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INTRODUCTION

MICROMASTER

MICROMASTER Vector

MIDIMASTER Vector

SIEMENS DA 64 – 2002/2003

Version D 1/2

1. INTRODUCTION

The MICROMASTER, MICROMASTER Vector and

MIDIMASTER Vector drive inverters use state-of-the-art

IGBT power semiconductors and represent the result of

years of experience in the area of drive inverter

development.

A complete series extending from 120 W to 75 kW or up to

90 kW for applications with square-law load characteristics is

available. They operate, as standard using the high-

performance sensorless vector control. This offers the user

the benefits of high torque and dynamic performance across

a broad range of applications.

A parallel range of MICROMASTER drives from 120 W to 7.5

kW is especially suitable for driving basic machines.

COMBIMASTER (refer to Section 8) combines motor and

inverter in one compact unit and is one of our top-of-the-line

variable-speed drive products.

A high degree of user friendliness, an excellent

price/performance ratio, compact dimensions are just some

of the features of this product series. Furthermore, this series

fulfills the highest quality and reliability standards worldwide.

1.1 Product overview

MICROMASTER, MICROMASTER Vector and

MIDIMASTER Vector have been designed for use worldwide

and are suitable for a wide range of supply voltages:

1/3 phase 208 - 240 V AC ±10%

3 phase 380 - 500 V AC ±10%

3 phase 525 - 575 V AC ±15% (only MIDIMASTER

Vector)

Comment:

However, the following should be noted for this voltage data:

- The drive inverter operating range is between the two

specified voltage values - from e.g. 208 - 240V

- The specified ±10% is not an operating range, it

represents a range for brief voltage fluctuations.

Two operational characteristics are provided in these drive

series:

- MICROMASTER Vector and MIDIMASTER Vector offer

high performance, sensorless vector control for a high

torque at low speeds as well as excellent dynamic

characteristics in operation. This is the reason that these

drives can even be used in sophisticated applications, for

example, elevators, cranes and industrial washing

machines.

- MICROMASTER has, as standard, a V/Hz control and is

especially suitable for basic applications such as pumps

and fans.

- Both of these drive types also profit from a PID controller

which is integrated as standard (PI for MICROMASTER)

for the closed-loop control.

- Furthermore, all of the products have the same user-

friendly standard interface with seven keys and an LED

display.

- User-friendly screwless terminals are used to connect the

control wiring.

- Up to 31 drives can be connected to a PLC or PC system

through a standard serial RS485 interface.

- A drive can be enabled via the keyboard, a digital input or

the standard serial RS485 interface.

- The setpoint for the motor speed can either be selected

via a digital setpoint, a motorized potentiometer, a fixed

frequency, an analog input or the serial link.

- Mixed mode control is also available, allowing drive

control and setpoint inputs to be from different sources.

- An integrated DC current brake allowing DC voltage to be

output, even when the motor is stationary.

- The drives can be parameterized so that they

automatically restarted after a power failure or a fault.

- The parameter sets of the various product types are

completely compatible, so that the training time is

reduced to a minimum.

- All of the drives are certified in accordance with VDE, UL

and UL Canada and have been manufactured in

compliance with the ISO9001 Standard.

- All of the drives conform to the requirements of the

European Low-Voltage Directive 73/23/EC and have the

CE Mark.

- The drive inverters do not process any date-related

information and were therefore not influenced by the year

2000 issues.

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Siemens EK 726 Series Manual de servicio Pagina 8

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