7A.4 Ride Quality And Performance Adjustments - O. Thompson Microflite Ultra 2000 Installation & Adjustment Manual

Microflite Ultra 2000 - Magnetek DSD 412 DC Drive
7. Run the car to a floor near the bottom of the hoistway. Place full load in the car.
8. Disable the car doors. On the drive, access parameter 610 (Motor Armature Voltage).
Press the data/function key so armature voltage is displayed.
9. Enter a car call near the top of the hoistway. While the car is running up at contract
speed, monitor the armature voltage.
10. After the car stops at the desired floor, compared the observed armature voltage to the
value on the motor nameplate. If the observed armature voltage is above the value on
the motor nameplate, reduce parameter 49, Weak Field Current, until nameplate
armature voltage is obtained while the car is running up with full load.
NOTE: If no change in armature voltage is observed, check parameters 56 and 57.
These parameters control the speed at which the field is weakened and strengthened.
Set 56 to a value of 90, and 57 to a value of 70.
If the observed armature voltage is below the value on the motor nameplate, increase
11.
parameter 49 until nameplate armature voltage is obtained while the car is running up
with full load.
NOTE: If the car has a geared machine, field weakening will not be required on this particular
motor. Increase parameter 50, Full Field Current, until motor nameplate armature voltage is
obtained while the car is running up at contract speed with full load. BE CAREFUL NOT TO
EXCEED THE NAMEPLATE FULL FIELD CURRENT VALUE OR THE FIELDS MAY BE
DAMAGED.
12. Run the car to a floor near the bottom of the hoistway. Place a car call near the top of
the hoistway. After the car stops, access the scope screen on the monitor. Observe the
first 5 seconds of the car's run. If the run appears smooth, with no distinct 'step' in the
acceleration rate, go to step 13. If there is a step, decrease parameter 57, Field
Weaken Speed, in the drive by a value of 5 until the step is completely gone. Go to
step 14.
Increase parameter 57, Field Weaken Speed, in the drive by a value of 5. Run the car
13.
up and observe the scope screen. Keep increasing parameter 57 until a step seen in
the acceleration. Decrease parameter 57 until the step is completely gone.
14. Permanently save all drive parameters by using function 994. Enable the car doors.
Remove the appropriate amount of weight and ride the car, staying away from the
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terminal floors. Make any necessary adjustments to the speed curve.
Remove the weight to the car, approximately 100 pounds at a time. Staying away from
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the terminal floors, observe one floor, two floor and multi floor runs to be sure that the
car rides well under all load conditions.
17. Remove ALL jumpers from the Limit board and re-install all connectors.
Go to Section 8 and perform a learn procedure on the Limit board. After completing the
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learn procedure, go to Section 9 and perform the Pretorque set up, if applicable. Return
to Section 7a.4 for final adjustments to the car's ride quality.

7a.4 Ride Quality and Performance Adjustments

Revision: AA 2.2 Printed 03 - 15 - 03 7a - 4