4-17
Controlling Initial Start of Car Motion
iControl AC
4
4. Place a full load in the car. Verify
that the Test point 1 value is now
between 5.5 and 8.0. If necessary,
adjust trimpot LW ADJ on the CTP
(cartop) board in the iLink enclo-
sure to achieve the correct reading.
Pretorque Gain Adjustments
1. Place a balanced load in the car (the
balanced load weight recorded
when performing the Counter-
weight Balancing procedure).
Please refer to “Counterweight Bal-
ancing” on page 3-12.
2. With the car in Test mode (iBox
TEST switch ON) move the car to
the top floor.
3. On the Configuration > Drive >
Pre-Torque tab, enable the Pre-
torque option and send the new
selection to iControl.
4. On the Virtual Oscilloscope, select
Load Weigher Balanced on Test
point 1. If necessary, adjust the win-
dows so that you can see the oscilloscope and the Pre-Torque parameters at the same
time.
5. On the Configuration > Drive > Pre-Torque tab, adjust the Pretorque balance adjust-
ment parameter until the digital readout for Test point 1, Load Weigher Balanced, is
equal to or as close to zero (0.0) as possible.
6. If Error compensation, on the Configuration > Drive > Control tab, was increased to
compensate for rollback, you may lower the value now.
7. Verify that Pretorque position compensation, on the Drive > Pre-torque tab is set to 0.0.
If necessary, set it to 0.0 and Send it to the controller.
8. Verify that Pretorque gain, on the Drive > Pre-torque tab, is 0.0. If necessary, set it to
0.0 and Send it to the controller.
9. On the Configuration > Brake > Control tab, increase the value of Speed Pick Delay 1 to
2.0 seconds so that any rollback is easily detected.
10. Remove the weights from the car and move the car to one floor below the top landing.
11. Make a one-floor-run down. Check for rollback by either watching the motor or by mon-
itoring the Speed Feedback signal on the Virtual Oscilloscope.
12. If rollback is detected, adjust the Pretorque gain parameter on the Drive > Pre-Torque
tab, and again make a one-floor run down from one floor below the top landing. Repeat
until rollback is no longer noticeable. Then verify that there is no rollback on a one-floor
run going up from one floor below the top landing.
13. Run the car to the bottom landing. Make one-floor runs up and then down, checking for
rollback.