KE-750_QA表.pdf - 第77页
FUNCTION NAME Head Vacuum Level F unction/Performance CHECK/ADJUSTMENT METHODS (REMEDIAL ACTION PROCEDURE) ASSURED QUALITY Reliability QUALITY CHARACTERISTI CS (SPECIFIC ATION VALUES) CATEGORY Safety Product Image ROLE I…
MODEL KE-750/760
UNIT Electrical REF. NO.
NAME
EL-7
FUNCTION PWB Detection Sensor
NAME Sensitivity 2/2
QA Table
Output and Indicator Lamp Operation Chart
2. Sensitivity adjustment
7.0X o
r
more
6.0X o
r
more
5.0X o
r
more
4.0X o
r
more
3.0X o
r
more
2.0X o
r
more
1.5X o
r
more
1.2X o
r
more
1.0X o
r
more
Margin
(magnification) with
respect to
hysteresis
automatically set
Detection
margin display
(digital
display)
Detection Margin Displa
y
Here is a guideline for detection margin display that is given in digital form at the end of
sensitivity setting.
A
: Twice as large as the amount of hysteresis automatically set at
sensitivity setting
Striking ligh
t
intensity level
display (digital)
Stabilization
indicator lamp
(green)
Control output (L-
ON setting)
Operation indicato
r
lamp (red) (L-ON
setting)
Time
Stabilized light blocking
Unstable amount of light striking
Unstable light blocking
Stabilized amoun
t
o
f
ligh
t
striking
Operation level
A
mount o
f
incident light
[1] For the adjustment, use as the workpiece a glass epoxy PWB with green resist on the F surface and with no resist on
R surface.
[2] Place the mode selector switch in the SET position. (If the switch is placed back in the RUN position at this time, a
change of sensitivity setting will not be valid.)
Digital display ... [1] (standby for 1st run)
Indicator lamp (red): OFF
Indicator lamp (green): OFF
Indicator lamp (red): OFF
Indicator lamp (green): Blinking
Digital display (standby for 2nd
[3] Place the workpiece at the specified place and press the tuning button. (1st run) (See Note 1 below.)
If the sensitivity is lower than required:
Indicator lamp (red): Blinking
Digital display (2tandby for 2nd
Indicator lamp (green): Blinking
[4] Move the workpiece out and press the tuning button. (2nd run) (See Note 1 below.)
When tuning has been good:
When tuning has been unsuccessful:
Digital display ... Shows the detection
margin [1] to [9]
Digital display
... Low sensitivity error [E] blinking
Low level difference error [E] ON
Place the mode selector switch in the
RUN position. This completes the
sensitivity setting.
Change the workpiece position and setting
distance and press the tuning button again.
*If the sensor is to be retuned, keep the
mode selector switch in the SET position
and press the tuning button once again.
The digital display shows "1" again, allowing
you to perform steps from [2] to [4].
The digital display shows "1" again,
allowing you to perform steps from [2] to
[4].
Digital display ... [1] (standby for 1st run)
Digital display ... [1] (standby for 1st run)
*If the mode selector switch is placed in the
RUN position in incorrect tuning condition,
the error display remains and the amplifier
does not operate.
Note 1: The same sensitivity setting can be made even if the workpiece conditions are exchanged between steps [3] and
[4].
FUNCTION NAME Head Vacuum Level Function/Performance CHECK/ADJUSTMENT METHODS (REMEDIAL ACTION PROCEDURE)
ASSURED QUALITY Reliability
QUALITY CHARACTERISTICS (SPECIFICATION VALUES) CATEGORY Safety
Product Image
ROLE IN FUNCTION (MEANING OF SPECIFICATION VALUES)
POSSIBLE MALFUNCTIONS (CAUSED BY INCORRECT SPECIFICATION VALUES)
COMPONENTS
NO. Part No. Part Name Associated Quality Characteristics
1 E86077210A0 Head main board assembly DC power source output voltage adjustment
2 E93157250A0 Head 1 pressure sensor assembly
3 E93187250A0 Head 2 pressure sensor assembly MODEL KE-750/760
4 E93217250A0 Head 3 pressure sensor assembly UNIT Electrical REF. NO.
5
NAME
EL-8
6 FUNCTION Head Vacuum Level 1/2
7
NAME
8
9
10
QA Table
Locations of voltage measurement points and variable resistors
– DAC input voltage: Pressure sensor output voltage x 1/2
– DAC reference voltage: 1.25 V ±0.01 V
Serving as the adjustment of the nozzle vacuum measurement circuit, it is directly concerned with the measurement value of
vacuum.
1. Faulty vacuum value resulting in a pickup-and-placement motion error.
2. Reduced placement cycle time
MODEL KE-750/760
UNIT Electrical REF. NO.
NAME
EL-8
FUNCTION Head Vacuum Level 2/2
NAME
QA Table
Before starting the adjustment procedure, make sure that the DC power source voltage has been properly adjusted.
Adjustment procedure
a. Check that the pressure sensors have been connected to CN17, 18, and 19 of the head main board. (Connection to
CN19 is not necessary in KE-760.)
b. Close the circuit breaker and turn ON power.
c. With the sensors connected, measure the voltage of pin 2 of the following and record the values:
(1) CN17 Left head
(2) CN18 Right head
(3) CN19 Center head
(4) TP7 GND
d. Measure the voltage at the following check pins:
(5) TP5 Left head
(6) TP1 Right head
(7) TP3 Center head
(4) TP7 GND
Turn the following variable resistors so that the voltages measured become 1/2 of the measurements taken in step c:
(8) VR5 Left head
(9) VR1 Right head
(10) VR3 Center head
e. Turn the following variable resistors so that the voltages at the following check pins become 1.25 V ±0.01 V:
Check pins:
(11) TP6 Left head
(12) TP2 Right head
(13) TP4 Center head
(4) TP7 GND
Variable resistors:
(14) VR6 Left head
(15) VR2 Right head
(16) VR4 Center head
This completes the adjustment of the head vacuum level.