CONTREX ML-Drive - Manual (Page 12)

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EXAMPLES OF ML-DRIVE
APPLICATIONS
Figure 1-1 is an example of a Master mode of operation for a pump application. The
scaling format allows the operator to enter a setpoint in Engineering Units of gallons per
minute. The ML-Drive compares the sensor shaft feedback to the scaled setpoint and
calculates any speed error. When the ML-Drive finds speed error, the control algorithm
adjusts the drive output and reduces the error to zero.
Figure 1-1 ML-Drive Master Mode
ML-Drive
Motor
Sensor
Pump
Feedback Frequency
Drive
Output
Contrex
CODE SELECT
SET POINT
TACH
7 8 9
4 5 6
1 2 3
0 –
.
ENTER CLEAR