Seco DS9000 Installation & Operation Manual page 54

SCF0 – Sets the scale factor for CONTROLLED MOTOR speed, displayed on readout in TACH mode
with DipSW 5 ON.
SCF0 allows the display to show units other than motor RPM is desired. For example, Feet/Minute
may be displayed for a conveyor, or Gallons/Hour for a pump. It is set by entering the desired readout
when full input signal is applied. SCF0 units are displayed when DipSW 5 is ON.
SCd0 – Places a decimal point in the display when in TACH mode.
SCd0 may be set to 0, 1, 2, or 3, corresponding to the number of places from the right-hand side. It
can be used for increased display resolution when SCf0 is set to a low number. For example, if 0-10
volts corresponds to 0-1 foot/minute, SCd0 should be set to 3, to move a decimal point to three places
from the right, giving a display of 0.000 to 1.000.
FEd1 – Sets the MAXIMUM FREQUENCY of the reference signal.
FEd1 should be set to the FREQUENCY of the reference that will correspond to full motor speed,
divided by 30.
SCF1 – Sets the scale factor for the REFERENCE signal, displayed on readout in TACH mode with
DipSW 5 OFF.
SCF1 refers to the ANALOG REFERENCE signal.
SCd1 – Places a decimal point on the display when in TACH mode.
SCd1 may be set to 0, 1, 2, or 3, corresponding to the number of places from the right-hand side. It
can be used for increased display resolution when SCF1 is set to a low number. For example, if 0-10
volts corresponds to 0-1 foot/minute. SCd1 should be set to 3, to move a decimal point to three places
from the right, giving a display of 0.000 to 1.000.
An example of operation in this mode:
Input Frequency reference is taken from a 60 PPR Magnetic Pickup on a motor. The motor runs from
900 to 1800 RPM.
Set FEd1 to 60, ((1800 RPM x 60 PPR)/60)/30
Set SCF1 to 1800. (Max FREQUENCY)
The CONTROLLED MOTOR also has a 60 PPR Magnetic Pickup mounted on it. It's maximum speed
will be 1800 RPM.
Set FEd0 to 60.
Set SCF1 to 1800.
You would like the CONTROLLED MOTOR to run at 90% to 100% of the reference motor's speed,
depending on the amplitude of the analog input signal.
Set LO to 0.9000
Set HI to 1.000.
In REF mode, the display will show the ratio, as set by the analog input signal. In TACH mode, with
DipSW 5 OFF, the speed of the REFERENCE motor will be displayed, in RPM. In TACH mode, with
DipSW 5 ON, the speed of the CONTROLLED motor will be displayed, in RPM.
NOTE: In this operating mode, the UP and DOWN arrow keys have no effect, except in PROG mode.
This is because both the reference and ratio values are coming from external signals.
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