of the circuit breaker.
Description
3.6 Description of options
SINAMICS SM150 6SL3815-7NP41-0AA1
Operating Instructions Rev.201910281301 EXAMPLE
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