Terminal Marking; Protruding Connection Cables - Siemens SIMOTICS SD Operating Instructions Manual
Low-voltage motors
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- Operating instructions manual (136 pages) ,
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Electrical connection
6.2 Connecting the machine
Terminal connec‐
tion
Terminal connec‐
tion
Direction of rotation of the motor when viewing the DE
6.2.2.3
Terminal marking
According to IEC / EN 60034‑8, the following basic definitions apply to the terminal markings for
3-phase machines:
Table 6-1
1
x
It is possible to turn the top side of a machine terminal box 4 x 90 degrees (if screwed on).
6.2.2.4
Protruding connection cables
Risk of short-circuit and voltage hazard
A short circuit can occur if connecting cables are clamped and crushed between parts of the
enclosure and the cover plate.
This can result in death, severe injury and material damage.
• During disassembly and particularly when installing the cover plate, make sure that the
68
Clockwise ro‐
tation
Counter-clock‐
wise rotation
Terminal markings using the 1U1-1 as an example
U
1
-
1 Marking
Code for split winding, where applicable. Special case for pole assignment for pole-
changing machines.
A lower index signifies a lower speed.
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 markings
WARNING
connecting cables are not clamped between enclosure parts and the cover plate.
U V W
V U W
1LE5, 1PC4 shaft heights 280 ... 355
Operating Instructions, 11/2022, A5E41454666A
T1 T2 T3
T2 T1 T3
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