SWT 3000 Equipment Manual Installation and Commissioning
Special features for the output of the unblocking impulse
The activated unblocking impuls (for more details refer to table 48 on page 52) can be connected
via the IFC-D/P card when using the operation modes 1 and 2. When working with other operation
modes the following system behavior has to be observed:
Stand alone equipment:
In the stand alone equipment an activated unblocking impulse (tunbl>0) in the operation
mode3...5A is executed via the EALR relay on the ALRS module. This means there is no relay left
for the
receiver alarm. The receiver alarm is indicated as general alarm GENALR.
SWT 3000 integrated in the ESB 2000i
In the integrated equipment the unblocking impulse is executed via the PU3f signal output EALR
(X1/b13). In the ESB 2000i system the PU3f line connector is equipped with a relay and the control
logic to operate the IFC compatible unblocking relay mounted in the cabinet.
The
receiver alarm from the iPU3f is furthermore combined with the ESB 2000i alarms and dis-
tributed
via the ALRE module!
Signal position: On the IFC a make contact is always used for the signaling of the unblocking (at
mode 1 and 2). This means unblocking is active when the contact is closed. In case of unblocking
signaling via EALR the active position of the relay has to be considered (an alarm is active when
the relay is de-energized).
SWT 3000 integrated in the PowerLink system
The receive alarm output of the PU3f module (RXALR) can be allocated to the unblocking impulse
in the PowerSys service program (see figure
56 page 64). The RXALR output can be ranked to an
alarm relay (see figure
57 page 65).
In case of unblocking signaling via RXALR and ALRS card the active position of the relay has to
be considered (an alarm is active when the relay is de-energized).
© SIEMENS AG 2008 Edition p3_3_2x 08/09 Page - 63
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