Terminal Marking; Protruding Connection Cables - Siemens SIMOTICS SD 1LE5 Operating Instructions Manual

Electrical connection
6.2 Connecting the machine
• If you interchange 2 connections, e.g. L1, L2, L3 at V, U, W or according to NEMA at
T2 T1 T3, then the machine rotates counterclockwise.
Line feeder cables
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
64
Direction of
rotation
-
Clockwise
rotation
Counter-
clockwise
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.
According to IEC
L1 L2 L3
U V W
V U W
Operating Instructions, 10/2020, A5E41454666A
According to NEMA
L1 L2 L3
T1 T2 T3
T2 T1 T3
1LE5, 1PC4 shaft height 315/355