Final Adjustment
4-56 Manual # 42-02-7223 C1
Traction Loss Test
To test for compliance with the traction loss detection means (required by the 2010 and later
editions of A17.1/B44) with the jumper still installed between the 3 bus and terminal SAFH (see
step 9 above), repeat the test at a speed sufficient to drive the car or counterweight into and
fully compress the buffer (which may be less than or equal to the rated buffer speed, e.g. 150
fpm). Once the buffer is fully compressed and ropes break traction on the drive sheave, con-
tinue to press ENABLE + UP or DOWN and verify that within 20 seconds a “Loss of Posi-
tion or Speed Indicator” fault is generated and power is removed from the motor and brake.
Verify that the fault is maintained over a power cycle and is reset only by pressing FAULT
RESET on the iBox.
Alternatively, where the driving system stalls rather than the ropes slipping traction when the
car or counterweight bottoms out on its buffer, loss of traction may instead be simulated as fol-
lows:
With the car on automatic operation away from the terminal landings, temporarily secure the
hatch encoder wheel so that it does not contact the rail. Enter a car call and observe that
although the car will move to answer the call, it will stop within 10 seconds and will not restart.
To restore normal operation, release the hatch encoder wheel and press the Fault Reset but-
ton on the iBox.
Reminder: Be sure to remove all jumpers when the tests are completed and the car is moved out
of the pit.
Inspection Overspeed Test
This test verifies that moving the elevator on Inspection Operation at a speed greater than 150
fpm will result in an emergency stop.
1. Place the car on machine room inspection.
2. Verify that Inspection Overspeed (Controller > View > Setup > Safety > Configuration
tab) is set to 150 fpm.
3. Position the car in the middle of the hoistway.
4. On the View > Safety Tests screen, set test Speed to 200 fpm.
5. Select the Inspection Overspeed test. Follow on-screen instructions.
6. Use the inspection switches to move the car when ready.
When the car exceeds 150 fpm, the overspeed condition must stop it.
Contract Overspeed Test
This test verifies that moving the elevator at a speed greater than the programmed contract
overspeed will result in an emergency stop.
1. Position the car in the middle of the hoistway.
2. On the iView > Safety Tests tab, set Speed to exceed the programmed contract over-
speed value, but not high enough to cause the electrical or mechanical governor to acti-
vate. (You may have to physically bypass the electrical Governor switch.)
3. On the Quattro DC Drive (if applicable), set A1-Overspeed Mult (percent) = the same
percentage of overspeed as the test Speed and set U4-Overspeed Test = Enable.
4. Select the Contract Overspeed test. Follow on-screen instructions.
When the car exceeds the programmed contract overspeed value, the car must perform an
emergency stop.
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