7B.2 Initial Set - O. Thompson Microflite Ultra 2000 Installation & Adjustment Manual

Microflite Ultra 2000 - Magnetek HPV 900 AC Vector Drive
Verify that the terminal slowdown limit switches are set according to the tables in
12.
Section 8.
On the car top, verify that all encoder and pretorque cables are securely plugged in
13.
inside the encoder electronics box.
On the car top, verify that all thumb screws on the cable from the sensor stick to the
14.
encoder electronics box are fastened securely to the boxes at each end.
7b.2 Initial Set Up
1. Place the car in the center of the hoistway. Mark the cables with chalk when the car
crosshead and the counterweight crosshead are exactly adjacent to each other.
2. If the controller is not set up for seismic operation, go to step 5.
On the monitor, observe the encoder position on the diagnostic screen. Write this value
3.
down.
4. Access the car parameters menu. Open the "VIP, MEDICAL, EARTHQUAKE
PARAMETERS" page. Program the encoder position recorded in step 3 into the
"COUNTERWEIGHT ZONE" parameter. Save this by writing it to the system's non-
volatile memory.
Move the car a convenient floor. Place 40% of the car's rated capacity in the car.
5.
On inspection, run the car so it about 10 feet above the center of the hoistway.
6.
7. Place an Amprobe on one of the leads to the motor armature.
8. While observing the display on the Amprobe, run the car down through the center of
the hoistway. Write down the amperage displayed while the car passes by the chalk
mark on the cables. The value may vary slightly, so average the value if necessary.
9. Place the car about 10 feet below the center of the hoistway.
10. While observing the display on the amprobe, run the car up through the center of the
hoistway. Write down the amperage displayed while the car passes by the chalk mark
on the cables. The value may vary slightly, so average the value if necessary.
Ignoring whether the recorded amperage values were positive or negative, if the value
11.
recorded while the car was running up was greater than the value running down, the
car is too heavy. Remove 100 pounds of weight from the car and repeat steps 8
through 10 until the recorded values are equal, but of opposite polarity.
12. Ignoring whether the recorded values were positive or negative, if the value recorded
while the car was running down was greater than the value running up, the car is too
light. Add 100 pounds of weight from the car and repeat steps 8 through 10 until the
recorded values are equal, but of opposite polarity.
13. When the values are equal, but of opposite polarity, the car is balanced. Check how
much weight is in the car. It should be between 40 and 50% of the car's rated capacity.
If not, the counterweighting needs to be adjusted. If the car is too heavy, weight needs
to be added to the counterweight to get the car balanced between 40 and 50% of the
Revision: AA 2.2 Printed 03- 15 - 03 7b - 2