• Topic ID: id_16157729
  • Version: 1.0
  • Date: Jul 7, 2018 4:25:41 PM

Axial Motion Checks

1 Axial Encoder Check

Turn the Gantry by hand until it passes through the Axial Home Flag. Verify the following while referring to Table 1:

  • CH A and CH B LEDs toggle.

  • CH C LED toggles on and off once while home LED is illuminated.

2 Axial Home Flag Check

Turn the Gantry by hand until the Axial Home Flag approaches the sensor. Verify:

  • Flag passes through sensor without making contact.

  • Flag is centered in sensor window top to bottom.

  • With flag in sensor window, verify Home Flag LED illuminates. See Table 1.

  • Perform Axial Encoder Check, Axial Encoder Check.

3 Axial Brake Check

note:

The brake may not toggle if the system underwent a hardware reset since the last time you turned on gantry AC power. If the brake doesn’t toggle, use the 120 VAC enable switch to turn gantry 120 VAC power off, then on. Then toggle the axial drive enable switch. You should now hear the brake as it energizes and de-energizes.

Make sure:

  • When you turn off the axial drive enable, the switch pilot light turns off and the brake releases. (You can easily rotate the Gantry by hand.)

  • When you turn on the axial drive enable switch, the switch pilot light turns ON and the brake energizes.

Notice Image
  • notice
  • Always turn ON the 120 VAC before the HVDC. Turning ON HVDC power before 120 VAC power can result in equipment damage.

4 Axial Dynamic Brake Fuses

5 Axial Control Functional

Perform gantry rotational testing using Axial Functional Diagnostic. Service Desktop>Diagnostics>Axial Control>Axial Functional.

  1. Perform one (1) pass each "Open Loop Rotation" at each scan speed. Verify no errors.

  2. Perform one (1) pass each "Closed Loop Rotation" at each scan speed. Verify no errors.

  3. Perform several passes of "Goto Position" choosing different angles. Verify no errors.