PS288_PS388_PS588_981-0424-002D - 第165页

■ Workspace, Head and Gantry ◘ Inspecting Gantry Parts PS Series Owner’s Manual 4—25 back Figure 4-21: PNP head sliding retaining clips. 1c. Check gantry wiring harness plug connections and make sure that they are secure…

Maintenance ■ Workspace, Head and Gantry

4—24 Data I/O • 981-0424-002

back

2b. Then rotate SET screw counterclockwise until the red vacuum

sensor lamp comes on.

2c. Then rotate the SET screw clockwise until the lamp goes off.

2d. Finally rotate the SET screw another 1/8th revolution clockwise.

3. Check adjustments—

3a. Open the plastic cover on the Tape Output System and block the

air hole at the Tape-Output-PNP head probe wit a device. The

red vacuum sensor lamp should light immediately.

3b. Unblock the hole. The red vacuum sensor lamp should extin-

guish immediately.

4. Repeat—

4a. Test several times to ensure the red vacuum sensor lamp lights

and dims as described. If the red vacuum sensor lamp does not

go off and on properly, turn the SET screw clockwise a few

degrees and retry.

5. Complete—

5a. Close the clear plastic cover.

5b. Replace the front panel.

Note: If the PS System displays a vacuum error, it may be due to

the vacuum generator’s inability to sense a vacuum within the time

limits set in the AH500 software.

The hysteresis delay should be set as short as possible to prevent the

software from timing out. However, if the hysteresis delay is set too

short, vacuum line pulsations from usage throughout the system

could inadvertently switch the sensor on when it should be off.

Adjustments should be made to accommodate both conditions.

Inspecting Gantry Parts

Checking the PNP Head and Gantry Wiring Harnesses

1. Check—

1a. Switch the PS System main power switch OFF. Verify that the

main power switch is in the OFF position.

1b. Check the retaining clips on the two DB25 connectors plugged

into the PNP head. They slide back (away from the operator) to

release. Make sure they are slid forward. See Figure 4-21.

■ Workspace, Head and Gantry ◘ Inspecting Gantry Parts

PS Series Owner’s Manual 4—25

back

Figure 4-21: PNP head sliding retaining clips.

1c. Check gantry wiring harness plug connections and make sure

that they are secure. See Figure 4-22.

Figure 4-22: Three electrical connections on the Vacuum Generator.

Inspecting Gantry Cable Carriers

1. Clean—

1a. Use dry compressed air to remove all foreign material from the

cable carriers.

2. Check—

2a. Visually check that the cables are in good condition, and are not

too loose or too tight.

2b. Check by hand that the upper end of the upper carrier is tight. If

not, tighten the two mounting screws. Cable ties may need to be

cut to move the cables out of the way. See Figure 4-23.

Maintenance ■ Workspace, Head and Gantry

4—26 Data I/O • 981-0424-002

back

Figure 4-23: Looking up from the back of the system, the upper end of

the upper cable carrier is screwed to the frame.

2c. Check the two screws on the lower end of the lower cable carrier

and tighten if necessary. See Figure 4-24.

Figure 4-24: The lower end of the lower cable carrier: A- from above,

and B-from below.

2d. Check the four screws on the center carrier and tighten if neces-

sary. See Figure 4-25.