CP43操作手册.pdf.pdf - 第77页
Chapter 1 Automatic Operation Part 2 1.3 Recovery When a part cannot be picked, or when a part is judged to be defective, the same type of part is picked up again at the next opportunity . This is called recovery . Recov…
Chapter 1 Automatic OperationPart 2
1.2 Automatic and Step Operation
There are two operation modes: Automatic and Step. The differences
between the two are explained below.
1.2.1 Automatic Operation
In automatic operation, the machine operates continuously without
stopping between each sequence. When the last board has been fed
out, the machine will suspend operation but will automatically
resume when a new board is loaded. Under the following
conditions, the machine will stop and exit automatic operation.
• The [CYCLE STOP] button has been pressed.
• The production schedule has been set to one board, and
sequences for that board are completed.
• There are no parts, or an error has occurred in automatic
recovery mode.
• There are no parts, or an error has occurred in placing (error
stop mode).
• The nozzle skip function is being used, and the number of
disabled nozzles has exceeded the preset limit.
• Large parts are not being picked up.
• An emergency alarm has occurred.
• The calculation of data necessary for placing parts does not
finish in time.
• Vision processing does not finish in time.
1.2.2 Step Operation
The machine operates one sequence at a time.
After every sequence, the message "Press START" appears. After
the last sequence the board is removed from the XY table and the
message "Press START" appears. During production, when there is
no board on the XY table, a board is loaded, and after one sequence,
the message "Press START" appears. In all other aspects the
machine operates as if it were in automatic operation mode.
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Chapter 1 Automatic OperationPart 2
1.3 Recovery
When a part cannot be picked, or when a part is judged to be defective,
the same type of part is picked up again at the next opportunity. This is
called recovery. Recovery mode can be set in MCS/2H Status data or at
the machine by pressing [SET], [STATUS], [RECOVERY] and [CHANGE].
There are three types of recovery modes: auto recovery, error stop and
error pass, each of which is explained below.
1.3.1 Operation of Each Recovery Mode
A. Auto Recovery
If a part is rejected during inspection or if the part is not picked,
the device number is recorded in the error recovery counter,
and the recovery operation is automatically carried out. When
the error recovery counter exceeds a preset number, the
machine stops. For example, if the counter is set at two, the
machine will stop when a part on the same device number is
mispicked three times. After this, if the [START] button is
pressed again, the recovery operation will be carried out again.
The error recovery counter number can be set either through
MCS/2H or by pressing [SET], [STATUS], [RECOVERY] and
[TIMES].
• Error Recovery Counter
Each device number is registered in the counter, and every
error is registered and sorted by device number. Each error
increases the counter by one. If a part is determined as good
this counter is cleared. However, when the number of part
errors or missing parts for any given device number exceeds a
preset number the machine stops.
After the error recovery counter exceeds its preset number the
machine stops when the defective part reaches station 5. If
before this point a part is picked from the same device number
and is held between Stations 1 and 4, those parts will not
register on the error counter. Therefore, when the machine is
resupplied and started again, the errors that occurred before
resupplying will not cause the machine to stop again.
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Chapter 1 Automatic OperationPart 2
• After a Recovery Error
If the machine stops because the number of times recovery was
performed exceeds the specified limit, the head with the part in
question stops at station 5. There are cases where that part is
also being held on other heads (between stations 1 and 4). If
this is the case, the error counter does not operate for these
parts, even though the parts out check sensor does work.
Therefore, if the recovery error occurs due to a lack of parts,
and the part supply is replenished, the error recovery stop error
will not recur.
• Next Device
If the error recovery counter exceeds its preset number and a
next device has been specified, the next device will be used to
supply parts. For detailed information refer to Chapter 5 , Next
Device.
• Device Change Mode
When the error recovery counter exceeds its preset number
while operating in device change mode, the other table will be
used if parts have been set. For detailed information refer to
Section 1.5, Device Table Mode.
• Large Parts Pickup Verification
At Station 2 the machine can check whether or not large parts
have been picked up. If a part has not been picked, the
inspection of the part at Station 4 is not carried out. The
recovery counter will register no part and the machine will
stop. Recovery will be carried out when the machine is
restarted.
• Clearing the Counters After Program Change
In device change mode and joint mode, all the device number
counters will be cleared. In changeover mode, only the table
which has been set up as the original table will be cleared.
B. Error Stop
In this mode, when parts out is detected or an error is
displayed, the machine will stop every time. After the [START]
button is pressed, a recovery operation will be carried out.
Even when operating in device change mode or when using the
next device function, device change is not carried out and the
detection of an error or of parts out will halt operation.
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