Motion Control Engineering Nidec iControl, Руководство пользователя, Страница: 134 / 453

4-45
Safety Tests
iControl AC
4
speed sufficient to trigger the Contract Overspeed but not high enough to trip the
mechanical governor.
3. Calculate the percentage of Contract speed represented by the Test speed and set up the
AC drive for an overspeed test ( see “Running a Test” on page 4-43 ).
4. Select the Electrical Governor test and click Select . Complete on-screen instructions.
5. Place a car call that will allow the car to reach the necessary speed.
Contract Overspeed Test
This test verifies that moving the elevator at a speed greater than the programmed contract
overspeed value will result in an emergency stop.
1. Position the car in the middle of the hoistway.
2. The test
Speed must exceed the programmed Contract Overspeed value shown on the
Controller > View > Setup > Safety tab (typically 107% of contract speed), but not high
enough to cause the electrical or mechanical governor to activate. Contract Overspeed
plus 15 fpm should be sufficient. You may have to physically bypass the electrical Gover-
nor switch.
3. Calculate the percentage of Contract speed represented by the test Speed and set up the
AC drive for an overspeed test ( see “Running a Test” on page 4-43 ).
4. On the Controller > View > Safety Tests tab, select the Contract Overspeed test.
5. Enter the desired test Speed determined in step 2 and then click Select .
6. Follow the on-screen instructions.
7. When the car exceeds the programmed contract overspeed value, the car must perform
an emergency stop.
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 = 200 fpm.
5. Select the Inspection Overspeed test and click Select . Follow on-screen instructions.
6. Use the inspection buttons to move the car when ready.
When the car exceeds 150 fpm, the overspeed condition must stop it.
Car/Counterweight Buffer Test
This is a two-part test. The car buffer test verifies that the car striking the buffer will cause the
hoist motor to break traction and that the car buffer will automatically return to its fully-
extended state after having been fully compressed. The car is arranged to run into the terminal
landing without initiating any form of slowdown. Neither the final limit switch nor the buffer
switch must stop the car.
1. Be certain that the pit is prepared, buffers ready, etc.
2. Place a full load in the car.