TLV CV-COSR, Инструкция по эксплуатации

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172-65587MA-02 (CV-COSR Pneumatic Control Valve) 3 Jun 2019
20
Problem Cause Diagnosis Remedy (Countermeasure)
No movement at
all Air is not being
supplied to the
positioner Make sure that the compressor
is operating as it should; make
sure that the regulator
connected to the positioner
inlet is set Initiate the supply of the
designated air supply pressure
to the positioner
(Confirm product
specifications)
The input signal
wiring is incorrectly
connected Check to make sure the wiring
is connected to the correct
terminals and that the + and -
polarity is not reversed Correct the connections
The input signal is not
being input Check that 4 to 20 mA is being
input by the positioner
connection terminals Repair the operation signal
origin or repair the signal
wiring
Positioner’s internal
parts are broken
(The diaphragm is
cracked, etc.)
Check to see if any unusual
noise is coming from the
positioner Replace with a new positioner/
actuator unit
[Check to make sure that the
valve is not operating
(traveling) too often and that
the ambient temperature is not
too high]
There is water or oil
inside the positioner Check to see if there is water
or oil entrained in the supply
air; check to see if the humidity
at the control valve piping
location is too high Replace with a new positioner/
actuator unit and improve the
quality of the air supply
Valve opens and
closes too slowly There is water or oil
inside the positioner Check to see if there is water
or oil entrained in the air
supply Replace with a new positioner/
actuator unit and improve the
quality of the air supply
The filter regulator is
clogged Check the filter Clean the filter or replace with
a new filter
Valve travel is
unstable The setting of the
controller is faulty Check the set value based on
the controller’s PID parameters
Adjust the controller's setting
values