L57, Emergency Off Category 0 For Uncontrolled Stopping In Accordance With En - Siemens SINAMICS DCM Betriebsanleitung

Options
11.3 OFF functions
11.3.2 L57, EMERGENCY OFF Category 0 for uncontrolled stopping in accordance
with EN 60204-1
Category
OFF functions
Function
This function allows the energy feed for the converter to be interrupted (armature circuit and
field circuit) via the main contactor or via the circuit breaker, bypassing the microprocessor
controller of the drive using a safety relay. The motor current is interrupted and the motor
coasts down. It must be ensured that this type of switch off does not represent any danger.
3TK2827 and 3TK2830 safety relays are used with a 24 V DC supply voltage.
When pressing the EMERGENCY OFF button, the E-STOP function (terminals XS1-105, -
106) is triggered at the drive. The armature current is reduced to zero and the firing pulses
are inhibited. At the same time, the armature contactor and the field contactor are directly
opened via the 3TK2830 expansion device. The time delay that can be adjusted at the
3TK2827 is not active.
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Operating Instructions, 04/2015, A5E36161239/RS-AA/001
SINAMICS DCM Cabinet