Digital Acoustics ESBx-110 Spezifikationen PDF herunterladen (Seite 23)

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101

Introduction and General Information

ADDvantage-32 PLUS ● AC to DC Power Converter

1-16

1.2.7 FIELD CONTROLLER BASE ASSEMBLY (AFMs and 540, 850, 1550, and 3000 ADC

Power Converters)

The FIELD CONTROLLER BASE ASSEMBLY is used on power converters rated 540,

850, 1550, and 3000 ADC as well as all AFMs. It contains the field supply components

and the control electronics that operate the entire motor drive. (See Figure 1-10.) Heat

generated by the field SCR's is dissipated by the heat sink contained in the base

assembly. The base includes the Shunt Field Supply, fuses, bridge interface board and

microprocessor board.

Shunt Field Supply

The SHUNT FIELD SUPPLY is a single phase thyristor/diode bridge which controls the

excitation current to the motor's shunt wound field.

The AC supply comes from the 3-phase main supply. AC line fuses protect the converter

against overcurrents caused by shorts.

Fusing (Refer to Section VII, Table 7-10, for fuse replacement information.)

Fuses contained in the field controller base assembly include: Field Supply AC line (F3,

F4), Control Power Transformer Primary (rejection type) (F1, F2), Board Power (F5),

Contactor Coil (F6), Cooling Blower (F7), and Auxiliary Power (F8). Fuses F1, F2, F6,

and F7 are sized according to the external equipment that is being utilized with the

ADDvantage-32 PLUS (i.e., contactors, control transformers, relays, etc.). These fuses

must be supplied by the user or are provided in the optional auxiliary hardware kit which

is available in addition to the standard DC motor drive.

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