M3plus_OperationManual_e.pdf - 第54页
2 - 21 2 Basic oper ation 4. Starting and finishing production Working Ratio This is the machine unit's working ratio. This ratio is not affected by the status of the upstream and downstream machines, and is calcula…
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Basic operation
4. Starting and finishing production
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Display the operation monitor as required.
Press the [Monitor] button to confirm the operation status during production.
The mounting information can be confirmed by selecting the [Main], [Detail], [Vision],
[Alignment] and [Retry] tabs.
Monitor: Main
The [Monitor]-[Main] tab screen shows you the real-time production status such as the PCB count
and cycle time. Displaying this screen during production is handy. All information will be cleared
when the PCB type is changed.
Monitor: Main
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Start Time
Displays the date and time that the PCB data currently being produced was changed.
Current Time
Shows the current date and time (system clock time in the machine).
Board Counter
Displays the number of PCBs produced after changing to the current PCB data. The PCB data reset
midway is not counted unless mounted midway.
Error Rate
Displays the rate of discarded components due to pickup or recognition errors with respect to all
components that have been consumed after changing to the current production PCB data. This data is
updated when the production of one PCB is completed.
Number of discarded components
To tal component consumption
Error rate (%) = 100
Cycle Time (sec/board)
Shows the average (second/board) of the mounting time per board. The data is updated when
mounting is completed. The cycle time includes the mark (including fiducial and bad marks)
recognition time, the component pickup time, component recognition time, mounting time, retry
operation time, component dump time and nozzle change time.
The transfer time and stop time (time stopped with error or [STOP] button) is not included.
Cycle Time (sec/chip)
Shows the time (second) to mount one component on the PCB. This is the time obtained by dividing
the time for one sequence from pickup to mounting by the number of components mounted in that
sequence.
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Basic operation
4. Starting and finishing production
Working Ratio
This is the machine unit's working ratio. This ratio is not affected by the status of the upstream and
downstream machines, and is calculated with the following expression. Generally, the mounter
working ratio is 40 to 70%.
Cumulative mounting time + cumulative transfer time
[
(Production completion time - setup completion time)
- cumulative standby time
]
× 100
Working ratio (%)
=
Cumulative mounting time : Total time that head is operating
Cumulative transfer time : Total transfer time (loading/unloading)
Cumulative standby time : Total time upstream or down stream machine stands by
Production completion time : Time changed to next production PCB
Setup completion time : Time [START] button was pressed and operation started
[Reset]
Resets the production control information, including each data and current production quantity,
current unloader quantity, scheduled production quantity and scheduled unloader quantity. The
"Board Counter" value on the [Setup] screen is also reset when this production data is reset.
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Basic operation
4. Starting and finishing production
Monitor: Detail
The [Monitor]-[Detail] tab screen shows you the detailed production status of the current production
PCB data.
Monitor: Detail
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Start Time
Shows the time that production was started (time that board selection was completed). The quantity
is normally zero boards.
Last Production Time
Shows the display data update time. The quantity is the number of PCBs produced up to the present
time.
Estimated End Time
Shows the estimated production end time. The quantity is the scheduled production quantity input on
the [Setup] screen. Note that this will be blank if the scheduled production quantity has not been
input.
Supply Time (sec/board)
Shows the average loading time per board.
Delay Time (sec/board)
Shows the time that the machine has waited for PCB loading. Note that when the machine is
mounting components, the delay time will not be counted even if the PCB is standing by. The
average delay time per board or the cumulative delay time can be displayed by pressing the [Unit
Change] button.
Rest (boards)
This is the value obtained by subtracting the production completed board quantity from the scheduled
production quantity.
Assemble Time (sec/board, sec/block, sec/chip)
Shows the time for mounting the board. This time includes the mark recognition (fiducial, bad mark,
etc.), component pickup, component recognition, mounting, dispensing, retry operation, nozzle
change and component dump time, etc. The average time per board, average time per block or the
average time per chip can be displayed by pressing the [Unit Change] button.
Error Stop Time (sec/board, sec)
Shows the time that the machine has been stopped with an error, and is the total from when the error
occurs to when the [CLEAR] button is pressed. Note that the time for recovery is not included. The
average error stop time per board or the cumulative error stop time can be displayed by pressing the
[Unit Change] button.
Output Time (sec/board)
Shows the average unloading time per board.