Rockwell-automation SD3000 Drive Configuration, Programming Manuale Utente Scaricare il pdf (Pagina 109)

Appendix I

Instantaneous Overcurrent Trip Point

The instantaneous overcurrent (IOC) trip point is a function of the maximum current limit value and the

motor’s armature current as shown in the following equation:

IOC Trip Point

= Armature Amps x (Max Current Limit + 75%)

When the maximum current limit value is equal to

150%,

the upper limit of the IOC trip point is set at 225% of

the motor’s armature current value. The parameter entry screen will display an error message if the IOC trip

point is greater than 225% of the Power Module’s D-C Amps current rating. Refer to section 4.2.1 of this

manual for more information.

I-1

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Rockwell-automation SD3000 Drive Configuration, Programming Manuale Utente Pagina 109