Rpm/Engineering Units - Seco DS9000 Installation & Operation Manual

_120
200
_____ = _0.6 = 0.8
_225 0.75
300
Again we could have used RPMs or the input frequency to calculate the ratio.
675 RPM
1125 RPM
___________ =
1350 RPM
1800 RPM
4.2

RPM/Engineering Units

There are three dedicated parameters that will be programmed for follower mode operation in
addition to those programmed as a master speed controller.
FEd1 – Maximum input frequency of reference motor feedback divided by 30.
SCF1 – Readout value desired at maximum reference signal input
SCd1 – Decimal point location for SCF1
To calculate the values to program into each parameter, follower these instructions.
FEd0* - Max. frequency of controlled motor feedback (Hz)
FEd1* - Max. frequency of master reference (Hz)
SCF0 – Enter number to be displayed at maximum controlled motor input frequency
(max. speed)
SCd0 – Decimal point location for number to be displayed as specified by SCF0 for controlled
motor readout.
*For FEd0 or FEd1, if the number calculated is less than 30, enter 30 and if the number is greater
than 600, enter 600.
SCF1 – Enter number to be displayed at maximum reference signal input frequency (max.
speed).
SCd1 – Decimal point location for number to be displayed as specified by SCF1 for reference
signal readout.
34
1350 Hz
2250 Hz
_________ = _0.6 = 0.8
1350 Hz 0.75
1800 Hz
30
30