Azbil ACTIVAL VY54X0F Series User manual

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Specifications/Instructions
ACTIVAL™
Motorized Three-Way Valve
with Flanged-End Connection (JIS 10K / FC200)
General
ACTIVAL Model VY54X0F is a series of motorized three-way
valves with flanged connection. The valve and the actuator
are integrated in a single unit.
The valve size ranges from DN50 (2”) to DN80 (3”), and the
valve body rating corresponds to JIS* 10K.
The actuator has a reversible synchronous motor, which
operates at a low voltage of 24 V AC.
4 kinds of control signals are available to operate the
ACTIVAL.
1. Nominal 135 Ωfeedback potentiometer (built-in)
provides proportional control in combination with a DDC*
controller (e.g., Infilex™GC Model WY5111).
2. Nominal 135 Ωresistance input
provides proportional control in combination with a
proportional electric controller (e.g., Neostat™Model
TY900XZ, Model T991).
3. 4-20 mA DC input
provides proportional control in combination with a DDC
controller (e.g., Infilex GC Model WY5111, Model R15).
4. 2-10 V DC input
provides proportional control in combination with a DDC
controller (e.g., Infilex AC Model WY5117).
Notes:
∗JIS: Japanese Industrial Standards
∗DDC: Direct digital control
Features
•Compact and lightweight.
•Valve and actuator integrated in a single unit.
•A variety of control signals available:
- Nominal 135 Ωfeedback potentiometer
- Nominal 135 Ωresistance input
- 4-20 mA DC input
- 2-10 V DC input
•Durable design.
•Low power consumption.
•Linear flow characteristics.
•2-10 V DC output (for position feedback) available with
4-20 mA DC input type and 2-10 V DC input type.
IMPORTANT:
To control ACTIVAL with a third-party controller,
please consult with Azbil Corporation’s sales
personnel.

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Safety Instructions
Please read instructions carefully and use the product as specified in this manual. Be sure to keep this manual near by for ready
reference.
Usage Restrictions
This product is targeted for general air conditioning. Do not use this product in a situation where human life may be affected. If
this product is used in a clean room or a place where reliability or control accuracy is particularly required, please contact Azbil
Corporation’s sales representative. Azbil Corporation will not bear any responsibility for the results produced by the operators.
WARNING
•This product weighs 18 kg or over (depending on the models). To prevent hazardous accident and severe injury,
move or carry the product with enough manpower or using a vehicle.
•Do not disassemble the product. Disassembly may result in electrical shock or equipment damage.
CAUTION
•This product must be operated under the operating conditions (power, temperature, humidity, vibration, shock,
installation position, atmospheric condition, etc) specified in this manual to prevent equipment damage.
•This product must be operated within its rated operating ranges specified in this manual. Failure to comply will
cause equipment damage.
•Operate the product within the service life, and avoid application that keeps product operating cycle excessively
frequent so as not to shorten its service life.
•Installation and wiring must be performed by qualified personnel in accordance with all applicable safety
standards.
•All wiring must comply with local codes of indoor wiring and electric installation rules.
•Install the product in the position as specified in this manual. Excessively tight connection of the valve to a pipe
and improper installation position may damage the valve.
•After installation, make sure no fluid leaks from the connecting parts of valve and pipes. Incorrect piping may
cause fluid leakage.
•Use full gaskets for flat face flanges to prevent the product damage or fluid leakage.

•Do not allow any foreign substance inside the piping. Flush the piping so that no foreign substance remains.
Attach a strainer (with 40 or more meshes) in a pipe on the inflow side of the product to prevent equipment
damage.
•Do not leave the controlled fluid frozen to prevent equipment damage or fluid leakage.
•Do not put heavy load on the actuator.
•Do not install the product in a location close to a steam coil or a hot-water coil. High temperature radiation may
result in an actuator malfunction.
•Avoid touching the installed product (valve body, yoke, joint). When being used to control hot water, it reaches
high temperature and may cause burn injury.
•Disconnect power from the product before performing any wiring or maintenance to prevent equipment damage.
•Use crimp terminal lugs with insulation for electric wires to be connected to the screw terminals.
•Make sure all the wires are tightly connected to the screw terminals. Loose connection may cause fire or heat
generation.
•Avoid using the product (actuator, valve, and other components) in a corrosive gas including oxide gas and
explosive gas.
•Dispose of this product as an industrial waste in accordance with your local regulations. Do not reuse all or part of
this product.

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Model Numbers
The following model numbers are applicable to the ACTIVAL Model VY54X0F series.
Model number label is attached to the yoke. Control signal type is indicated on the actuator label and the wiring diagram label as
follows.
•Nominal 135 Ωfeedback potentiometer:
•Nominal 135 Ωresistance input:
•4-20 mA DC input :
•2-10 V DC input:
Actuator / Valve Actuator ValveBase
model
No.
Control
signal
Rating /
Material Type ⎯Size/Cv Description
VY54 Motorized three-way valve with flanged connection
1 Nominal 135 Ωfeedback potentiometer
2 Nominal 135 Ωresistance input
3 4 mA DC to 20 mA DC input with 2 V DC to 10 V DC feedback output
4 2 V DC to 10 V DC input with 2 V DC to 10 V DC feedback output
0 JIS 10K / JIS FC200
F
IEC IP54 protected and standard torque type actuator
with terminal block
(Mountable valve sizes: DN50 to DN80)
00 ⎯
51 DN50 (2”) / 45 in Cv value
61 DN65 (21/2”) / 70 in Cv value
81 DN80 (3”) / 100 in Cv value
2-10 V
F.B. Pot
135
Ω
4-20 mA

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Specifications
For weight of the ACTIVAL, refer to the table shown in the section Dimensions.
Valve
Item Specification
Model Three-way valve with flanged-end connection
Body pressure rating JIS 10K (Max. pressure 1.0 MPa)
Model number Nominal size (in inch) Cv Maximum pressure drop
VY54X0F0051 DN50 (2”) 45 0.3 MPa
VY54X0F0061 DN65 (21/2”) 70 0.2 MPa
Size, Cv,
Maximum pressure drop (MPa)
VY54X0F0081 DN80 (3”) 100
0.15 MPa for mixing use
0.1 MPa for diverting use
Body Gray cast iron (equivalent to JIS FC200)
Retainer Stainless steel
Ball, stem Stainless steel
Seat ring PTFE with filler
Gland packing Inorganic fiber
Materials
Gasket Non-asbestos joint sheet
End connection JIS 10K flanged-end, flat face flange (FF)
Applicable fluids Chilled/hot water, brine (ethylene glycol solutions, 50 % max.)
Allowable fluid temperature 0 °C to 100 °C (Non-freezing)
Flow characteristics Linear characteristic (See Fig. 1.)
Rangeability 30 : 1
Seat leakage 0.1% of the rated Cv value
Paint of body Gray (equivalent to Munsell 5B 4/1)
Actuator to be combined Integrated with the valve
Linear flow characteristic diagram Flow direction
Figure 1. Linear flow characteristic diagram
Cv value / Rated Cv value (%)
A
ctuator input signal (%)
Port B Port A
Composite flow characteristic
Mixing:
Port A/Port B to Port AB
Diverting:
Port AB to Port A/Port B
Figure 2. Flow direction

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Actuator
Item Specification
Power supply 24 V AC ±15 % 50 Hz/60 Hz
Applicable valve size DN50 to DN80 of standard torque type
Power consumption Nominal 135 Ωfeedback potentiometer type: 7 VA
Other types (nominal 135 Ωresistance input, 4 mA DC to 20 mA DC input, 2 V DC to 10 V DC input):
8 VA
Timing 63 ±5 sec. (50 Hz) / 53 ±5 sec. (60 Hz)
Control signal Nominal 135 Ωfeedback potentiometer
Feedback potentiometer Total resistance: Nominal 135 Ω
Max. applied voltage: 5 V DC
Nominal 135 Ωresistance input
4 mA DC to 20 mA DC input (input impedance: 100 Ω)
2 V DC to 10 V DC input (input impedance: 150 kΩor higher)
Analog output (only with 4 -20 mA DC and
2-10 V DC inputs)
Range: 2 V DC (0 %) to 10 V DC (100 %)
Allowable load resistance: 10 kΩor higher (Max. 1 mA)
Case Die cast aluminum
Top cover, terminal cover Polycarbonate resin (Color: gray)
Materials
Yoke Steel plate
Case NoneSurface finishing
Yoke Electro-galvanized (Bright chromate finish)
Valve position indication Pointer located at the bottom of the actuator shows the position by pointing at the value of the scale
(0 to 100) on front, rear, and bottom sides.
(0: B-AB (Port B fully open), 100: A-AB (Port A fully open)
Manual operation Available. Refer to the section Manually opening/closing the ACTIVAL.
Wires connection M3.5 screw terminal connection
Enclosure rating IEC IP54 (splash-proof and dust-proof)
Insulation resistance Between terminal and case: 5 MΩor higher at 500 V DC
Dielectric strength Between terminal and case: 500 V AC/min with 5 mA or less leakage current
Position for shipment Port A in 100 % (fully open)
Valve and actuator (as a single unit) specifications
Item Specification
Environmental conditions Rated operating conditions Transport/storage conditions (packaged*2)
Ambient temperature*1-20 °C to 50 °C -20 °C to 70 °C
Ambient humidity 5 %RH to 95 %RH
Vibration 4.9 m/s2(10 Hz to 150 Hz) 19.6 m/s2(10 Hz to 150 Hz)
Notes: ∗1 Do not allow the fluid to freeze.
∗2 Actuator shall be packed during transport.
Installation locations Indoor / outdoor (Keep away from direct sunlight.)
Installation orientation Installable in any position ranging from upright to sideways (90°tilted.)
*Always install in upright position outdoors.
Position for shipment Port A 100 % (fully open) preset at factory.
Option and auxiliary device
Item Specification
Seal connector
(Part No. 83104346-003)
Diameter of wire (mm): φ7 to φ9
(Seal connector is necessary for IEC IP54 protection.)
Auxiliary switches
(Part No. 83165274-001)
Number of switches: 2 (SW A and SW B)
Maximum applied voltage/current: 30 V DC / 3 A DC
Actuating position
SW A: Adjustable between 0 % (fully closed) and 100 % (fully open)
SW B: Adjustable between 0 % (fully closed) and 100 % (fully open)
Auxiliary potentiometer
(Part No. 83165275-001)
Number of potentiometer: 1
Total resistance: Nominal 1 kΩ
Operating position: 0 % (fully closed) to 100 % (fully open)
Max. applied voltage: 5 V DC
Note:
Either of an auxiliary switch or an auxiliary potentiometer can be added, but not both.
CE Marking Conformity
This product complies with the following Electromagnetic Compatibility (EMC).
EMC : EN61000-6-2, EN55011 Class A

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Dimensions
Model number Valve size
(DN) H (mm) H1(mm) H2(mm) L (mm) L1(mm) t (mm) φC (mm) φD (mm) φh (mm) N Weight
(kg)
VY54X0F0051 50 269.5 131 125 204 102 20 120 155 19 4 14
VY54X0F0061 65 274 135.5 130 230 115 22 140 175 19 4 18.5
VY54X0F0081 80 278.5 140 150 240 120 22 150 185 19 8 20
Figure 3. Dimensions (mm)
Parts Identification
Figure 4. Parts identification
Top cover
Terminal cover
Top cover
Knockout hole
Yoke
A
ctuato
r
Valve bod
y
Pointer
Stem
Seat ring
Retainer
: Heat insulation
Joint
Gland packing
Gasket
Ball
O-ring
∗
Note:
Leave a clearance of 300 mm if you require to open the top cove
r
after the ACTIVAL is installed.
Min. 300 70 70 Min. 300
H
H2H1
L1
L
t
φ
C
Min. 300 82 85 Min. 100* See Note.
N ×φh
t
φD

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Installation
Precautions for installation
CAUTION
•Install the product in the position as specified in this manual. Excessively tight connection of the valve to a pipe
and improper installation position may damage the valve.
•After installation, make sure no fluid leaks from the connecting parts of valve and pipes. Incorrect piping may
cause fluid leakage.
•Do not allow any foreign substance inside the piping. Flush the piping so that no foreign substance remains.
Foreign substance may damage the valve.
•ACTIVAL Model VY54X0F is the valve and actuator integrated into a single unit. Do not combine the valve with any other
actuator, or do not combine the actuator with any other valve.
•To remove foreign substances inside the pipes, install a strainer (with 40 or more meshes) on the inflow side of each valve.
In case that the strainers cannot be installed on the inflow side of each valve, install it on the pipe diverting sections
(sections diverting from main piping system to sub piping system).
•The arrow indicated on the valve body (port A/port B →port AB) is the flow direction of the process fluid for mixing use. This
product also can be installed for diverting use (port AB →port A/port B).
Installation location
CAUTION
•Avoid using the product in an atmosphere containing oxidizing or explosive gas since it may corrode the actuator,
valve, or their components.
•The actuator may malfunction if being exposed to high heat radiation. Do not install it near by steam coil or high
temperature water coil.
IMPORTANT:
•The top and the terminal covers might be corroded by some chemical and organic solvent/vapor. Do not clean
the ACTIVAL using such substances, or do not expose the ACTIVAL to such substances.
•
A
lthough the ACTIVAL can be used in high humidity environments (max. 95 %RH), do not immerse the
actuator in water.
•Although the ACTIVAL can also be used outdoors, be sure not to expose the ACTIVAL to direct sunlight.
•Install the ACTIVAL in a position allowing easy access for maintenance and inspection. Fig 3 shows the minimum
clearance for maintenance and inspection. When installing the ACTIVAL in a ceiling space, provide an access hole within
the 50 cm radius of the ACTIVAL. And, place a drain pan under the valve.
•Do not mount the ACTIVAL on a pipe where water hammer occurs, or where solid objects including slug may accumulate.
Identification between Ports A and B
Valve body without heat insulation wrapped:
Identify ports A and B with the letters ‘A’ and ‘B’ marked on the valve body.
Valve body with heat insulation wrapped:
Identify ports A and B with the raised bar shape on the valve bonnet, as
shown in Fig. 5.
Figure 5. Identification between Ports A and B
Bar shape
Facing the bar shape,
Left: Port A
Right: Port B

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Mounting position
The ACTIVAL can be mounted in any position ranging from upright to sideways (90°tilted). The ACTIVAL should be installed
with its actuator vertically positioned above the valve body. (See Fig. 6.) However, the ACTIVAL must be installed always in
upright position outdoors.
Figure 6. Mounting position
Piping
•Check that the model number of the product is what you ordered. The model number is shown on the label attached to the
yoke.
•Install a bypass pipe and gate valves on the inflow, outflow, and bypass sides. If difference between the coil side pipe
resistance (which contains coil resistance) and the bypass side pipe resistance are extremely large, use the gate valves to
adjust the pressure. Also, install a strainer with 40 or more meshes on the inflow side.
•When installing the ACTIVAL to pipes, do not allow any object, such as chips, to get inside a pipe or valve. Valve cannot
fully close, or the valve seat may get damaged causing fluid leakage, due to an object jammed inside the valve.
•When piping, do not apply too much sealing material, such as solidifying liquid and tape, to the pipe connection sections so
that these materials flow into the valve. Valve cannot fully close, or the valve seat may get damaged causing fluid leakage,
due to the sealing material jammed inside the valve.
•Before activating the ACTIVAL, fully open (in 100 % position) the valve and flush the pipes (flush per each port) at the
maximum flow rate to remove all the foreign substances. (Factory preset position: Port A in 100 %)
Heat insulation
Do not apply heat insulation to the actuator or to the yoke, as shows in Fig. 4. If the yoke and the actuator are covered
with insulation material, the pointer cannot be checked and may be distorted.
Factory preset position
The actuator shaft is positioned at 100% (Port A in fully open position) for shipment. The shaft is completely turned clockwise,
and the pointer points at “100”. (See Fig. 7.)
Figure 7. Pointer position for shipment
Correct mounting Incorrect mounting
Position indication
0: Port A fully closed (Ports B and AB fully open)
100: Port A fully open (Ports A and AB fully open)
Pointer

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Application examples
For diverting valve application For mixing valve application
Figure 8. Example of diverting valve application Figure 9. Example of mixing valve application
Installation examples
For diverting valve installation For mixing valve installation
Figure 10. Example of diverting valve installation Figure 11. Example of mixing valve application
Manually opening/closing the ACTIVAL
IMPORTANT:
•Manually opening/closing the ACTIVAL with the power (24 V AC) applied may damage the actuator.
•To manually open/close the ACTIVAL, do not turn the joint beyond the fully open (100)/closed (0) mark.
•To manually open/close the ACTIVAL, slowly turn the joint. If shock is sent to the actuator, the actuator may
get damaged.
Disconnect the power from the ACTIVAL before manually operating the ACTIVAL. As shown in Fig. 12, from the front of the
ACTIVAL, hold the joint using a tool such as a wrench, and turn the joint slowly toward the set position.
Figure 12. Manual open/close operation
Auxiliary switch / Auxiliary potentiometer (optional)
IMPORTANT:
•The auxiliary switch/potentiometer is installed on site. Refer to the instructions supplied with the auxiliary
switch/potentiometer for installation.
•Do not open the top cover except when adjusting the auxiliary switch/potentiometer. Close the top cover
instantly after adjusting the auxiliary switch/potentiometer.
•Do not put any load on the top cover.
A
B
AB
AB
A
B
Upright
90°tilted
A
B
AB
A
AB
B
Upright
90°tilted
B A
B A
AB AB
B A
B A
AB AB
Hold the joint using a wrench
and turn slowly.

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Procedure to change the actuator mounting position
IMPORTANT:
•Do not change the combination of the valve, yoke, and actuator.
•Set the port A of the valve and the actuator in 100 % position when changing the mounting position. If the valve
with port A in 0 % position is assembled with the actuator in 100 % position, the actuator puts torque on the
closed port A of the valve, and the gear of the actuator gets damaged.
1) Remove the screws connecting the actuator and the yoke. Lift the actuator and detach it from the yoke. Make sure that the
mark on the valve stem and raised bar shape on the valve bonnet face the same direction.
<Step 1 in Fig. 13>
2) Remove the screws connecting the yoke and the valve. <Step 2 in Fig. 13>
3) Change the facing direction of the yoke. The yoke and actuator can be horizontally rotated every 90°(0°/90°/180°/270°
from the factory preset position) to mount onto the valve. <Step 3 in Fig. 13>
4) A thermal insulation sheet is inserted between the yoke and the valve. When changing the mounting positions, reinsert the
sheet and then fit the yoke into the new mounting position.
5) Before fixing the yoke to the valve with the screws, check that the actuator engages correctly with the valve stem (at the new
mounting position). Check that the pointer of the actuator indicates 100 % position as well. Then, fix the yoke to the valve
with bolts. <Step 3 in Fig. 13>
6) Mount the actuator. Place the actuator, with its facing direction changed, on the yoke, and fix them with the screws.
<Step 4 in Fig. 13>
7) Check that the ACTIVAL with the mounting position changed operates smoothly.
Figure 13. Changing the actuator mounting position
Step 1 Step 4
Lift off the actuator.
Change the actuator mounting
position, and remount the
actuator on the yoke.
Step 2 Step 3
Detach the yoke from the
valve.
Change the yoke mounting
position, and remount the yoke
on the valve.
Thermal insulation sheet
Mark
Valve stem
Raised bar shape

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Wiring
CAUTION
•Disconnect power from the product before performing any wiring or maintenance (installation) to prevent
equipment damage.
IMPORTANT:
•The ACTIVAL is designed for 24 V AC power supply voltage.
Do not apply any other power voltage (e.g., 100 V AC, 200 V AC) to the ACTIVAL.
•For 2-10 V DC input type and 4-20 mA input type, make sure the polarity of the power supply and 2-10 V DC
feedback output referring to the wiring diagrams. Incorrect wiring may result in PCB (print circuit board)
burnout.
•To prevent damage, cover the terminals except when connecting/disconnecting wires.
•Do not connect 24 V AC power to the terminals 4 to 7. (Max. applicable voltage: 5 V DC)
Wiring precautions
1) To lead the wires into the terminals, cut out a knockout hole for a wiring port. Two knockout holes are provided on the
bilateral sides of the actuator terminals. Select a knockout hole according to the conduit mounting direction, and cut it out by
lightly knocking the hole using a screwdriver.
Figure 14. Knockout hole for wiring port
2) Unscrew the 3 setscrews (M4 ×10) of the terminal cover and remove the terminal cover, as shown in Fig. 15.
Figure 15. Terminal cover removal
3) Correctly connect the wires to the terminals with M3.5 screw terminal lugs, referring to Figs 16 to 24.
To keep IP54 protection (dust-proof and splash-proof),
Use a water-proof connector for the ACTIVAL in a high-humidity environment or outdoor location.
•Be sure to completely close the terminal cover and the top cover.
•Waterproof the wiring port.
- For cable connection, use a water-proof connector. (Seal connector Part No. 83104346-003 is recommended.)
- For conduit connection, use a water-proof plica tube or the like.
Knockout hole
for wiring port
1. Unscrew the setscrews.
2. Remove terminal cover.
Terminal cover
Setscrews

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Terminals connection
Model VY5410F00XX
Model VY5420F00XX Model VY5430F00XX
Model VY5440F00XX
1 2 3 4 5 6 7
T1T2Vacant W B R Vacant
24 V AC
power supply
Inputs from
controlle
r
1234567
T1T2Vacant + - + -
24 V AC
power supply
4-20 mA DC
inputs from
controller
2-10 V DC
feedback output
Figure 18. Terminals connection of Model VY5420F00XX
(Nominal 135 Ωresistance input type)
1 2 3 4 5 6 7
Vacant
Close
(C)
Open
(O)
Close
(C)
Open
(O)
Figure 16. Terminals connection of Model VY5410F00XX
(Nominal 135 Ωfeedback potentiometer type)
∗
Note:
Controller that receives voltage
between the terminals 4 and 6 as
feedback signal is
recommended to connect.
4 5 6
E
V
E
V
: Circuit of recommended controller
: Voltage applied from controller
: Voltage between terminals 4 and 6
Figure 17. Circuit of recommended controller
Note: Terminals 2, 5, and 7 are connected inside the actuator.
Figure 19. Terminals connection of Model VY5430F00XX
(4-20 mA DC input type)
1 2 3 4 5 6 7
T1T2Vacant + - + -
24 V AC
power supply
2-10 V DC
inputs from
controller
2-10 V DC
feedback output
Note: Terminals 2, 5, and 7 are connected inside the actuator.
Figure 20. Terminals connection of Model VY5440F00XX
(2-10 V DC input type)

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Connection examples (Connection to Azbil Corporation’s controllers)
Connection to Infilex™GC Connection to Neostat (Model TY900XZ)
Figure 21. Connection example: Model VY5410F to Model WY5111 Figure 22. Connection example: Model VY5420F to Model TY900XZ
Connection to Model R series controller Connection to Infilex™AC
Figure 23. Connection example: Model VY5430F Figure 24. Connection example: Model VY5440F to Model WY5117
to Model R35TC0/R36TC0
W
B
R
4 W
5 B
6 R
1 T1
2 T2
Transformer
Power
supply
Model VY5420F
(Nominal 135 Ωresistance input)
Neostat
Model TY900XZ
Wire color
W: White
B: Blue
R: Red
4 +
5
6 +
7
1 T1
2
Model R35TC0/R36TC0
Power
supply
Model VY5430F
(4-20 mA DC input with
2-10 V DC output type)
+ 13
- 14
Transformer
+
-
Position indicator
T2
-
-
4 +
5
6 +
7
1 T1
2
Infilex AC
Model WY5117
Power
supply
Model VY5440F
(2-10 V DC input with
2-10 V DC output type)
+37
-38
Transformer
+
-
Position indicator
T2
-
-
1
2
3
4
5
6
Infilex GC
Model WY5111
Power
supply
Model VY5410F
(Nominal 135 Ωfeedback
potentiometer type)
1
2
3
5
6
7
Transformer
MM
output

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Internal Connection of Auxiliary Switch / Auxiliary Potentiometer
Auxiliary switch Part No. 83165274-001
Switches A and B actuating position: Adjustable between 0 % (fully closed) and 100 % (fully open)
Figure 25. Internal connection of Part No. 83165274-001
Auxiliary potentiometer Part No. 83165275-001
Potentiometer operating position: Adjustable between 0 % (fully closed) and 100 % (fully open)
Figure 26. Internal connection of Model 83165275-001
OP1
OP2
OP3
N.C.
N.O.
Common
OP4
OP5
OP6
N.C.
N.O.
Common
Switch A Switch B
OP1
OP2
OP3
Open
Close

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Inspection and Maintenance
CAUTION
•Avoid touching the installed ACTIVAL (valve body, yoke, joint). When being used to control hot water, it reaches
high temperature and may cause burn injury.
•Inspect the ACTIVAL according to Table 1.
•Manually open/close the ACTIVAL at least once a month if it is left in inactive state for a long period.
•Visually inspect the fluid leakage of the valve and the actuator operations every six months. If any of the problems
described in Table 2 are found, take corresponding actions shown in the table.
If your problem is not solved by the corresponding action, please contact Azbil Corporation near you.
Table 1. Inspection items and details
Inspection item Inspection interval Inspection detail
Visual inspection Semiannual •Fluid leakage from the gland and the flange face
•Loosened bolts
•Valve and actuator damages
Operating status Semiannual •Unstable open/close operation
•Abnormal noise and vibration
Routine inspection Any time •Fluid leakage to the outside
•Abnormal noise and vibration
•Unstable open/close operation
•Valve hunting
Table 2. Troubleshooting
Problem Part to check Action
Fluid leaks from the flange face. Loosened flange bolts
Gasket on the flange face
Misaligned piping
Tighten the flange bolts.
Replace the gasket.
Redo piping.
Fluid leaks from the gland part. ⎯Consult with our sales/service personnel.
Fluid leaks from the bonnet. Loosened bolts Tighten the bolts.
Valve does not operate smoothly /
valve stops halfway /
valve does not operate at all.
Conditions of the power applied and of the input
signal applied
Loosened terminals
Wiring condition / disconnected wires
Check the power supply and the controller
connected to.
Tighten the terminals.
Check the wiring.
Fluid leaks to the outside of the valve
when the ACTIVAL is in fully closed
position.
Actuator pointer not pointing to fully closed
position
Fully close the ACTIVAL.
The valve vibrates or produces an
abnormal noise.
Primary pressure condition
Differential pressure condition
Adjust the mounting position and change the
installation location.
The auxiliary switch does not operate. Auxiliary switch (cam switch) condition
Loosened terminals
Wiring condition / disconnected wires
Redo the cam switch setting.
Tighten the terminals.
Check the wiring.
The auxiliary potentiometer does not
operate.
Condition of resistance
Loosened terminals
Wiring condition / disconnected wires
Check the resistance value (1 kΩ).
Tighten the terminals.
Check the wiring.
Valve hunting occurs. Secondary pressure condition
Differential pressure condition
Control stability
Adjust the mounting position and change the
installation location.
Correct the control parameter setting of
controller.
Voltage/current input signal disagrees
with the feedback output signal.
To completely shut off the valve, valve open and close (0-100% position) operation is controlled by
10-90 % range of actuator voltage/current input signal. Voltage/current input signal therefore
disagrees with the feedback signal, and this is not an error.

AB-6303
ACTIVAL is a trademark of Azbil Corporation in Japan or in other countries.
Specifications are subject to change without notice.
Building Systems Company
1-12-2 Kawana, Fujisawa, Kanagawa
251-8522 JAPAN
http://www.azbil.com
Rev. 7.0 Dec. 2015 AB-6303
(J: AI-6303 Rev. 4.0)
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