Siemens SINAMICS SM150, Operating And Installation Instructions

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3.6.14 Motor-side grounding switch (option L49)
Under the following circumstances, operating modes can occur for which there is the danger
that the motor returns power to the drive:
● Operating mode / variant of the load machine, e.g. drive group with gas turbine
● Type of drive machine, e.g. permanently excited motor
resulting in hazardous voltages.
When the make-proof grounding switch is closed, this option allows motor-driven make-proof
grounding switches that ground the motor-side output voltage to be controlled automatically.
The motor-driven make-proof grounding switches are installed in an additional cabinet.
For safety reasons, the drive controller prevents the make-proof grounding switches from being
switched when voltage is still present. Activation is integrated in the protection and monitoring
sequence of the drive.
3.6.15 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.
The terminal assignment is provided in the circuit diagram of the drive.
3.6.16 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.
3.6.17 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.
3.6.18 EMERGENCY STOP Category 1 (option L60)
Emergency Off, stop category1 (24 VDC) for controlled stop according to IEC60204.
Description
3.6 Description of options
SINAMICS SM150 6SL3845-7NN46-7AA0
Operating Instructions 04/2017
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