Connecting; Circuit Diagram; Terminal Designation; Laying Cables - Siemens SIMOTICS M-1PH8 Operating Instructions & Installation Instructions

6.3

Connecting

Depending on the version, different terminal boxes may be installed on the machine.
Dependent on the terminal box, different cable entries and options for the cable connection
are possible. You can identify the terminal box installed on the machine via the illustrations in
the following chapters.
6.3.1

Circuit diagram

Data on the connection and connecting the motor winding can be found in the circuit diagram
in the cover of the terminal box.
6.3.2

Terminal designation

With the terminal designations according to IEC / EN 60034‑8, the following definitions apply
to three-phase machines:
Table 6-1
1
x
6.3.3

Laying cables

● For explosion-proof machines use certified versions of cable glands and cable or lead
● For fixed cables use EMC screwed cable glands. Screw the EMC cable glands into the
● Arrange the exposed connecting cables in the terminal box such that the PE conductor has
SIMOTICS M-1PH8
Operating Instructions 05/2012 A5E03986435A AA
Terminal designations using the 1U1-1 as an example
U 1 - 1 Designation
Index for pole assignment on pole-changing motors where applicable. A lower
index signifies a lower speed. Special case for split winding.
x Phase designation U, V, W
x Index for winding start (1) or end (2) or if there is more than one connection per
winding
x Additional indices for cases in which it is obligatory to connect parallel power feed
cables to several terminals with otherwise identical designations
inlets. The cable glands are not included in the scope of supply. For loose cables, use
twist-protection cable glands with strain relief.
threaded holes of the screw-off entry plate.
excess length and the insulation of the cable strands cannot be damaged.
Electrical connection
6.3 Connecting
59