Wiring
SIMATIC - EM 300 Motor Starters
2-2
GWA-4NEB 640070302-05
2.1
Rules for Wiring
Warning
Dangerous high voltage! Take care to avoid electric shock and injuries from
burns. Always deenergize the system and the device before carrying out any
work.
Selecting the motor connecting cables
The core cross section of the motor connecting cables must match the given
environmental conditions. The cross section is governed by:
• the nominal current set on the unit,
• the method of cable laying,
• the ambient temperature,
• the insulation material of the motor connecting cable (PVC, rubber).
For PVC motor connecting cables laid in cable ducts, the following maximum
current carrying capacities apply according to environment temperature:
Wiring power connectors
The rules and procedure for wiring the power connectors apply both to the
electromechanical (
EM 300 DS/RS
) and the electronic motor starter
(EM 300
EDS/ERS). Observe the following rules when wiring the power plug:
T
env
=
30 °C
40 °C
45 °C
50 °C
55 °C
4 x 1.5 mm
2
14 A
12.2 A
11.1 A
9.9 A
8.5 A
4 x 2.5 mm
2
19 A
16.5 A
15.0 A
13.5 A
11.6 A
4 x 4.0 mm
2
26 A
22.6 A
20.5 A
18.5 A
15.9 A
Rules for flexible conductors
Data
Current carrying capacity of the connection depending on the
connected core cross-section and the environment tempera-
ture
at T
env
55 °C
40 °C
1.5
mm
2
2.5 mm
2
4.0 mm
2
12 A
20 A
30 A
15 A
25 A
35 A
Permissible outside diameter of cable
Sealing insert
green
red
white
7.0 ... 10.5 mm
9.0 ... 13.0 mm
11.5 ... 15.5 mm
Bared length of cores
8 mm
Bared length of cable sheath
20 mm
Summary of Contents for SIMATIC EM 300
Page 40: ...Commissioning SIMATIC EM 300 Motor Starters 3 12 GWA 4NEB 640070302 05 ...
Page 46: ...Hand held Controller SIMATIC EM 300 Motor Starters 4 6 GWA 4NEB 640070302 05 ...
Page 58: ...SIGUARD Safety Integrated SIMATIC EM 300 Motor Starters 6 4 GWA 4NEB 640070302 05 ...
Page 64: ...Dimension Drawings SIMATIC EM 300 Motor Starters B 2 GWA 4NEB 640070302 05 ...
Page 70: ...Selection Help SIMATIC EM 300 Motor Starters D 4 GWA 4NEB 640070302 05 ...
Page 72: ...SIMATIC EM 300 Motor Starters Index 2 GWA 4NEB 640070302 05 ...
Page 74: ...GWA 4NEB 640070302 05 ...
