Electrical connection
8.2 Motor circuit diagram
1FN3 linear motors
486 Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
When operated on IT line systems, a protective device should be provided that switches off
the drive system in the case of a ground fault.
In operation with a grounded external conductor, an isolating transformer with grounded
neutral (secondary side) must be connected between the line supply and the drive system.
This protects the winding insulation from excessive stress.
The circuit diagram of the primary section looks like this:
Figure 8-1 Circuit diagram for primary section
The drive system that feeds a motor comprises an infeed module, a power module and a
control module. For the SINAMICS S120 drive system, these modules are called "Line
Modules", "Motor Modules" and "Control Units". Line Modules can be regulated with
feedback (ALM, Active Line Module), unregulated with feedback (SLM, Smart Line Module),
or unregulated without feedback (BLM, Basic Line Module).
To operate several motors simultaneously on a single drive system, either one Motor Module
per motor or one Motor Module for several motors can be provided, depending on the
application. The appropriate choice of Line Module is primarily determined by the power
consumption of the motors used. Other important related factors are the line voltage,
regenerative feedback, and the DC-link voltage.
The following figures show examples of system integrations with connection of Temp-S and
Temp-F via an SME12x.
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