KEYENCE SJ-H Series - Manual (Page 5)

5
Other Functions
This section describes other functions such as the display function, alarm output function, and air purge function.
The target's static charge and the quantity of ions generated from the static elimination bar are dis-
played on the ION MONITOR.
„ Electric charge indicator
The ION MONITOR works as an electric charge indicator that displays the target's static charge,
polarity of the static charge, and condition of static elimination.
The plus and minus side LEDs will illuminate in response to the current charge level.
When static elimination is finished, the indicator in the middle will be illuminated. Therefore, the user
will know the process of static elimination.
„ Ion quantity indicator
The ION MONITOR works as an ion quantity indicator as well, and continuously monitors the quantity of ions generated
from the static elimination bar and displays the measurement in the colors of the LED.
When leftmost and rightmost indicators are illuminated green, it means that on the SJ-H* Series is fully generating ions.
* This cannot be used on the SJ-HA Series.
When the SJ-H01 Remote Control Console is used to set continuous generation of positive (or nega-
tive) ions, only two indicators on the positive (or negative) side will be illuminated.
The ION MONITOR does not display the target's static charge or condition of static elimination.
* This cannot be used on the SJ-HA Series.
„ Alarm function (ALM)
The ION/ALM/COND indicator will flash red three times per second and
an alarm signal (N.C. control signal) will be output if the internal circuit is
damaged or an abnormal electrical discharge occurs.
Then the SJ-H* Series will stop generating ions.
Alarm output will activate regardless of whether or not static elimination
is being interrupted manually or forcibly.
„ Ion level alarm function (ION)
The ION/ALM/COND indicator will flash twice per second and an alarm
signal (N.O. control signal) will be output if the quantity of ion generation is low due to the deterioration
of the electrode probes or the dirt on the electrode probes. Static elimination will not be interrupted in
this case. By using the SJ-H01 Remote Control Console, the warning output can be adjusted in four lev-
els according to the quantity of ions generated. (The warning output cannot be adjusted on the SJ-HA
Series).
The ion level warning can be a notice for the maintenance of the electromagnetic probes. Static elimi-
nation continues, so make sure to turn off the power when you perform maintenance on the electromag-
netic probes.
„ Condition alarm function (COND)
The ION/ALM/COND indicator will flash once per second and an alarm signal (N.O. control signal)
will be output if the installation environmental conditions (e.g., the temperature, humidity, and ambient metal) are
unstable and likely to affect the performance of static elimination adversely (e.g., the absorption of ions) caused
by ambient metal objects. Static elimination will not be interrupted in this case. By using the SJ-H01 Remote Con-
trol Console, the warning output can be adjusted in four levels according to the installation environment. (The
warning output cannot be adjusted on the SJ-HA Series)
For the purpose of energy saving, by short-circuiting the blue (DC GND wire) and pink (static elimina-
tion interruption input signal wire) wire terminals of the 10-pin I/O cable, only the static elimination
function will be turned OFF without turning off the SJ-H* Series.
Supplying clean air through the air duct on both ends of the static elimination bar will prevent the dust
accumulation on the electrode probes. The air purge widens the static elimination area and increases
the speed of static elimination as well.
* The air pressure indicates the pneumatic value at the route of the joint.
* Please contact the nearest KEYENCE office when using the air-purge function with intermittent air supply.
Filling a closed space with nitrogen will reduce the oxygen levels in the air to dangerous
levels.
Make sure that there is adequate ventilation when using the SJ-H* Series in an enclosed
space.
• Check that the air pressure does not exceed 0.5 MPa, otherwise an accident or malfunc-
tion may result.
• Please contact the nearest KEYENCE office when opening and closing the air duct.
• Be sure to provide clean, dry air to the static elimination bar. If the air contains water or oil,
air leaks or electrical discharges may occur in the static elimination bar, thus resulting in
accidents or malfunctions.
• Be sure to supply air from both sides (2 locations) of the SJ-H036*/060*/084*/108*/132*/
156*/180*/204*.
• Be sure to supply air from both sides (3 locations) of the SJ-H228*/252*/300*.
Provide clean, dry air free of organic matter at a condensation point of -25 °C and approximately 0.01
μm in mesh size.
„ Air supply method
As shown in the illustration below, remove the screw that block the air duct on either end of the static
elimination bar, connect a joint to the air duct, and provide air.
• Be sure to limit the tightening torque to 1.2 N •m (12 kg•cm 2 ) or less. Otherwise, an acci-
dent or product breakdown may occur.
• Be sure to supply only clean, dry air. The use of improper air may cause an accident or
product malfunctions.
• Be sure to supply air from both sides (2 locations) of the SJ-H036*/060*/084*/108*/132*/
156*/180*/204*.
• Be sure to supply air from both sides (3 locations) of the SJ-H228*/252*/300*.
Recommended joint
The recommended joint is the Tube Fitting (tube diameter :
φ 8 mm) manufactured by Pisco Co.
• Use a joint having a tube diameter of 8 mm on the SJ-H* Series.
• When providing air to more than one SJ-H* unit, check that each static elimination bar is provided with
air. If the air supply source is one, each static elimination bar may not be provided with enough air.
An optional air booster can be mounted to the SJ-H Series.
By using the air booster, the static elimination speed can be improved and the static elimination
range can be expanded.
For more details, see the air booster Instruction Manual.
* The air booster cannot be used with SJ-HA/SJ-HV/SJ-HC Series.
* Please contact the nearest KEYENCE office when using the air-purge function with intermittent air supply.
Filling a closed space with nitrogen will reduce the oxygen levels in the air to dangerous
levels.
Make sure that there is adequate ventilation when using the SJ-H* Series in an enclosed
space.
• Check that the air pressure does not exceed 0.5 MPa, otherwise an accident or malfunc-
tion may result.
• Please contact the nearest KEYENCE office when opening and closing the air duct.
• Be sure to provide clean, dry air to the static elimination bar. If the air contains water or oil,
air leaks or electrical discharges may occur in the static elimination bar, thus resulting in
accidents or malfunctions.
• Be sure to supply air from both sides (2 locations) of the air booster.
Provide clean, dry air at a condensation point of -25 °C and approximately 0.01 μm in mesh size.
Indicators
ION MONITOR Condition
OFF OFF Red
OFF OFF Yellow
OFF OFF Green
OFF Green OFF
Green OFF OFF
Yellow OFF OFF
Red OFF OFF
ION MONITOR Condition
Green OFF Green
Yellow OFF Yellow
Red OFF Red
OFF Red OFF
ION MONITOR Condition
OFF Red Red
Continuous positive ion generation
Red Red OFF
Continuous negative ion generation
Alarm output function
SJ-H
Series
SJ-HA
Series
SJ-HV
Series
SJ-HC
Series
Positively charged object
Negatively charged object
High
Middle
Low
Low
Middle
High
Large quantity of ion
Small quantity of ion
SJ-H
Series
SJ-HA
Series
SJ-HV
Series
SJ-HC
Series
Elimination interruption function
Air-purge function
Air booster
SJ-H
Series
SJ-HA
Series
SJ-HV
Series
SJ-HC
Series
SJ-H
Series
SJ-HA
Series
SJ-HV
Series
SJ-HC
Series
Danger
Caution
Caution
SJ-H036*/060*/084*/108*/132*/156*/180*/204*
SJ-H228*/252*/300*
R1/8
Rc1/8
Rc1/8
Rc1/8
Rc1/8 R1/8
R1/8 R1/8
Tube diameter φ 8 mm : PC8-01
NOTE
SJ-H
Series
SJ-HA
Series
SJ-HV
Series
SJ-HC
Series
Danger
Caution