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02.98
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Siemens AG 1998 All Rights reserved 6SN1197–0AA00 02.98 Edition
SIMODRIVE 611 (PJ)
Connecting the start inhibit
The start inhibit is controlled in the drive modules via terminal 663, and in the
controlled infeed modules, via terminal 112. The start inhibit relay is controlled
using the internal/external enable voltage 24 V (enable terminal 9; ena-
ble signal –terminal 19). When the relay has dropped–out (terminal 663 open),
the start inhibit relay activates the start inhibit function.
Terminal 663 (drive) and 112 (NE) must be energized using a fail–safe signal.
AS1/AS2 closed, means that the ”start inhibit is effective”.
Terminals AS1 and AS2 signal, floating, the start inhibit status.
!
Warning
The start inhibit relay has maximum pull–in– and drop–out delay times of
max. 40 ms. External wiring must be connected to the terminals AS1/AS2
so that it is short–circuit proof and cross–circuit proof.
When using the internal power contactor (e. g. in the infeed module) the cable
connection between the connecting terminals and the power contactor must be
direct, but reliably electrically isolated from the electronics, to ensure that there
is no feedback.
Use, mode of operation and connection of the line contactor
The infeed modules have a standard line contactor, integrated in the module
itself. These contactors are dimensioned to be able to conduct and disconnect
the maximum permissible peak current of the infeed module. The line contac-
tors are electronically controlled via terminal 48. For safe, reliable electrical iso-
lation, the coil power supply must be interrupted in the direct line contactor coil
circuit, accessible externally (via terminals NS1 and NS2) using electro–mecha-
nical switching elements. Thus, the influence of the electronic control has no
effect when the unit is disconnected with electrical isolation. The line contactor
must always be de–energized via terminal 48 before or at the same time that
the NS1/NS2 connection is interrupted.
When the line contactor is opened, there is still residual energy in the DC link
which must be taken into account in the risk evaluation.
9.5.3 Connecting the start inhibit
Содержание SIMODRIVE 611A
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