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Programming D-148

890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D

Parameter Descriptions

OUTPUT

PREF: 91.10

Default: —.xx %

Range: —.xx %

Diagnostic on the output of the function block in %

OUTPUT HZ

PREF: 91.11

Default: —.x Hz

Range: —.x Hz

Diagnostic on the output of the function block in Hz

INPUT HZ

PREF: 91.12

Default: —.x Hz

Range: —.x Hz

Diagnostic on the input of the function block in Hz

Functional Description

Four programmable skip frequencies are available to avoid resonances within the mechanical system. Enter the value of

frequency that causes the resonance using the “FREQUENCY” parameter and then programme the width of the skip band

using its “BAND” parameter. The Drive will then avoid sustained operation within the forbidden band as shown in the

diagram. The skip frequencies are symmetrical and thus work in forward and reverse.

Note Setting the FREQUENCY to 0 disables the corresponding band. Setting the BAND to 0 causes the value of BAND 1

to be used for this band.

Parker ac890 User Manual

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