KEYENCE SJ-F300 Series - Manual (Page 10)

9
3-4 About Display Function
■ Condition alarm output function
This function causes the condition alarm output indicator to blink and an alarm signal (control output
[N.O.]) to output when ions are being absorbed by surrounding metal objects or when static elimination
performance is influenced by the installation environment (temperature, humidity, surrounding metal
objects, etc.).
Refer to "Adjusting Condition Alarm Sensitivity" (page 7) for details about condition alarm
sensitivity setup.
• The display and output of condition alarm are automatically turned off when the
cause of the alarm condition is removed.
• In the case where the Static Elimination Blower Units are used in connection, the
alarm signal is output when alarm condition occurs in one of these units.
Condition alarm indicator
Condition alarm indicator
Tip
Note:
3-5 Other Functions
Abnormal Discharge Detection Function
To prevent trouble, this function causes the ion emission to stop when it detects abnormal discharging
caused by condensation on the electrode needle tips or adhesion of debris. At this time, the ion level
alarm indicator and the condition alarm indicator on the Controller Unit and all monitor LEDs on the
Static Elimination Blower Unit light up in red to inform you that an abnormality has occurred.
Refer to
"Table of Indicated States" (page 12) for indicated states of the Controller Unit.
About Function When Static Elimination Blower Units Are Used in Connection
In the case where the Static Elimination Blower Units are used in connection, the blow rates and the ion
balances of all the units can be adjusted collectively from the Controller Unit.
■ Blow rate collective adjustment function
This function allows the blow rates of all the units being in connection to be increased or decreased
collectively.
Increasing the blow rate enables static elimination from a wider area.
Refer to
"Adjusting Blow Rate of the Static Elimination Blower Unit" (page 7) for details about how to
adjust blow rate collectively.
■ Ion balance collective adjustment function
This function allows the ion balances of all the units being in connection to be adjusted collectively.
The SJ-F300 Series senses the charged amount of the target object by the I.C.C. function to
automatically control the emission (balance) of plus and minus ions.
The zero point, the point for reference for the I.C.C. function, is adjusted before shipment. However, in
some environments, the zero point sometimes drifts. If this reference zero point drifts, adequate static
elimination cannot be maintained. For this reason, it is necessary to adjust the SJ-F300 Series to a
desired zero point using this function.
Refer to
"Adjusting Ion Balance" (page 7) for details about how to adjust ion balance collectively.
4MAINTENANCE
4-1 About Maintenance
Maintenance must be performed periodically to ensure that the static elimination performance of the
SJ-F300 Series is fully demonstrated. For maintenance, be sure to thoroughly read the descriptions
under "Safety Precautions" (
page 1), and pay attention to the following points.
About Maintenance
• The SJ-F300 Series uses high voltage. Before starting maintenance, be sure to turn
the power OFF. Failure to do so may result in electric shock or malfunction.
• Do not directly touch the electrode needles.
Take care not to touch these needles even if
the power is turned OFF. Directly touching
these needles may cause personal injury.
When the SJ-F300 Series is used for a long period of time, the electrode needles become dirty due to
the adhesion of dust and dirt.
If the ion level alarm indicator lights, clean the electrode needles. If the electrode needles are used in a
dirty or dusty state, the static elimination performance can no longer be fully demonstrated, resulting in
accidents or malfunction. We recommend periodically cleaning the electrode needles (as a guideline,
once every two weeks in a regular operating environment though this depends on the installation
conditions).
If cleaning the electrode needles does not improve the static elimination performance, or the ion level
alarm indicator frequently lights, replace the Electrode Unit.
WARNING
START /STOP BALANCE ION FAN
COND IONLEVEL
4-2 Performing Maintenance on the Electrode Needles
When the SJ-F300 Series is used for a long period of time, the electrode needles become dirty due to
the adhesion of dust and dirt.
If the electrode needles are used in a dirty or dusty state, the static elimination performance can no
longer be fully demonstrated, resulting in accidents or malfunction. Be sure to periodically perform
maintenance on the electrode needles.
Performing Maintenance on the Electrode Needles
• Before removing the Electrode Unit, turn the SJ-F300 Series OFF.
• Do not directly touch the electrode needles with your hands. Doing so may
cause personal injury. Pay attention to this when performing maintenance
on the electrode needles.
1
Remove the Electrode Unit.
Unlock the lock switch on the Static
Elimination Blower Unit, and pull out the
Electrode Unit in the direction of the
arrow.
2
Clean the electrode needles.
Clean the electrode needles with a cotton wool
bud moistened with alcohol.
WARNING
START /STOP BALANCE ION FAN
COND IONLEVEL
BALANCE ION FAN
COND IONLEVEL
START /STOP