Circuit Breaker At The Drive Output (Option L52); Uninterruptible Power Supply (Ups) (Option L53); Anti-Condensation Heating (Option L55); Emergency Stop Category 1 (Option L60) - Siemens Sinamics GM150 6SL3835-2LN44-2AA0 Operating And Installation Instructions

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.
3.6.22

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.
3.6.23

Uninterruptible power supply (UPS) (option L53)

The uninterruptible power supply (UPS) ensures that the control system continues to run
because the line voltage is protected. The following conditions must be met in order that the
drive can continue to operate:
● The DC-link voltage does not undershoot the U
● The medium-voltage switch does not switch off because of undervoltage.
If kinetic buffering is activated, drives with large moments of inertia can bridge voltage brown-
outs or short power failures. The kinetic buffering supports the DC-link voltage.
3.6.24

Anti-condensation heating (option L55)

The anti-condensation heating is used at low ambient temperatures and high levels of humidity
to prevent condensation from forming. The heating is controlled via a thermostat.
The number of anti-condensation heaters is set in accordance with the number of cabinet
panels.
The converter monitors and signals if the external supply for the anti-condensation heating fails.
See also
Safety instructions for maintenance (Page 175)
3.6.25

EMERGENCY STOP Category 1 (option L60)

Emergency Off, stop category1 (24 VDC) for controlled stop according to IEC60204.
In the standard version, Emergency Off stop category 0 is set for an uncontrolled stop. It also
has a function for disconnecting the drive from the power supply via the circuit-breaker. The
motor coasts down. The Emergency Off, stop category 1 function includes rapid stopping of the
drive using a deceleration ramp to be parameterized by the user. Voltage is then disconnected
from the drive as described for Emergency Off, stop category 0.
SINAMICS GM150 6SL3835-2LN44-2AA0
Operating Instructions Rev.201910281250 MUSTER
3.6 Description of options
limit
d min
Description
55