Eaton SPI9000 Instrukcja Użytkownika Pobierz pdf (Strona 12)

SPI9000 Inverter Unit FR4 – FR8 User Manual

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For more information visit:

www.EatonElectrical.com

MN04004003E

April 2006

Standard Features of SPI Inverter Units

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DC connection

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Air cooling

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Standard board

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Alphanumeric control panel (in the front of the module)

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Safety CE / UL

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Integrated charging

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I/O modules A1 & A2

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FR4, FR6, FR7: IP21; FR8: IP00

Storage

If the inverter is to be stored before use, make sure that the ambient conditions are

acceptable:

Storage temperature -40 to 158°F (-40 to 70°C)

Relative humidity <95%, no condensation

If the inverter is stored for over 12 months, contact Eaton before connecting the inverter to

the power supply.

Maintenance

In normal conditions, Cutler-Hammer inverters are maintenance-free. However, we

recommend cleaning the heatsink with compressed air whenever necessary. The cooling fan

can easily be changed if required.

It may also be necessary to check the tightening torques of terminals at certain intervals.

Technical Data

Figure 1-1 presents the block diagram of the SPI9000 inverter. The inverter mechanically

consists of two units, the Power Unit and the Control Unit.

The Power Unit contains an inverter bridge which consists of IGBT switches and produces

symmetrical, three-phase PWM-modulated AC voltage to the motor. To protect the DC-link

capacitors, the Power Unit also contains a charging circuit for controlled DC-link charge. Use

the B+ and DC- terminals in order to bypass the charging unit.

The Motor and Application Control Block is based on microprocessor software. The

microprocessor controls the motor based on the information it receives through

measurements, parameter settings, control I/O and the control keypad. The motor and

application control block control the motor control ASIC which, in turn, calculates the IGBT

positions. Gate drivers amplify these signals for driving the IGBT inverter bridge.

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