Simotics M Compact Asynchronous Motors; Simotics Ht Series Ht-Direct 1Fw4 Synchronous Motors With Permanent Magnets - Siemens SINAMICS G130 Engineering Manual

11.6

SIMOTICS M compact asynchronous motors

In addition to the standard and trans-standard asynchronous motors, forced-cooled compact asynchronous motors
from the SIMOTICS M series are also suitable choices (type 1PL6 (with open-circuit ventilation), type 1PH7 (with
surface cooling) and type 1PH8 (surface cooling or water cooling)). These are recommended for applications with
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a large speed setting range and high maximum speeds and / or
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restricted mounting space.
Motor types 1PL6 / 1PH7 / 1PH8 are on average one to two shaft heights smaller for the same rated output than
comparable standard asynchronous motors. The high utilization of these motors requires a pulse frequency setting of
at least 2 kHz in order to minimize the stray losses in the motor caused by converter-fed operation (1PH8 with shaft
heights 80 to 160: 4 kHz; 1PH8 with shaft heights 180 to 280: 2 kHz; 1PH8 with shaft height 355: 2.5 kHz). For more
information, please refer to catalog PM 21 / chapter "SIMOTICS Main Motors". With SINAMICS Chassis and cabinet
units which have low factory settings of 1.25 kHz or 2.0 kHz, it is therefore generally necessary to raise the pulse
frequency, taking into account the current derating factors stated in the chapters on specific unit types.
SIMOTICS M series 1PL6 / 1PH7 / 1PH8 compact asynchronous motors
For motors operating on SINAMICS G130 Chassis units and SINAMICS G150 converter cabinet units, speed
encoder evaluation can be provided only by an SMC30 module, i.e. only incremental encoders (TTL and HTL
encoders) can be used with these converter types.
For motors operating on SINAMICS S150 converter cabinet units and SINAMICS S120 Motor Modules, speed
encoder evaluation can be provided by all the available SINAMICS SMC modules (SMC10, SMC20 and SMC30)
which means that any type of encoder can be used.
11.7

SIMOTICS HT series HT-direct 1FW4 synchronous motors with permanent magnets

In addition to three-phase asynchronous motors, three-phase synchronous motors SIMOTICS HT series HT-direct
1FW4 are available as air-cooled or water-cooled high-torque, permanent-magnet motors for operation on
SINAMICS G and SINAMICS S converters.
These high-torque, permanent-magnet motors are especially recommended for applications which require
1FW4 permanent-magnet synchronous motors, air-cooled and water-cooled
The motors require a pulse frequency setting of at least 2.5 kHz in order to minimize the stray losses caused by
converter-fed operation and thus also prevent the temperature rise in the permanent magnets in the rotor. For further
information please refer to catalog D86.2 Three-Phase Synchronous Motors HT-direct 1FW4. With respect to
SINAMICS Chassis and cabinet units with a factory setting of 1.25 kHz or 2.0 kHz, the pulse frequency must
therefore be raised, taking into account the relevant current derating factors.
Engineering Information
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combined with
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SINAMICS Engineering Manual – November 2015
Motors
high torques,
low speeds,
and low-maintenance operation
a compact design,
and high availability
high efficiency,
rugged design,
and quiet operation.
525/528
Ó Siemens AG