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KEB COMBIVERT F5-M / S
6
Name: Basis
12.05.04
Chapter
Section
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Date
©
KEB Antriebstechnik, 2002
All Rights reserved
Functional Desription
Setpoint- and Ramp Adjustment
Ref. value (high-resolution) = 100 * 80 * 150994/ 2^14 = 73727/ 2^16 = 1,124985
This corresponds to 0,0140625 Hz.
In case of a resolution of 0.0125 Hz, 0.0250 Hz must be given out in each eight
cycle, in order to reach the reference value
Dec. place of the reference value = Remain of the reference value/ 2^16 = 8191
The overflow when integrating the decimal place can be determined as follows, in
order to reach the mean value.
Number of cycles up to the overflow = 2^16/ decimal places = 8,00098
The following displayed values results of:
ru.82 (ramp output) = 150992
converted in Hz:
Ramp output (Hz) = ru.82 * oP.64./ 2^30 = 0,0140622 Hz
ru.83 (actual value) = 134217 and in each eight cycle 268434
converted in Hz:
Actual value = ru.83 * oP.64/ 2^30 = 0,0125 Hz
in each eight cycle 0,025 Hz
Setting ranges are faded out with this function, in order to avoid resonances. The
target is pass through with the ramp. The setpoint value is always adjusted to the
upper or lower limit of the target.
Parameter:
oP.65
min. proh. reference 1
oP.66
max. proh. reference 1
oP.67
min proh. reference 2
oP.68
max. proh. reference 2
The parameters are not programmable.
Fade out target for setpoint value
The adjusted values are accepted still as setpoint value, so that the function is not
active in case that lower and upper limit have the same value. If a higher value is
selected for the lower limit than for the upper limit, the function is also not active.