1 Overview Issue 07/04
MICROMASTER 420 Operating Instructions
18 6SE6400-5AA00-0BP0
1.1 The MICROMASTER 420
The MICROMASTER 420s are a range of frequency inverters for controlling the
speed of three phase AC motors. The various models available range from the
120 W single-phase input to the 11 kW three-phase input.
The inverters are microprocessor-controlled and use state-of-the-art Insulated Gate
BipoIar Transistor (IGBT) technology. This makes them reliable and versatile. A
special pulse-width modulation method with selectable Pulse frequency permits
quiet motor operation. Comprehensive protective functions provide excellent
inverter and motor protection.
The MICROMASTER 420 with its default factory settings, is ideal for a large range
of simple motor control applications. The MICROMASTER 420 can also be used
for more advanced motor control applications via its comprehensive parameter
lists.
The MICROMASTER 420 can be used in both 'stand-alone' applications as well as
being integrated into 'Automation Systems'.
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