SIEMENS
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Siemens CR 1 · 2015
7
SIMOTICS motors for cranes
SIMOTICS SD – Severe Duty motors
1LG4, 1LG6 SH 315 L with external fan
■
Overview
The separately ventilated three-phase motors 1LG4 of shaft
height 315 are especially suitable for use as hoist motors in me-
dium-output drives. The axially mounted external fan means that
the motors can operate for long periods with rated torque at low
speeds, an operating characteristic required, for example, for
the hoisting gear of trestle or assembly cranes.
Encoder mounting
The following encoders can be mounted – between the motor
NDE and the external fan – (HOG 10 DN 1024 I encoders are
installed on cranes):
• HOG 10 D
........
•
HOG 10 D
........
with centrifugal switch FSL
•
HOG 10 D
........
with centrifugal switch ESL (on request)
The connections of the encoder and centrifugal switch (if appli-
cable) are taken to an auxiliary terminal box. As a result, the fan
unit does not need to be disassembled when the encoder
cables are connected on the system.
The table below shows an overview of the available motor out-
puts.
Product range
■
Technical specifications
The maximum permissible field-weakening speed is 2600 rpm
for all the variants listed above.
The following rated voltages are available:
•
400 V 3 AC
•
460 V 3 AC
•
500 V 3 AC
•
690 V 3 AC (special insulation!)
The standard version of the external fan motor is designed for
•
50 Hz 3 AC 220 – 240 V
Δ
/380 – 420 V
*
, 2.0/1.15 A
•
60 Hz 3 AC 440 – 480 V
*
, 1.05 A
Other rated voltages can be ordered with order code
Y81
and
plain text.
We recommend that the external fan motor is ordered with a
standstill heater for outdoor installations. Cables for the external
fan motors must always enter from below. The fan cowl can be
turned accordingly.
The motors are available in types of construction IM B3
and IM B35.
The electrical data of the motors for intermittent duty S3 plus
the relevant planning data can be found in the selection and
ordering data.
The special models normally required for cranes are the only
options listed under "Article number supplements and special
versions". For further options,
see Catalog D 81.1
.
The basic version of the 1LG4 motor without an external fan is
described in Catalog D 81.1.
Motor type
Number
of poles
Winding
utilization factor
Power
Rated
speed
Power
Rated
speed
Power
Rated
speed
50 Hz
50 Hz
69 Hz
69 Hz
87 Hz
87 Hz
S1/kW
rpm
S1/kW
rpm
S1/kW
rpm
1LG4316-6
6
F
117
987
150
1367
181
1726
1LG4317-6
6
F
141
987
180
1367
219
1726
1LG4318-6
6
F
171
987
219
1367
265
1726
1LG4314-6
6
F
214
987
274
1367
332
1726
1LG4316-8
8
F
101
736
129
1022
156
1291
1LG4317-8
8
F
123
736
157
1022
191
1291
1LG4318-8
8
F
148
736
189
1022
229
1291
1LG4314-8
8
F
179
736
229
1022
277
1291
© Siemens AG 2015