MDC Manual 1109KB - Red Lion Controls

PROGRAM SCALING MENU
The Program Scaling Menu is used to scale the MDC to the specific motor
(or shaft) feedback transducer output. This Menu also scales the speed in
RPM to the Display units which are seen on the display and used for speed
setpoint entry.
The following flowchart shows only the Scaling portion:
-17-
PPR FB (Pulses Per Revolution- Feedback)
Enter the number of pulses per revolution generated by the feedback
transducer. The value for PPR FB ranges from 1 to 59999.
MAX RPM FB (Maximum RPM- Feedback)
Enter the maximum RPM for the feedback input transducer. This is the
maximum normal operating speed (in RPM) of the motor (or shaft) which is
generating the feedback signal. The value ranges from 1 to 59999.
Note: If the Maximum Equivalent Frequency exceeds 20971 Hz, “OVFLW”
flashes over the numeric value and a new entry is required.
Maximum Equivalent Frequency =
PPR x MAX RPM
60
DSP DP (Display Decimal Point)
Select the display decimal point position. Press SEL and use the DN arrow
key to select the decimal point position. The decimal point position is a place
holder only and does not affect scaling. The available options are:
0
0.0
0.00
0.000
0.0000
0.00000
DSP UNIT (Maximum Display Units)
Enter the value to be displayed when the motor (or shaft) is running at the
speed entered for MAX RPM FB. This value is also the maximum allowable
speed setpoint. The value ranges from 1 to 99999.