Description, technical data
2.3 Converter assignment
A5E01083943A AB
Siemens AG Operating Instructions 2.02 1FW4
25
2.3 Converter assignment
Description
The 1FW4-series motors are designed for operation with SINAMICS converters and have
been type-tested with these converters. As far as the SINAMICS motor modules are
concerned, special control software has been developed for 1FW4-motors. The selection of
the converter module depends on many influencing factors, e.g., torque, speed, overload,
load cycles, control precision, regenerative capability, etc. You can find more detailed
information in Catalog "HT-direct 1FW4". For more complex questions, contact your
Siemens sales representative.
CAUTION
No liability
No liability is assumed in respect of damage to the motor or converter and no warranty is
issued in respect of drive function if you use a 1FW4 motor in conjunction with a different
converter.
[ID 820.01]
2.4 Motor design
Overview
The 1FW4-series motors are 3-phase-synchronous motors of enclosed design with an
internal cooling air circuit. The fan impeller for the inner cooling air flow is mounted on the
motor shaft. Sensors are installed in the stator winding for monitoring the temperature. In
accordance with the options ordered, various supplementary devices can be installed or
attached, e.g., anti-condensation heating, additional temperature sensors or bearing
vibration monitoring. The 1FW4-series motors are available with:
● An external fan, cooling type IC416 as per IEC/EN 60034-6
● Water-cooling, cooling type IC71W as per IEC/EN 60034-6
The water-cooled motors have two water connections. The water used must be selected
in accordance with the manufacturer's data and the configuring data. You can find
information on the required water quality in Chapter "Water Cooling" in the "Water
Quality" section.
CAUTION
Damage to the water-cooling circuit
Anti-freeze must be added to the cooling water for operation in ambient temperatures
below 0°C! Damage may be caused to the water cooling circuit if the cooling water
freezes.
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