8
05.01
8.2 Infeed modules
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©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
8.2
Infeed modules
8.2.1
Connecting several NE modules to a main switch
A maximum of six terminals 48 can be connected in parallel with one another in
order to shut down a maximum of six NE modules with one leading contact of
the main switch.
Maximum cable length with a 1.5 mm
2
cross–section: 150 m (2–wire conductor)
Connection diagram:
19
9
48
NE module Drives
19
9
48
NE module Drives
19
9
48
NE module Drives
Main
switches
Leading
contact
1)
1)
Other devices
1)
Terminal 9 may not be connected to terminal 48.
Fig. 8-2
Connection schematic, several NE modules connected to terminal 48
If enable signal terminals, e.g. terminal 663, are connected in parallel to terminal
48, then the number of NE modules must be appropriately reduced due to the
higher current load connected to terminal 9.
Note
If the internal power supply at NE module 1 fails, then the remaining NE
modules and drives that are connected are also inhibited. The drives ”coast
down” unbraked.
As an alternative to the limited current capability of the internal power supply via
terminal 9, the enable voltage can be taken from an external 24 V PELV power
supply.
In this case, the terminals 19 of the NE modules must be connected to the 0 V
reference potential (ground) of the external power supply.
8 Important Circuit Information
