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NPM Safety Precautions Page S-34 EJM9BE-SF-02N-24 Usage of warning sheets in maintenance Before performing maintenance, affix the included wa rning sheets (see below) to prominent positions in the vicinity of the operati…
NPM
Safety Precautions
EJM9BE-SF-02N-24 Page S-33
Safety switches
Safety switch on the safety cover
Before starting regular automatic production on the machine, close all safety covers.
Since a screen displays the message prompting you to supply a material when necessary, open the
corresponding cover according to the target material and then conduct the work.
If you accidentally open a safety cover during automatic production, the machine comes to an
emergency stop to ensure the safety of operators.
(
“Safety Precautions”)
Servo switch
Since an operator needs to put the hands or part of body into the machine for changeover or
maintenance, the operating panel is equipped with the servo switch in order to ensure on-the-job
safety.
When the servo switch is turned OFF, all of the drive shafts of the machine will be inactive.
When starting production (operation), turn ON both the servo switches on the front and the rear
operating panel.
Lock out tagout procedure
Lock out tag out for each maintenance is required. It is described as “Turn OFF the main power supply
switch and stop the air supply.” in each manual. We recommend that the key be under control of the
trained engineer in accordance with your control standards.
Main power supply switch
Key
4Z4C-824E
How to keep the main power supply switch under lock and key
EJM9B-AB01
4Z4C-027E
1 Turning the handle of the main power supply switch to
RESET, pull out the lock plate in the direction of the arrow,
and then hook it on the rib .
∗
The handle can be locked only when it is located in the OFF
position.
2
Put a lock (
φ
5 to
φ
8) into the lock plate hole , and put up
a tag
7
indicating that the switch is locked.
∗
Avoid putting a lock into the lock plate hole .
4Z4C-J-XXB00-A04-01
NPM
Safety Precautions
Page S-34 EJM9BE-SF-02N-24
Usage of warning sheets in maintenance
Before performing maintenance, affix the included warning sheets (see below) to prominent positions in
the vicinity of the operating panel, for safety.
During the maintenance by two or more persons in particular, as well as using these warning sheets to
ensure safety, be sure to send signals.
This warning sheet uses a magnet.
Do not use it or store it near magnetic media or any other items
susceptible to magnetic influence.
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