SYS-CP842-1.1E.pdf - 第56页
SYS-CP842-1.1E 3.Machine System CP-842E / CP-842ME System Reference 47 The operator ca n manually skip a nozzle u sing the following pr ocedure. This procedure can also be used to change the other nozzle statuses. Proced…
3.Machine System SYS-CP842-1.1E
46 CP-842E / CP-842ME System Reference
Specifying Nozzle Tolerance Values at the Machine
You can set the tolerances values for the various nozzle checks at the [Nozzle Check
Limits] screen. The settings made at this screen are used to determine whether nozzles
are acceptable for production or not.
Procedure
1. At the [Main] screen, press [Nozzle Check]. The [Nozzle Check] screen displays.
2. From the [Nozzle Check] screen, press [Nozzle Check Limits]. The following screen
displays.
3. The screen for holder 1 tolerance values displays first. Use the up and down arrows on
the right to move between the nozzle holders.
4. In the “Set Limit Value” section, select the tolerance to be set. When you select a
command, the numeric keypad displays. Input the tolerance limit (the input range
displays at the numeric keypad), and press [OK] to enter the setting.
5. When your settings are complete, press [Close] to return to the [Nozzle Check] screen.
Skipping a Nozzle Manually (Changing Nozzle Status)
Users can manually change the status of a nozzle at the machine. There are five nozzle
statuses..
OK: The condition of the nozzle is acceptable for production.
NU (Not Used): There is no nozzle in that position.
SYS-CP842-1.1E 3.Machine System
CP-842E / CP-842ME System Reference 47
The operator can manually skip a nozzle using the following procedure. This procedure can
also be used to change the other nozzle statuses.
Procedure
1. Press [Nozzle Skip] at the [Main] screen. The [Nozzle Skip] screen displays.
2. There is one button for each nozzle and the status of the nozzle is indicated by its color.
A key to the status colors is shown below the table.
3. To skip a nozzle manually press the [OK] button for that nozzle. “OK” switches to “MS”
(Manual Skip). Manually skipped nozzles or nozzles automatically skipped can be
returned to an [OK] status by pressing the button for that [MS], [CS], or [SS] status
nozzle.
MS (Manual Skip): The operator has manually eliminated that nozzle from
assembly.
CS (Check Skip): The nozzle was rejected during a nozzle check.
SS (Statistical Skip): The nozzle was eliminated from assembly through statistical
processing.
3.Machine System SYS-CP842-1.1E
48 CP-842E / CP-842ME System Reference
Skipping Nozzles Automatically (Statistical Processing)
The machine can be set to automatically skip nozzles which have a high rate of error. Users
can set a limit to the rate of errors (pick-up or inspection) caused by a particular nozzle. If
this limit is reached, the nozzle is skipped.
Nozzle statistical processing is based on a cumulative nozzle error count which is cleared
if the nozzle in question performs 16 consecutive successful pick and place attempts. If the
error limit is reached before the error count is cleared, that nozzle is skipped.
Consider the following example where the error limit has been set to 4. Nozzle cycles
where a pick-up or inspection error occurred are marked with 5, nozzle cycles where the
part is successfully picked and placed are marked with 3.
In the case above, the nozzle in question is skipped when the fourth error occurs. The
machine can be set to automatically test the skipped nozzle again (Reject Nozzle Check).
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Part
Status
Successful
Attempt Count
Error
Attempt Count
16 consecutive successful
attempts clears the error count.
4 errors occur before the error
count is cleared, and the nozzle
is skipped.
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