| Вид документа | Бюлетень виробу |
|---|---|
| Виробник | JCI |
| Код документа | va7800-series-electric-valve-actuators-product-bulletin |
| Група обладнання | VA7810-HGA-2 Electric Valve Actuator |
| Сторінок | 9 |
| Мова документа | англійська |
| Розмір файлу | 0.8 МБ |
Текст документа
VA7800 Series Electric Valve Actuators
Product Bulletin
VA7800 Series Code No. LIT-12011474
Issued May 2021
The VA7800 Series of Electric Valve Actuators control
VG7000 Series Bronze Globe Valves in Heating,
Ventilating, and Air Conditioning (HVAC) systems. The
VA7800 Series produces a minimum linear output force
of 180 lb (800 N) and is ordered field mounted or
factory coupled to 1 in. and 2 in. VG7000 Series
Bronze Globe Valves with brass trim and to 1/2 in.
through 2in. VG7000 Series Bronze Globe Valves with
stainless steel trim. All actuators are direct mount and
available in both Spring Return and Non-Spring Return
models.
Spring Return models ship from the factory set for
DC 0 to 10 V Proportional Control. With a change of
DIP switch settings, this model can be field configured
to On/Off or Floating Control. In addition to these
settings, optional auxiliary switches are also available.
Non-Spring Return models are available in AC 24 V
On/Off (Floating) Control, or DC 0 to 10 V Proportional Figure 1: VA7800 Actuator
Control. Models are available with or without optional
auxiliary switches.
Table 1: Features and benefits
Features Benefits
Automatic Stroke Adjustment Provides easy, quick, and precise commissioning.
Manual Override as Standard Allows manual positioning of valve for easy commissioning and servicing.
NEMA 2 (IP54) Enclosure Protection Allows installation in a wide range of environments.
Unique Swing-Gate Yoke Offers fast and secure attachment to the valve.
Brushless Motor Ensures low energy consumption and long life.
Proportional Model Enables one model to be used for various control types.
Force-Controlled Motor Shut-Off Reduces energy consumption, wear of the actuator, and protects the valve from
excessive forces.
Stroke Position Indicator Gives visual indication of valve operation, provides automatic adjustment of
stroke indicators during first cycle of operation.
Status Light-Emitting Diode (LED) Gives visual indication of actuator status and assists with diagnostic.
Optional Integrated Auxiliary Switches Provides adjustable switch points with line voltage capability.
Integral Cable with Colored Conductors Simplifies installation and field wiring.
Integral Connector for 3/8 in. (10 mm) Simplifies installation and field wiring.
Flexible Metal Conduit (FMC)
Underwriters Laboratories Inc.® (UL) Provides internationally recognized regulatory agency approval.
and CE Compliant
VA7800 Series Electric Valve Actuators Product Bulletin
1
Application overview These actuators are configured for response to 0 to
10 VDC, 2 to 10 VDC, 0 to 20 mA, or 4 to 20 mA. Both
IMPORTANT: The VA7800 Series Electric Valve models of actuators can also be custom configured for
Actuators are intended to control saturated steam, valve sequencing. Minimum setpoint is 0 to 6 VDC (0 to
hot water, and chilled water flow under normal 12 mA) and maximum input signal is 3 to 10 VDC (6 to
equipment operating conditions. Where failure or 20 mA). A 0 to 10, or 2 to 10 VDC feedback signal is
malfunction of the VA7800 Series Valve Actuator available for position indication. The actuators feature a
could lead to personal injury or property damage to preset actuator position with a stem that extends or
the controlled equipment or other property, retracts, on loss of signal. When current input is
additional precautions must be designed into the selected, this stem feature is not available.
control system. Incorporate and maintain other
devices, such as supervisory or alarm systems or Operation
safety or limit controls, intended to warn of or protect The VA7800 Series of actuators offers up to 1 in.
against failure or malfunction of the VA7800 Series (25 mm) of linear stroke for the operation of
Valve Actuator. Johnson Controls® VG7000 Series Bronze Control
Valves. The actuators interface to all threaded stem
VG7000 Valves and can be used on all stainless steel
VA7810-HGx-2 Series Non-Spring Return trim VG7000 series valves from 1/2 in. to 2 in. The
actuator should not be used on brass trim VG7000
Proportional Actuator
series valves from 1/2 in. to 3/4 in. All actuators can
The VA7810-HGx-2 Series Non-Spring Return
be manually positioned by means of a 5 mm Allen
Actuators offer fail-in-place proportional control of
wrench.
valves in HVAC systems regulated by an electronic
controller. These actuators are configured for response For non-spring return actuators, engage manual
to 0 to 10 VDC, 2 to 10 VDC, 0 to 20 mA, or 4 to 20 mA. operation by inserting the Allen wrench into the
The VA7810-HGx-2 Series can also be custom hexagonal socket and pushing down to cut off the
configured for valve sequencing. The minimum power to the motor. Turn the Allen wrench clockwise to
setpoint is 0 to 6 VDC (0 to 12 mA), and maximum extend the actuator stem; turn the wrench
input signal is 3 to 10 VDC (6 to 20 mA). A 0 to 10 counterclockwise to retract the actuator stem.
VDC, or 2 to 10 VDC feedback signal is available for
For spring return actuators, manual operation requires
position indication. The actuator features a preset
that the power be disconnected. On loss of power, the
actuator position with a stem that extends or retracts on
actuator spring force moves the stem to its fail-safe
loss of signal. However, when you select current input,
position. For manual operation, insert the Allen wrench
this stem feature is not available.
into the hexagonal socket and turn the wrench either
VA7820-HGx-2/VA7830-HGx-2 Series Spring clockwise or counterclockwise depending on the
Return Proportional Actuator actuator model. When you reach the desired stem
position, push the wrench down and slightly rotate the
The VA7820-HGx-2 and VA7830-HGx-2 Series
wrench in the opposite direction to lock it in position.
Actuators are Spring Return actuators that provide
When power resumes, the actuator is released from its
fail-safe proportional control of valves in HVAC
manual position.
systems regulated by an electronic controller. In the
event of power loss, the VA7820-HGx-2 Series Note: After using manual control to position the
Actuators spring return with the actuator stem fully actuator, it is recommended that a self-calibration cycle
retracted and the valve stem in the full up position. On be performed to assure proper operation.
loss of power, the VA7830-HGx-2 Series Actuators
spring return with the actuator stem fully extended and
the valve stem in the full down position.
VA7800 Series Electric Valve Actuators Product Bulletin
2
VA78x0-HGx-2 Series Proportional Control The VA78x0-HGx Series Actuators are a direct acting
Actuators and factory supplied set for 0 to 10 VDC Proportional
The VA78x0-HGx Series Actuators operate with Control. Field setting options exist for standard ranges
Proportional Control, On/Off Control, or Floating of 0 to 20 VDC (0 to 20 mA) or 2 to 10 VDC (4 to
Control. Changes in DIP switch settings allow the 20 mA) control in the field. At the end of a span, the
selection of Control Type, Input Signal, Input Range, actuator control signal has a buffer zone of 0.3 V
Action, actuator position at signal loss, and stroke (0.6 mA) to ensure definite valve close-off.
speed. See Table 2 for a detailed reference of DIP You can set the actuators for custom signal ranges.
switch settings. Minimum setpoint is 0 to 6 VDC (0 to 12 mA) and
Table 2: VA78x0-HGx-2 Series Proportional maximum input signal is 3 to 10 VDC (6 to 20 mA).
Control Actuators DIP Switch Settings Position feedback signal is also available in Table 3.
DIP Switch Description State Table 3: Position Feedback Signal for
Number VA78x0-HGx-2 Series Proportional
1 Control Type ON Floating/on/off control Control Actuators
OFF Proportional control Input Signal Feedback Output
2 Input Signal ON Current input signal 0 to 10 VDC 0 to 10 VDC
OFF Voltage input signal 2 to 10 VDC 2 to 10 VDC
3 Input Signal ON Custom setting 0 to 20 mA 0 to 10 VDC
Range 4 to 20 mA 2 to 10 VDC
OFF Pre-defined setting
4 ON 2 to 10 V (4 to 20 mA) Custom Range 0 to 10 VDC
OFF 0 to 10 V (0 to 20 mA)
All VA78x0-HGx-2 Series Actuators feature a
5 Action ON Reverse
multicolored LED that provides operational status and
OFF Direct failure analysis information. See Table 4 for a detailed
6 Preset ON Actuator Stem description of LED color indicators.
Actuator Extends
Position at
OFF Actuator Stem
Signal Loss1
Retracts
7 Stroke ON 76 s/in. (3 s/mm)
Speed
OFF 152 s/in. (6 s/mm)
8 Not Used Not Used
1. Control signal loss position preset does not operate when
you select 0 to 20 mA or custom input range control.
Table 4: VA78x0-HGx-2 Series Actuators LED Status and Color Indicators
LED Color
Status Green Yellow Red
Off Power off
Blink Motor running Power on after a black-out1 High temperature3
Temporary fault, possible valve
sticking2
Fast Blink Calibrating Input signal failure
Continuous Power on, motor not running Custom calibration value out of Generic fault
On range
1. After reaching both ends of the stroke, the input signal is recalibrated and the LED switches to green.
2. The actuator leaves this mode only if the push button is pressed for at least 5 seconds, and the previously detected error
has been resolved.
3. This status is temporary. When the detected temperature decreases to the acceptable range, the LED switches back to
green.
VA7800 Series Electric Valve Actuators Product Bulletin
3
The actuator microprocessor carries out a failure The LED also flashes yellow when power resumes
diagnosis when a failure has been detected. The after a power loss. The LED continues to flash yellow
colored LED indicates the actuator status. When the until the end stop is achieved or a recalibration process
microprocessor detects that the stem has come to an is manually started.
unexpected stop, it initiates a retry cycle. The retry
cycle repeats three times, and if unsuccessful, the Wiring diagrams
actuator switches to fault mode and the LED flashes Figure 2 show detailed diagrams for the wiring
yellow. If the problem is cleared, the actuator continues configurations of the VA7800 Series Electric Valve
to function normally. Actuators.
Figure 2: VA78x0-HGx-2 Wiring Diagram
Mounting • Install the valve with the stem horizontal and
insulate the pipe to minimize heat transfer to the
When mounting the actuator on a valve, the following
actuator for fluid temperatures above 212°F
precautions are recommended:
(100°C).
• Never cover the actuator with insulating material.
• Allow sufficient clearance to remove the actuator.
• Mount the valve in an upright angle or at an angle
less than 90° from the vertical for fluid
temperatures up to 212°F (100°C).
• Orient the actuator so that the yoke supports are
one above the other when mounting the valve
horizontally.
FIG:MT_7800
Figure 3: VG7800 Mounting
VA7800 Series Electric Valve Actuators Product Bulletin
4
Ordering information
Contact the nearest Johnson Controls representative
and specify the desired product code number from
Table 5.
Table 5: VA-78x0-xxx-2 Series Electric Valve Actuators
Code Number Input Signal Power Action on Power Feedback Auxiliary Nominal Stroke Time1
Requirements Failure Switches (Seconds)
Spring Return Actuator
Proportional 0 (2) to 10 VDC Spring Return Actuator
2 SPDT, 1A, 3A Resistive,
24 VAC 50/60 Hz ± 15% 230 VAC 50/60 Hz ± 15%
1/2 and 3/4 in. VG7000 1 and 1-1/4 in. VG7000 1-1/2 and 2 in. VG7000
Floating Point 0 (4) to 20 mA Non-Spring Return Retracted Valve Stem Full Up Extended Valve Stem Full Down 0 (2) to 10 VDC
On/Off VA Rating 1/4 HP (5/16 in. valve stroke) (1/2 in. valve stroke) (3/4 in. valve stroke)
VA7810-HGA-2 X X X X --- 6 X --- --- X --- 24/48 38/76 57/114
VA7810-HGC-2 X X X X --- 6 X --- --- X X 24/48 38/76 57/114
VA7820-HGA-2 X X X X --- 11 --- X --- X --- 24/48 38/76 57/114
VA7820-HGC-2 X X X X --- 11 --- X --- X X 24/48 38/76 57/114
VA7830-HGA-2 X X X X --- 11 --- --- X X --- 24/48 38/76 57/114
VA7830-HGC-2 X X X X --- 11 --- --- X X X 24/48 38/76 57/114
1. VA78x0-HGx-2 actuators have field selectable stroke speed; factory setting is the slowest speed.
Repair information
If a VA78x0-xxx-2 Series Electric Valve Actuator fails to
operate within specifications, replace the unit. For a
replacement actuator, contact the nearest
Johnson Controls representative.
Table 6: Accessories ordering information
Product Code Number Description
V-9999-BC1 Mounting Kit to Mount VA-715x, VA-720x, VA78xx, or VA-4233 Series Electric Actuators
to Barber Coleman® 1/2 through 1-1/4 Inch VB-9xxx Valve Bodies
V-9999-HW1 Mounting Kit to Mount VA-715x, VA-720x, VA78xx, or VA-4233 Series Electric Actuators
to Honeywell® V5011A, F, and G, 1/2 through 3 Inch Single-Seated and V5013F
Three-Way Valves
VA7800 Series Electric Valve Actuators Product Bulletin
5
Dimensions
4.56 (116)
5.9 (150) Minimum
9.6 (244) 8.35 (212)
Figure 4: Dimensions, in. (mm)
VA7800 Series Electric Valve Actuators Product Bulletin
6
Technical specifications
Table 7: VA7810-HGx-2 Series Proportional Electric Non-Spring Return Valve Actuators
Model VA7810-HGx-2
Thrust Force 180 lb (800 N) minimum
Power Supply AC 24 V (AC 19 to 30 V) at 50/60 Hz, Class 2
Transformer Sizing 6 VA
Input Signal Switch Selectable:
Proportional: DC 0 to 10 V, DC 2 to 10 V, 0 to 20 mA or 4 to 20 mA
Programmable Proportional:
Start Point: 0 to 6 VDC (0 to 12 mA)
End Point: 3 to 10 VDC (6 to 20 mA) with 3 VDC (6 mA) minimum span
On/Off (Floating): AC 24 V at 50/60 Hz
Switch Selectable Direct or Reverse Action with signal increase
Switch Selectable preset actuator position on loss of signal
Control Input Impedance Voltage Input: 100k ohm
Current Input: 120 ohm
Feedback DC 0 (2) to 10 V corresponds to input range
Auxiliary Switch Rating SPDT, AC 230 V, 3.0 A Resistive, 1/4 hp
Stroke 5/16 to 1 in. (8 to 25 mm)
Stroke Speed (Switch Selectable) Slow (Factory Setting) 5/16 in. stroke: 48 seconds
1/2 in. stroke: 76 seconds
3/4 in. stroke: 114 seconds
Fast 5/16 in. stroke: 24 seconds
1/2 in. stroke: 38 seconds
3/4 in. stroke: 57 seconds
Ambient Operating Conditions 23 to 131°F (-5 to 55°C); 10 to 90% RH Noncondensing
Ambient Storage Conditions -40 to 176°F (-40 to 80°C); 5 to 95% RH Noncondensing
Enclosure Rating NEMA 2 (IP54)
Electrical Connection 48 in. (1.2 m) UL 758 Type AWM Halogen Free Cable with 18 AWG
(0.85 mm2) Conductors and 0.25 in (6 mm) Ferrule Ends
Dimensions 9.6 x 4.56 x 8.35 in. (244 x 116 x 212 mm)
Materials Gearbox and Yoke Die Cast Aluminum
Cover Resin ABS/PC - UL94-V0
Stem Stainless Steel
Coupler Brass
Life Cycles 100,000 full stroke cycles
Shipping Weight 5.4 lb (2.5 kg)
Compliance United States UL 60730 Listed Type 1 Enclosure, CCN XAPX, File E194024
Canada UL 60730-1 Listed Type 1 Enclosure, CCN XAPX7, File E194024
Europe CE Mark - Johnson Controls, Inc. declares that this product is in compliance
with the essential requirements and other relevant provisions of the
EMC directive and the Low Voltage Directive.
VA7800 Series Electric Valve Actuators Product Bulletin
7
Table 8: VA7820-HGx-2 / VA7830-HGx-2 Series Proportional Electric Spring Return Valve Actuators
Model VA7820-HGx-2 / VA7830-HGx-2
Thrust Force 180 lb (800 N) minimum
Power Supply AC 24 V (AC 19 to 30 V) at 50/60 Hz, Class 2
Transformer Sizing 11 VA
Input Signal Switch Selectable:
Proportional: DC 0 to 10 V, DC 2 to 10 V, 0 to 20 mA or 4 to 20 mA
Programmable Proportional:
Start Point: 0 to 6 VDC (0 to 12 mA)
End Point: 3 to 10 VDC (6 to 20 mA) with a 3 VDC (6 mA) minimum span
On/Off (Floating): AC 24 V at 50/60 Hz
Switch Selectable Direct or Reverse Action with signal increase
Switch Selectable reset actuator position on loss of signal
Control Input Impedance Voltage Input: 100k ohm
Current Input: 120 ohm
Feedback DC 0 (2) to 10 V corresponds to input range
Auxiliary Switch Rating SPDT, AC 230 V, 3.0 A Resistive, 1/4 hp
Stroke 5/16 to 1 in. (8 to 25 mm)
Stroke Speed Slow (Factory Setting) 5/16 in. stroke: 48 seconds
1/2 in. stroke: 76 seconds
3/4 in. stroke: 114 seconds
Fast 5/16 in. stroke: 24 seconds
1/2 in. stroke: 38 seconds
3/4 in. stroke: 57 seconds
Ambient Operating Conditions 23 to 131°F (-5 to 55°C); 10 to 90% RH Noncondensing
Ambient Storage Conditions -40 to 176°F (-40 to 80°C); 5 to 95% RH Noncondensing
Enclosure Rating NEMA 2 (IP54)
Electrical Connection 48 in. (1.2 m) UL 758 Type AWM Halogen Free Cable with 18 AWG
(0.85 mm2) Conductors and 0.25 in. (6 mm) Ferrule Ends
Dimensions 9.6 x 4.56 x 8.35 in. (244 x 116 x 212 mm)
Materials Gearbox and Yoke Die Cast Aluminum
Cover Resin ABS/PC - UL94-V0
Stem Stainless Steel
Coupler Brass
Life Cycles 100,000 full stroke cycles
Shipping Weight 7.3 lb (3.3 kg)
Compliance United States UL 60730 Listed Type 1 Enclosure, CCN XAPX, File E194024
Canada UL 60730-1 Listed Type 1 Enclosure, CCN XAPX7, File E194024
Europe CE Mark - Johnson Controls, Inc. declares that this product is in compliance
with the essential requirements and other relevant provisions of the
EMC directive and the Low Voltage Directive.
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from
misapplication or misuse of its products.
VA7800 Series Electric Valve Actuators Product Bulletin
8
European single point of contact: NA/SA single point of contact: APAC single point of contact:
JOHNSON CONTROLS JOHNSON CONTROLS JOHNSON CONTROLS
WESTENDHOF 3 507 E MICHIGAN ST C/O CONTROLS PRODUCT
45143 ESSEN MILWAUKEE WI 53202 MANAGEMENT
GERMANY USA NO. 22 BLOCK D NEW DISTRICT
WUXI JIANGSU PROVINCE 214142
CHINA
Building Efficiency
507 E. Michigan Street, Milwaukee, WI 53202
Metasys® and Johnson Controls® are registered trademarks of Johnson Controls.
All other marks herein are the marks of their respective owners. © 2021 Johnson Controls.
VA7800 Series Electric Valve Actuators Product Bulletin
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