CONTREX ML-TRIM - Manual (Page 33)

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ML–TRIM CALIBRATION
1) Make sure that the ML–Trim is still in “R–Stop”. If the ML–Trim is not in
“R-Stop”, then put it in “R–Stop” by opening the R–Stop Logic input
(J5 pins 9, 11). Refer to
Installation/Setup: Wiring, Inputs, R–Stop, page 2-10.
2) Enter the resolution (PPRs) of the feedback sensor in the PPR Feedback
Control Parameter (CP-31) by entering the following on the keypad:
Press “Code Select”
Enter “31” (PPR Feedback)
Press “Enter”
Enter the Pulses Per Revolution (PPR) of the feedback sensor
Press “Enter”
The Tach for the Direct mode is now scaled.
3) Set the ML–Trim's Maximum Speed Potentiometer (located on the rear) as far
counter clockwise as it will turn. This is the minimum speed setting.
4) Enable the ML–Trim's Direct mode by entering the following on the keypad:
Press “Code Select”
Enter “61” (Direct Enable)
Press “Enter”
Enter “1”
Press “Enter”
5) Put the ML–Trim into “Run” by deactivating (shorting) the R–Stop input
(J5 pins 9, 11) and the F–Stop input (J5 pins 10, 11) and then activating
(shorting) the Run input (J5 pins 6, 8). Although the motor is now in “Run”, it
will have zero speed until you adjust the Direct Setpoint (in the next step).
6) Gradually set the ML–Trim's Direct Setpoint to 90% by entering the following
on the keypad:
Press “Code Select”
Enter “6” (Direct Setpoint)
Press “Enter”
Enter “10”
Press “Enter”
Enter “20”
Press “Enter”