Siemens SINAMICS S120 Equipment Manual page 375

Features
Option L34 is completely pre-wired. It is controlled using a built-in TM31 Terminal Module.
To control option L34, the parameterization settings specified in chapter "Electrical
installation" must be made during commissioning.
Note
After setting the parameters, the user must ensure that the switch is operating correctly.
For this reason, the output-side breaker is automatically controlled via the converter.
To close the output-side breaker, the following conditions must be fulfilled:
● There must be no faults on the Motor Module.
● There must be no OFF command active on the Motor Module.
● The Motor Module must receive an ON command.
● Pre-charging of the Motor Module must be complete.
The output-side breaker is opened under the following conditions:
● There is an active fault on the Motor Module.
● The power supply on the auxiliary voltage system for option L34 (230 V AC/24 V DC)
● The local "OFF" button on the output-side breaker is pressed.
If they are available, remote off switches (for optional use by customers) for disconnecting
the output-side breaker must be connected accordingly via the undervoltage coil.
The user should note and monitor the permissible number of switching cycles specified for
the output-side breaker. Once the permissible number of switching cycles has been
reached, it is imperative that breaker maintenance be carried out. Otherwise, it can no
longer be guaranteed that the breaker will function properly in the event of a fault.
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A
Note
The "ON" button, located directly on the output-side breaker, has no function. The
breaker can be closed only via the Motor Module.
fails.
Note
Pressing the "OFF" button directly on the output-side breaker will switch the Motor
Module off (pulse suppression). The converter will not display a fault. The breaker can be
closed again only by sending a new ON command via the Motor Module.
Note
To reduce the number of switching cycles, the output-side breaker will not open if the
Motor Module receives an "OFF" command (OFF1, OFF2, OFF3).
WARNING
8.19 L34, output-side circuit breaker
Options
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