Azbil AB-7352-U User manual

AB-7352-U
© 2015–2016 Azbil Corporation All Rights Reserved.
1
Specifications/Instructions
ACTIVAL
Motorized Two-Way Valve with Flanged-End Connection
<4-20 mA DC Input with 4-20 mA DC Feedback Output>
(ANSI Class125 equivalent / Gray cast iron)*
(Spring Return Type Actuator)
General
ACTIVALModels VY5198H and VY5198K are series of
motorized two-way valves with flanged-end connection.
Valve and actuator are integrated in a single unit.
Valve size ranges from 11/2” to 3”.
Actuator has a reversible synchronous motor, which
operates at a low voltage of 24 V AC. Since the actuator fully
closes the valve in case of power failure, it is suitable for
failsafe application.
4 to 20 mA DC input control signal provides proportional
control in combination with a single loop controller (e.g.,
Model SDC35/SDC36).
Features
Compact and lightweight:
Rotary motor actualizes small body and light weight.
Valve and actuator integrated in a single unit:
Pre-assembled body requires no adjustment.
Valve for chilled/hot water control and for steam control
applicable to high differential pressure, large Cv value,
high rangeability, and low leakage.
Durable actuator with low power consumption.
Equal percentage flow characteristics.
4 to 20 mA DC output available for position feedback.
Open/close changeover for input signal failure:
Actuator fully opens/closes valve in case that the control
signal is not input to the actuator. (Default: Fully open)
Direction changeover of control action:
Open/close action by 4 to 20 mA DC input signal is
reversely controllable.
Normal action 4 mA: 0 % to 20 mA: 100 %
Reverse action 20 mA: 0 % to 4 mA: 100 %.
(Default: Normal action)
Adjustable dead band*:
Dead band width can be narrowed to more precisely
operate valve actuator.
Actuator is not operated by input signal changed less than a
certain amount. This amount of change is called dead band.
Spring return actuator:
Actuator automatically closes the valve in 0 % position in
case that the power is down.
CE Marking certified:
ACTIVAL Models VY5198H and VY5198K conform to all
the applicable standards of CE Marking.
* This
p
roduct was desi
g
ned and manufactured conformin
g
to the ISO
(
International Or
g
anization for Standardization
,
PN16/GG-20
)
.

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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 nearby for quick
reference.
Usage Restrictions
This product is targeted for general air conditioning. Do not use this product in a situation where human life might be affected.
Also, do not install this product in an atmosphere containing explosive gas or flammable gas.
If this product is used in a clean room or a place where particularly high reliability or control accuracy is required, please contact
our sales representative. Azbil Corporation will not bear any responsibility for the results produced by the operators.
Warnings and Cautions
WARNING Alerts users that improper handling might cause death or serious injury.
CAUTION Alerts users that improper handling might cause minor injury or material loss.
Signs
Alerts users possible hazardous conditions caused by erroneous operation or erroneous use. The symbol inside 
indicates the specific type of danger. (For example, the sign on the left warns of the risk of electric shock.)
Notifies users that specific actions are prohibited to prevent possible danger. The symbol inside graphically
indicates the prohibited action. (For example, the sign on the left notifies that disassembly is prohibited.)
Instructs users to carry out a specific obligatory action to prevent possible danger. The symbol inside graphically
indicates the actual action to be carried out. (For example, the sign on the left indicates general instructions.)
WARNING

Some of the product models weigh more than 40 lb (18.1 kg). Carefully move the product with a vehicle or enough
manpower in an appropriate manner. Careless lift or accidental drop of the product might cause injury or product
damage.
Detach the cover only when wiring, setting the product or maintenance and reattach the cover after wiring, setting
the product or maintenance. Failure to do so might cause electric shock.
Before wiring, maintenance or setting the selector switches, be sure to turn off the power to the product (including
the optional devices). Failure to do so might cause electric shock or device failure.
Do not disassemble the product. Disassembly might result in electrical shock or equipment damage.
Do not disassemble the spring unit of the actuator. The spring might rotate too fast or jump out of the actuator due
to disassembly, resulting in injury.
Do not detach the actuator from the valve in open position. Detaching the actuator in open position might cause
injury.
CAUTION (1/2)
Install and use this product under the operating conditions (for temperature, humidity, power, vibration, shock,
mounting direction, atmosphere, etc.) listed in the specifications. Failure to do so might cause fire or device failure.
Installation and wiring must be performed by qualified personnel in accordance with all applicable safety standards.

Use the product within its lifespan and avoid instrumentations that keep the product to operate excessively.
Continued use beyond the lifespan might cause fire or device failure. Service life of the actuator spring is 30,000
returns. Do not keep using the product beyond the service life.
All wiring must comply with applicable codes and ordinances.
Provide circuit breaker/fuse protection when powering this product.
Provide a circuit protector (e.g., a fuse, circuit breaker) for the control panel to ensure your safety.
Keep the products in package for storage. Failure to do so might damage or stain the products.
Set the selector switches using a pen nib or a finger. Do not use a tool such as a screwdriver. Such a tool might
damage the selector switches or the PCB.

AB-7352-U
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CAUTION (2/2)
Use full face gaskets for flat face flanges to prevent the product damage or fluid leakage.
For installation, do not mount the valve in an improper position or overtighten the bolts on the flange. Doing so
might damage the product.
After installation, make sure no fluid leaks from the valve-pipe connections. Incorrect installation might cause fluid
leakage.

Install the product so that no foreign objects remains inside the pipes. Be sure to provide a strainer on the inflow
side of the piping. Flush the piping to remove the foreign objects after installation. Foreign objects inside the piping
might damage the product..
Do not allow the fluid to freeze. Doing so might damage the valve body and cause fluid leakage.
Do not put load or weight on the actuator of the product. Doing so might damage the product.
Do not install the product nearby a steam coil, pressurized hot-water coil, or any high heat source. High
temperature radiation might cause malfunction of its actuator.
Do not use the product in an atmosphere corrosive to the actuator, valve, and their components. Doing so might
damage the product.
Do not carelessly touch this product when being used to control hot water or steam. The product temperature is hot,
and you might get burned.
Use crimp terminals with insulation for connections to the product terminals. Failure to do so might cause short
circuit leading to fire or device failure.
Firmly tighten the terminal screws. Insufficient tightening of the terminal screws might cause fire or overheating.
Do not touch the moving parts of the product. Doing so might cause injury.
Dispose of this product as industrial waste in accordance with your local regulations. Do not reuse all or part of the
product.
Do not allow any shock on the product. Doing so might damage the product.
Do not disassemble the product. Doing so might cause device failure.
During engineering work, do not touch the uninstructed area other than the setting switches. Doing so, you might
be burned. Temperature of some parts of the actuator becomes high.
IMPORTANT:
In case an Azbil Corporation product fails, you are required to provide your Equipment with safety design such
as fool-proof design*1, and fail-safe design*2(anti-flame propagation design, etc.), whereby preventing any
occurrence of physical injuries, fires, significant damage, and so forth. Furthermore, fault avoidance*3, fault
tolerance*4, or the like should be incorporated so that the said Equipment can satisfy the level of reliability and
safety required for your use.
*1. A design that is safe even if the user makes an error.
*2. A design that is safe even if the device fails.
*3. Avoidance of device failure by using highly reliable components, etc.
*4. The use of redundancy.
IMPORTANT:
When installing the product with a flange gasket, do not allow the gasket going inside the pipe.
The service life of ACTIVAL operated with small dead band can be shortened since the ACTIVAL operates
more frequently with small dead band than with normal dead band.
To operate the product with small dead band, provide shielded cable for input/output signal lines and power
line. Unshielded cable might cause error due to noise

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Model Numbers
Model VY5198K00XXS-147/VY5198H00XXS-147 is the model for the valve and actuator integrated into a single unit.
The model number label is attached to the yoke. The 4 to 20 mA control signal is indicated on the actuator label and on the wiring
diagram.
Base
model
number
Actuator/valve Actuator Valve
Fixed Description
Control
signal
Rating/
material Type Nominal size/Cv
VY51 Motorized two-way valve with flanged-end connection
9 4 mA DC to 20 mA DC input with 4 mA DC to 20 mA DC feedback output
8 ANSI Class125 equivalent / Gray cast iron*
K
NEMA 4X and IEC IP54 protected and standard torque type spring return
actuator with terminal block
(Mountable valve sizes: 11/2" to 3")
H
NEMA 4X and IEC IP54 protected and standard torque type spring return
actuator with terminal block
for high differential pressure application
(Mountable valve sizes: 21/2” to 3")
00

41 11/2” / 25 Cv
42 11/2” / 40 Cv
51 2” / 65 Cv
61 21/2” / 95 Cv
81 3” / 125 Cv
S-147 –
* This product was designed and manufactured conforming to the ISO (International Organization for Standardization, PN16 / GG-20).
Specifications
For weight, refer to the table shown in the section Dimensions.
Valve specifications
Item Specification
Model Two-way valve with flanged-end connection, proportional control
Body pressure rating
ANSI Class125 equivalent (Max. working pressure: 230 psig)
End connection ANSI Class125 Bolt pattern flanges, flat face flange (FF)
Size, Cv, Close-off ratings
Note:
Close-off ratings of the actuator in
combination are shown on the right.
Practical close-off rating required for the
valve controlling 374 F (175 C) steam is
116 psig.
Model number
Nominal size
Cv
Close-off ratings
Inch DN Steam Chilled/hot water
High-temp. water
VY5198K0041S-147 1
1
/2” 40 25 145 psig 145 psig
VY5198K0042S-147 1
1
/2” 40 40 145 psig 145 psig
VY5198K0051S-147 2” 50 65 145 psig 145 psig
VY5198K0061S-147 2
1
/2” 65 95 43.5 psig

VY5198K0081S-147 3” 80 125 14.5 psig

VY5198H0061S-147 2
1
/2” 65 95 145 psig 102 psig
VY5198H0081S-147 3” 80 125 102 psig 58 psig
Materials Body Gray cast iron
Plug, stem Stainless steel
Seat ring Heat-resistant PTFE
Gland packing Inorganic fiber
Gasket Non-asbestos joint sheet
Applicable fluid Chilled/hot water, high-temperature water, steam
Allowable fluid temperature 32 F to 347 F (0 C to 175 C), non-freezing
Flow characteristic Equal percentage
Rangeability 100 : 1
Seat leakage 0.01 % of rated Cv value
Paint Gray
Class125
(ASTM A126 class B ASME 16.1-2010)
Max working pressure 230 psig at 32 to 347 F
Use the product within the hatched range.

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Actuator to be combined Integrated with the valve
Actuator specifications
Item Specification
Actuator type Spring return actuator for standard and high differential pressure application
Power supply 24 V AC

15 %, 50 Hz/60 Hz
Power consumption 16 VA
Timing 63 5 sec (50 Hz) / 53

5 sec (60 Hz)
Return time: 3 to 40 seconds (Fully open fully close operation)
Control signal input 4 mA DC to 20 mA DC input (Input impedance: 100

)
Feedback signal output Range: 4 mA DC (0 % position) to 20 mA DC (100 % position)
Max. load resistance: 500 
Materials Case Cast aluminum alloy
Top cover, terminal cover Polycarbonate resin (Color: gray)
Yoke Steel plate
Case of the spring unit Cast aluminum alloy
Cover of the spring unit Cast aluminum alloy
Spring Stainless steel
Surface finishing Case None
Yoke Electro-galvanizing (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: close to 100: open) on front, rear, and bottom sides.
Manual operation Not available.
Wires connection M3.5 screw terminal connection
Enclosure rating NEMA 4X, IEC IP54
Insulation resistance Between terminal and case: 5 M

or higher at 500 V DC
Dielectric strength Between terminal and case: 500 V AC/min with 1 mA or less leakage current
Service life of spring return operation 30,000 operations
Valve and actuator (as a single unit) specifications
Item Specification
Environmental conditions Rated operating condition Limit operating
condition
Transport/storage
conditions (packaged*2)
Ambient
temperature*1
-4 to 122 F (-20 to 50 C)
(Fluid temperature 32 to 302 F (0 to 150 C))
-4 to 140 F
(-20 to 60 C)
-4 to 158 F
(-20 to 70 C)
-4 to 104 F (-20 to 40 C)
(Fluid temperature -302 to 347 F (150 to 175 C))
Ambient humidity 5 % RH to 95 % RH
Vibration 16.1 fps
2
(4.9 m/s
2
), 10 Hz to 150 Hz 32.2 fps
2
(9.8 m/s
2
),
10 Hz to 150 Hz
64.3 fps
2
(19.6 m/s
2
),
10 Hz to 150 Hz
Notes: 1 Do not allow the fluid to freeze.
2 Actuator shall be packed during transport and storage.
Installation locations Indoor (salt air, corrosive gas, and organic solvent must be avoided.)
Outdoor (the optional outdoor cover must be used. Direct sunlight, salt air, corrosive gas,
and organic solvent must be avoided.)
Installation orientation Installable in any position ranging from upright to sideways (90tilted.)
* Always install in upright position outdoors.
Position for shipment 0 % (fully closed) preset at factory.
Options
For options, separate order is required.
Item Specification
Seal connector
(Part No. 83104346-003)
Applicable wire size: 0.28” Dia. to 0.35” Dia. (7 mm Dia. to 9 mm Dia.)
(Seal connector is necessary fo NEMA 4X and IEC IP54 protection.)
Auxiliary switches*1
(Part No. 83165274-001)
Number of auxiliary 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) to 100 % (fully open)
SW B: Adjustable between 0 % (fully closed) to 100 % (fully open)

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CE Marking Conformity
This product complies with the following Electromagnetic Compatibility (EMC).
EMC: EN61000-6-2, EN55011 Class A
Dimensions
Model VY5198K00XXS-147
Model number Valve size Unit H H1 L L1 t C D h N Weight
VY5198K004XS-147 11/2" in 11.54 4.06 6.50 3.25 0.71 3.91 4.92 0.63 4 25.4 lb
DN40 mm 293 103 165 82.5 18 99.2 125 16 11.5 kg
VY5198K0051S-147 2" in 11.69 4.21 7.01 3.50 0.79 4.72 5.91 0.75 4 31.5 lb
DN50 mm 297 107 178 89 20 120 150 19 14.3 kg
VY5198K0061S-147 21/2" in 12.36 4.88 7.48 3.54 0.79 5.51 7.09 0.75 4 41.9 lb
DN65 mm 314 124 190 90 20 140 180 19 19 kg
VY5198K0081S-147 3" in 12.40 4.92 7.99 3.94 0.87 6.00 7.48 0.75 4 48.7 lb
DN80 mm 315 125 203 100 22 152.4 190 19 22.1 kg
Model VY5198H00X1S-147
Model number Valve size Unit H H1 L L1 t C D h N Weight
VY5198H0061S-147 21/2" in 12.36 4.88 7.48 3.54 0.79 5.51 7.09 0.75 4 41.9 lb
DN65 mm 314 124 190 90 20 140 180 19 19 kg
VY5198H0081S-147 3" in 12.40 4.92 7.99 3.94 0.87 6.00 7.48 0.75 4 48.7 lb
DN80 mm 315 125 203 100 22 152.4 190 19 22.1 kg
Figure 1. Dimensions and maintenance clearance (inch/mm): Models VY5198K00XXS-147, VY5198H00X1S-147
Note:
Leave a clearance of 4" (100 mm) if you do not open the top cover
(to set the selector switches after the ACTIVAL is installed).

AB-7352-U
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Parts Identification
Figure 2. Parts identification

AB-7352-U
8
Setting
On the PCB (printed circuit board) of the actuator, the selector switches are provided.
CAUTION
Before wiring, maintenance or setting the selector switches, be sure to turn off the power to the product (including
the optional devices). Failure to do so might cause electric shock or device failure.
Detach the cover only when wiring, setting the product or maintenance and reattach the cover after wiring, setting
the product or maintenance. Failure to do so might cause electric shock.
Set the selector switches using a pen nib or a finger. Do not use a tool such as a screwdriver. Such a tool might
damage the selector switches or the PCB.

During engineering work, do not touch the uninstructed area other than the setting switches. Doing so, you might
be burned. Temperature of some parts of the actuator will become high.
IMPORTANT:
The service life of ACTIVAL operated with small dead band can be shortened since the ACTIVAL operates
more frequently with small dead band than with normal dead band.
To operate the product with small dead band, provide shielded cable for input/output signal lines and power
line. Unshielded cable can cause error due to noise.
Identification of the selector switches
Figure 3. Selector switches
Open/close selector switch for input signal failure:
If no control signal is input, the actuator automatically closes (0 %) or opens (100 %) the valve by setting the selector switch at
‘open’ (100 %) or ‘close’ (0 %).
Direction selector switch for control action of 4 to 20 mA input signal:
Direction of control action by 4 to 20 mA DC input signal can be reversely switched.
Normal action: 4 mA for 0 % to 20 mA for 100 %
Reverse action: 20 mA for 0 % to 4 mA for 100 %
Normal/small selector switch for dead band width:
To more precisely operate the valve, smaller dead band (than the normal) of the control signal input can be set. Two selector
switches are provided for the normal/small dead band width. Always set the both switches at the same mode (‘normal’ or
‘small’).
To swi‚”ch dead band,
change bo‚”h selec‚”or
swi‚”ches‚”o ‚”he same
mode (normal/small)
posi‚”ion.
SignalSignal
Failure
close
open
normal
small
Dead
Band
Mode (input)ode (input)
Directiontion
of Action
20...4mA
4...20mA
4...20mA
20...4mA
Direction
of Action
Mode (input)
Dead
Band
small
normal
open
close
Signal
Failure
Open/close selector switch
for input signal failure
(Initially set at ‘close’.)
Direction selector switch
for control action of 4 to 20 mA input
signal
(Initially set at normal action
(4 mA: 0% to 20 mA: 100%))
Normal/small selector switch
for dead band width
(Initially set at ‘normal’ dead band.)

AB-7352-U
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Installation
Precautions for installation
CAUTION
Installation and wiring must be performed by qualified personnel in accordance with all applicable safety
standards.
For installation, do not mount the valve in an improper position or overtighten the bolts on the flange. Doing so
might damage the product.
After installation, make sure no fluid leaks from the valve-pipe connections. Incorrect installation might cause fluid
leakage.

Install the product so that no foreign objects remains inside the pipes. Be sure to provide a strainer on the inflow
side of the piping. Flush the piping to remove the foreign objects after installation. Foreign objects inside the piping
might damage the product.
Before wiring, maintenance or setting the selector switches, be sure to turn off the power to the product (including
the optional devices). Failure to do so might cause electric.
ACTIVAL Model VY5198K/VY5198H 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).
Install the valve so that the flow direction of process fluid agrees with the arrow indicated on the valve body.
Installation location
CAUTION
Do not install the product nearby a steam coil, pressurized hot-water coil, or any high heat source. High
temperature radiation might cause malfunction of its actuator.
IMPORTANT:
The top and the terminal covers might be corroded by chemicals and organic solvent or their vapor. Do not
expose the ACTIVAL to such substances/vapor.
When the ACTIVAL is used for steam humidifying, install a valve interlocking with air-conditioning unit on the
inflow side in case the ACTIVAL gets damaged.

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. 1 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 might accumulate.
To set the selector switches after installation, leave a enough clearance above the top cover of the actuator, as shown in Fig.
1.
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. 4.) However, the ACTIVAL must be installed always in
upright position outdoors.
Figure 4. Actuator mounting position
Correct mounting Incorrect mounting

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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. Also, install a strainer with 40 or more
meshes (with 80 or more meshes recommended for steam control) on the inflow side.
When installing the ACTIVAL to the pipes, do not allow any object, such as chips, to get inside a pipe or valve. Valve cannot
fully closes, or the valve seat might 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 closes, or the valve seat might 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 (with the ACTIVAL installed) at
the maximum flow rate to remove all the foreign substances. (Factory preset position: 0 %)
For steam control, drain retained water (condensate) in piping. Install a trap on a pipe run which might retain condensate.
Condensate might cause water hummer or damage the valve and piping.
Heat insulation
Do not apply heat insulation to the actuator or to the yoke, as shows in Fig. 2. If the yoke and the actuator are covered with
insulation material, the pointer cannot be checked and might be distorted.
Factory preset position
The actuator shaft is positioned at 0% (in fully open position) for shipment. The shaft is thus completely turned counterclockwise,
and the pointer points at ‘0’. (See Fig. 5.)
Figure 5. Pointer position for shipment
Auxiliary switch (optional)
IMPORTANT:
The auxiliary switch is installed on site. Refer to the instructions supplied with the auxiliary switch for
installation.
Do not open the top cover except when adjusting the auxiliary switch. Close the top cover instantly after
adjusting the auxiliary switch.
Do not put any load on the top cover.
Pointer

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Wiring
CAUTION
Installation and wiring must be performed by qualified personnel in accordance with all applicable safety
standards.
Before wiring, maintenance or setting the selector switches, be sure to turn off the power to the product (including
the optional devices). Failure to do so might cause electric shock or device failure.
Detach the cover only when wiring, setting the product or maintenance and reattach the cover after wiring, setting
the product or maintenance. Failure to do so might cause electric shock.
IMPORTANT:
The ACTIVAL is designed for 24 V AC power supply voltage.Do not apply any other power voltage (e.g., 120 V
AC, 240 V AC) to the ACTIVAL.
Make sure the polarity of the power supply and 4 to 20 mA DC feedback output referring to the wiring diagrams.
Incorrect wiring might result in PCB (print circuit board) burnout.
To prevent damage, cover the terminals except when connecting/disconnecting wires.
Do not leave any refuse including metal chips after cutting a knockout hole and after connecting the wires
inside the actuator.
Do not connect 24 V AC power to the terminals 4 to 7.
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 6. 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. 7.
Figure 7. Terminal cover removal
3) Correctly connect the wires to the terminals with M3.5 screw terminal lugs, referring to Figs 8 to 10.
4) When the ACTIVAL is used in a high-humidity environment or outdoors, use a water-proof connector for the wiring port.
5) Attach the terminal cover by the 3 original screws.
Knockout hole
for wiring port
1. Unscrew the setscrews.
2. Remove terminal cover.
Terminal cover
Setscrews

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To keep NEMA 4X and 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.
Terminals connection
Figure 8. Terminals connection of Model VY519XK/VY519XH
1234567
T1T2Vacant + - + -
24 V AC
power supply
4 to 20 mA DC
inputs from
controller
4 to 20 mA DC
feedback output

Note:
Terminals 2, 5, and 7 are
connected inside the actuator.

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Connection Examples (Connection to Azbil Corporation’s SDC series controller)
Connection to Model SDC35TC0/SDC36TC0 Connection to Model SDC35TC0/SDC36TC0 (Parallel operation)
Notes:
Input impedance of the actuator is 100 .
For connecting multiple ACTIVAL to one controller (e.g., Model SDC35/SDC36), provide a transformer (two in total) for each ACTIVAL
since 4 to 20 mA input is not isolated from other terminals.
Terminals 2, 5, and 7 are connected inside the actuator. To connect to a device (PLC, position indicator, etc.) with its terminals not isolated
inside, externally isolate (between the ACTIVAL and the device). Otherwise, a loop is formed for the common line and can damage the
circuit of the ACTIVAL. (R series controllers including Model SDC35/SDC36 shown in Figs. 9 and 10 are isolated inside.)
Isolation transformer is required for ACTIVAL. Transformer without isolation might damage the ACTIVAL and other devices connected to
ACTIVAL.
Model SDC35/SDC36TC0
Model VY5198K/VY5198H
(4 to 20 mA DC input with
4 to 20 mA DC output)
+ 13
- 14
1 T1
2 T2
4 +
5 -
6 +
7 -
Figure 9. Connection example:
Single Model VY5198K/VY5198H
with Model SDC35/SDC36TC0
Power
supply
Isolation
transformer
Position indicator Isolator
+
-
+ +
- -
Isolation example:
If the position indicator is not isolated inside, provide
an isolator. If isolated, an isolator is not required.
Model SDC35/SDC36TC0
+13
-14
1 T1
2 T2
4 +
5 -
6 +
7 -
Figure 10. Connection example: Two Model VY5198K/VY5198H
with Model SDC35/SDC36TC0 (Parallel operation)
2 Model VY5198K/VY5198H
(4 to 20 mA DC input with
4 to 20 mA DC output)
1 T1
2 T2
4 +
5 -
6 +
7 -
Power
supply
Isolation
transforme
r
Power
supply
Isolation
transformer
Position indicator Isolator
+
-
+ +
- -
Position indicator Isolator
+
-
+ +
- -
Isolation example:
If the position indicator is not isolated inside, provide
an isolator. If isolated, an isolator is not required.

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Internal Connection of Auxiliary Switch
Auxiliary switch Part No. 83165274-001
Switches A and B actuating position: Adjustable between 0 % (fully closed) and 100 % (fully open)
Figure 11. Internal connection of Part No. 83165274-001
OP1
OP2
OP3
N.C.
N.O.
Common
OP4
OP5
OP6
N.C.
N.O.
Common
Switch A Switch B

AB-7352-U
15
Inspection and Troubleshooting
CAUTION
Do not carelessly touch this product when being used to control hot water or steam. The product temperature is
hot, and you might get burned.
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 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.
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.
Operating time of the spring return is too
short.
Wiring condition of the brake motor Consult with our sales/service personnel.
Operating time of the spring return is too
long.
The spring return does not operate.
Torque of valve operation Consult with our sales/service personnel.
The actuator does not fully closes the valve
(in 0 % position).

Consult with our sales/service personnel.
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. Input signal therefore disagrees with
the feedback signal, and this is not an error.

AB-7352-U
Rev. 4.0 Jun. 2016 AB-7352-U
16
ACTIVAL is a trademark of Azbil Corporation in Japan or in other countries.