OSXAX238-EN
4/5
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
HANDLING & STORAGE
HANDLING
Proper care in handling the actuator should be taken
to prevent damage. Do not drop or throw it.
STORAGE
Store the actuator in the protected area from dust,
moisture, and direct sunlight. If possible, actuator
should be kept in the original packaging.
CHECKING
Check the product code, power supply, and voltage
before installation.
INSTALLATION
ENVIRONMENT
• Do not install in place where corrosive gas is present
or where vibration is heavy (0.5 G or more).
• When radiant heat causes the surface temperature
of the control unit to exceed 55 °C, provide an
appropriate shielding plate.
• If there is a possibility that the fluid and drive part
freeze, please take measures to prevent freezing.
POSITIONING
Should be positioned through 90° upward from
horizontal. Provide space around the product to
allow manual operation, inspection and replacement
work.
Maintenance space for upper part of actuator
PAX More than 90 mm
OTHER NOTES
Until the wiring is completed there must be no
condensation or flooding in the interior of the
actuator, after piping. Protective caps on the cable
gland are not waterproof.
WIRING
• Do not wiring outdoors on a rainy day.
• Check the power supply and voltage.
Connect the signal as shown in the wiring diagram.
Do not connect unnecessarily terminal.
• Use suitable flexible cable (5 to 10.5 mm).
Lock and seal the cable completely to prevent
condensation inside the actuator.
• Built-in terminal block can clamp up to 1.5 mm in
diameter without using solderless terminal.
• Allow proper cable slack for maintenance.
• Actuator should be electrically grounded.
Use the terminal marked ( ) inside the actuator.
PREVENT DEW CONDENSATION
• When installing the cover after wiring, perform the
bolt by the temporary tightening procedure and the
permanent tightening procedure to tightly and
securely tighten the rubber packing so that water
does not enter from the outside.
• Tighten the cable gland nut so that there is no
leakage from the wire entrance.
CONTROL
• Use shielded wire for signal wiring where high level
noise is generated or when the wiring distance is
long.
• Control with a 1 to 5 V input signal becomes an input
resistance 250 . Provide a voltage that can safely
20 mA or more than.
• Check whether the MODE change DIP SW on a
circuit board substrate is set up correctly.
When wiring, if wiring of a signal is mistaken, it will
not operate correctly. Contact us when you use two
valve or more by one controller or indicator.
• Input signal circuit is non-isolated.
Do not connect DC (-) wire to other DC (-) common.
• The input signal and operation mode are set as
follows. (Factory shipped)
Input signal 4 to 20 mA / 1 to 5 V
Operation mode Mode A
Operation SHUT by decreased signal
OPEN by increased signal
OPERATION
TESTING
• Make sure that power supply voltage is correct. Also
check operating position, wiring, speed and signals.
• During trial operation, check that valve movement
and output signal are correct.
CONFIRM THE OPERATING CONDITION
• Adjust fluid condition, controller setting, sensor etc.
so that stable control is achieved.
• When used in an unstable control state, the life of
the actuator and the valve will be shortened.
• The desired control state is stable at the target value.
Adjust the PID setting value of the controller when
overshooting the target value greatly, when not
converging for a long time or hunting operation. Also,
when the time delay is large, please consider the
sensor position.
ATTENTION
• Be sure to set the DIP-SW before turning on the
power supply.
• Keep power supplied for built-in space heater to
prevent condensation inside actuator.
• Do not touch the moving parts of actuator in
operation.
• Never put anything on the actuator or make it into a
foothold.
