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6 -14 Service Manual Chapter 6 SED8013110 6 Conveyor unit and air supply unit adjustment Checking PCB detection sensor operation The sensors may fail to detect a PCB due to factors such as the orientation, distance and a…
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SED8013110
Service Manual
Chapter 6
6
Conveyor unit and air supply unit adjustment
1.6 PCB detection sensors
There are 10 PCB detection sensors arranged along the front rail of the
conveyor. The sensors each have LEDs mounted on the side, which are
normally lit. When the sensor detects the presence of a PCB, the LED turns
off.
PCB detection sensors (right-to-left flow)
43605-D8-00
N1034 N1150
N1154
N1031 N1030
N1033
N1032
N1035
N1036
N1153
N1050
N1054N1053
Carry-out
conveyor (W4)
Exit stopper A table
main stopper
A table
conveyor (W3)
B table
main stopper
B table
conveyor (W2)
Entrance
stopper
Carry-in
conveyor (W1)
45601-D8-00
Sensor Code Sensor Function
N1030
N1031
N1032
N1033
N1054
N1050
N1053
N1154
N1150
N1153
N1034
N1035
N1036
PCB detection at entrance of carry -in conveyor
For carry-in conveyor speed reduction
PCB detection at standby position of carry-in conveyor
PCB detection at exit of carry-in conveyor
PCB detection at B-table clamping position 1
PCB detection at B-table clamping position 2
PCB detection at exit of B-table conveyor
PCB detection at A-table clamping position 1
PCB detection at A-table clamping position 2
PCB detection at exit of A-table conveyor
PCB detection at entrance of carry-out conveyor
For carry-out conveyor speed reduction
PCB detection at exit of carry-out conveyor
6
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Service Manual
Chapter 6
SED8013110
6
Conveyor unit and air supply unit adjustment
Checking PCB detection sensor operation
The sensors may fail to detect a PCB due to factors such as the orientation,
distance and angle at which it is attached. The sensors may also be affected
by strong extraneous light, excessive dust, and the shape (hole or notch)
and color of the PCB. Using PCBs on which you actually mount
components, check that the sensors can detect them reliably.
PCB sensor detection errors
43603-D8-00
Irregular shape PCB Misdetection due to
change in distance to PCB
Detected part of head assembly
(incorrect position setting)
To check the PCB sensor functions, refer to the procedure outlined below.
1 Prepare the PCBs.
Prepare several PCBs that you actually use for component mounting.
2 Adjust the conveyor width according to the size of the
PCBs.
To adjust the conveyor width, you can use the <3/4/A0 CONVEYOR
UNITS> − ”CONV. WIDTH” command.
e
3 Press the emergency stop button, then place the PCBs on
the conveyor.
Place a PCB over each sensor along the conveyor. To clamp the PCB in the
mounting position over the sensor N1033, the <2/1/B7 CONVEYOR
UNITS> command will prove convenient.
4 Open the input monitor and check the detection status.
1. Select <3/4/A1 INPUT/OUTPUT MONITOR> and press the [ENTER]
key.
2. Use the [TAB] and arrow keys to line up the cursor with “N1030” to
“N1036”.
The input monitor digit reads “1” when a PCB is detected, and reads
“0” when not detected. Check that the digit of each sensor reads “1”.
Also check that the detection status of “N1054” and “N1154” (PCB
sensors in the mounting position) does not vary even if the locate pins
and push-up plate are raised to clamp the PCB.
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SED8013110
Service Manual
Chapter 6
6
Conveyor unit and air supply unit adjustment
47605-D8-00
CONV
CONV
CONV
CONV
CONV
CONV
CONV
CONV
OUT
0
0
0
0
0
0
00000000
00000000
0
0
0
0
0
0
0
0
IN
T1920
T1922
T1923
T1924
T1867
T1921
T4E60
T4E70
N1030
N1121
N1123
N1033
N1034
N1031
N1035
N1032
I/O MONITOR DISP. TYPE SELECTION
MAIN STOPPER ( A TABLE ) UP
OFF 0 / ON 1
ENT. CONVEYOR ENTRANCE
NOT DETECT 0 / DETECT 1
CONV
CONV
CONV
CONV
CONV
CONV
CONV
CONV
OBJECT CONV
<<<APPLICATION>>> 3/MAINTE/M
<<MODE>> 4/MANUAL
↑
↓
↑
↓
5 If necessary, adjust the position of the PCB detection
sensor.
Loosen the screws securing the sensor, and adjust the position, orientation
or angle at which it is attached.
n
Note
When adjusting the position of PCB detection sensors, check that they are not above the
separation points of a multi-block PCB.
6 Remove the PCBs from the conveyor.