Off Functions; B30, Intervention Option For The Infeed Circuit Breaker Interlocking - Siemens SINAMICS DCM Betriebsanleitung

11.3

OFF functions

11.3.1

B30, intervention option for the infeed circuit breaker interlocking

Category
OFF functions
Available only for systems with rated armature currents >850 A.
Function
An external intervention option (terminals, to integrate an external NC contact) is provided so
that the infeed circuit breaker or main contactor can be externally opened. For instance, this
can be a leading auxiliary switch of a circuit breaker on the line side, so that an overvoltage
occurring when switching off the transformer on the primary side cannot be propagated to
the SINAMICS DCM DC Converter. An EMERGENCY STOP must be simultaneously
issued; terminals are provided as standard for this function. An internally generated
230 V AC control voltage is available at the terminals; an isolated contact should be
externally connected.
Connection
Table 11- 2
Terminal
5
6
Max. connectable cross-section: 2.5 mm²
The cable must be marked with its cable number so that it cannot be lost, the cable number
and the conductor numbers/conductor colors must be documented in the terminal diagram.
Cable routing
The cables are routed into the cabinet corresponding to the following diagrams.
SINAMICS DCM Cabinet
Operating Instructions, 04/2015, A5E36161239/RS-AA/001
Terminal strip -X2 – connection for circuit breaker interlocking
Designation
L1 230V
-
Technical data
NC contact required, contact must be open in
order that the infeed circuit breaker is opened.
Options
11.3 OFF functions
211