Contrex MLP-Drive Manuel d'utilisateur Page 15

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Figure 1-2 is an example of the Follower mode of operation in a pump application. The
scaling format allows the operator to enter the setpoint as a ratio of ingredient B to
ingredient A. The MLP-Drive compares the setpoint ratio to the Follower sensor shaft
(feedback) and Lead sensor shaft to calculate any speed error. When the MLP-Drive
finds speed error, the control algorithm adjusts the drive output and reduces the error to
zero.
Figure 1-2 MLP-Drive Follower Mode
MLP-Drive
Drive
Output
Lead Motor
Sensor
Pump
Feedback Frequency
MLP-Drive
Drive
Output
Follower Motor
Sensor
Pump
Feedback Frequency
Ingredient B
Ingredient A
Follower
Lead
Final Product
Lead Frequency
Contrex
CODE
SELECT
SET
POINT
TACH
7
8 9
4 5 6
1
2 3
0
.
ENTER
CLEAR
Contrex
CODE
SELECT
SET
POINT
TACH
7
8 9
4 5 6
1
2 3
0
.
ENTER
CLEAR
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