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NPM Safety Precautions Page S-36 EJM9BE-SF-02N-24 The uninterrupted power connectors and the motor that does not stop if an emergency st op switch is pressed Even if an emergency stop switch is pre ssed, the motor for th…
NPM
Safety Precautions
EJM9BE-SF-02N-24 Page S-35
Stopping specifications when coupled
For coupled NPMs as shown above, the following table shows the stopping specifications for the
left NPM A and right NPM C when the safety device of the center NPM B is working.
NPM A NPM B NPM C
The emergency stop switch is ON.
×
(
∗
)
The main power supply switch is OFF.
×
(
∗
)
The feeder cover is removed.
×
(
∗
)
×
The internal opening sensor (left) is ON.
The internal opening sensor (right) is ON.
×
The main-body cover is open.
The pick-up section opening sensor is ON.
The collectively changing truck is detached.
The STOP switch is ON.
And, the following table shows the stop specifications of NPM A, NPM B, and NPM C when the
external opening sensors on the LNB conveyor (optional), the HUB conveyor (optional), the
conveyor R (optional), and the conveyor L (optional) are ON, or when the covers (for dual
conveyor) are open.
LNB conveyor and Conveyor L NPM A NPM B NPM C HUB Conveyor and Conveyor R
When the external opening senso
r
is ON, or when the cover (for
dual conveyor) is open
×
When the external opening sensor
is OFF, or when the cover (for
dual conveyor) is closed
When the external opening senso
r
is OFF, or when the cover
(for dual conveyor) is closed
×
When the external opening sensor
is ON, or when the cover (for
dual conveyor) is open
∗
If the emergency stop switch is ON or a feeder cover is detached while the main power turns OFF,
servo OFF error appears at XY startup. If this error appears, reset an emergency stop switch or
attach the feeder cover.
Main power supply switch
Emergency stop switch
STOP switch
Main-body cover
Feeder cover
Pick-up section opening sensor
NPM
A
NPM
B
NPM
C
Internal opening sensor
Conveyor R
or HUB conveyor cover
LNB conveyor
or conveyor L cover
External opening
sensor
External opening
sensor
○ : Operable
× : Inoperable
NPM
Safety Precautions
Page S-36 EJM9BE-SF-02N-24
The uninterrupted power connectors and the motor that does not
stop if an emergency stop switch is pressed
Even if an emergency stop switch is pressed, the motor for the vacuum pump does not stop. This is
because the motor prevents picked-up components from dropping.
The following power connectors are uninterrupted.
1. Power connector for the CPU box
2. Power connector for the tray
3. Power connector for the inspection truck
The other motors (see below) stop if an emergency stop switch is pressed.
1. X-axis/Y-axis motor
2. Head Z-axis/
θ
-axis motor
3. Conveyor motor
4. Width-adjustment motor
5. Support vertical-axis motor
EJM9B-AD01
Vacuum pump
NPM
Safety Precautions
EJM9BE-SF-02N-24 Page S-37
Handling of linear motors
NPM uses linear motors for driving along its X- and Y-axes.
Since extremely powerful permanent magnets are used in the linear motors, wrong handling can be
extremely dangerous even if the main power supply is in the OFF state.
In working inside the safety covers (e.g. in maintenance), follow the rules below.
1. Those who wear pacemakers must not work inside the safety covers.
2. In working, do not wear any metals such as watches, pierced earrings, and
necklaces.
3. Since the movers of linear motors become hot (80
°
C under 25
°
C environment,
90
°
C under 35
°
C environment), take care not to suffer burns.
After shutdown, it may be three hours or more before they reach room temperature.
4. Keep magnetic bodies such as iron (e.g. tools, jigs, and bolts) 40 mm away from
the linear motors.
Depending on the shapes of magnetic bodies, they may not be able to be detached from each
other.
Such as small chip components can be removed by hand.
(There is no problem if you touch the permanent magnets with bare hands.)
5. Keep watches, cellular phones, and magnetic cards 40 mm away from the linear
motors.
These devices may become broken.
As for magnetic cards, data may become corrupted.
6. Do not disassemble the linear motors.
Since the attractive power of the stators (the magnets) is extremely powerful, disassembling
them can be extremely dangerous.
EJM9B-AM00
Y-axis stator (magnet)
N610052923AA00
X-axis mover
X-axis stator (magnet)
Y-axis mover