I” i““ b, I” c, 6 toshiba – Toshiba VF-SX User Manual

Page 139

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13-6

TOSHIBA

Figure 13.4

Frequency Setting Characteristics

of the RR Terminal

The parameters

[ i” i““ b ]

and

[ i” C ]

affect the output frequency from the

drive to the motor as mathematically determined by the following equation:

OUTPUT FREQUENCY -

([f~H]/m) X

{Frequency Setting Voltage + ([Tr'—b

]-128)/10.56}

{(3/4)

(l+([rr—C]/256)}.

If all parameters are set to the factory default settings, and the frequency

setting voltage is 50* of the maximum (“Frequency Setting Voltage" in the

equation above is equal to "50"), the the output frequency is 39.5 Hz.