| Вид документа | Інструкція з монтажу |
|---|---|
| Виробник | JCI |
| Код документа | va-7700-series-electric-non-spring-return-actuators-installation-guide |
| Група обладнання | VA-7700-AGA-2 Electric Non-Spring Return Actuator |
| Сторінок | 10 |
| Мова документа | англійська |
| Розмір файлу | 1.1 МБ |
Текст документа
*1488328187C*
14-88328-187, Rev. C
VA-7700 Series Electric Non-Spring Return Actuators
Installation Guide
VA-7700-AGA-2, VA-7700-GGA-2 Part No. 14-88328-187, Rev. C
Issued 2025-03-26
Installation
IMPORTANT: Use this VA-7700 Series electric non-spring return actuator only to control equipment under
normal operating conditions. Where failure or malfunction of the actuator could lead to personal injury or
property damage to the controlled equipment or other property, additional precautions must be designed into the
control system. Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit
controls, intended to warn of or protect against failure or malfunction of the actuator.
IMPORTANT : Utiliser ce VA-7700 Series electric non-spring return actuator uniquement pour commander des
équipements dans des conditions normales de fonctionnement. Lorsqu'une défaillance ou un
dysfonctionnement du cooling actuator risque de provoquer des blessures ou d'endommager l'équipement
contrôlé ou un autre équipement, la conception du système de contrôle doit intégrer des dispositifs de protection
supplémentaires. Veiller dans ce cas à intégrer de façon permanente d'autres dispositifs, tels que des systèmes
de supervision ou d'alarme, ou des dispositifs de sécurité ou de limitation, ayant une fonction d'avertissement ou
de protection en cas de défaillance ou de dysfonctionnement du cooling actuator.
Parts included
• One jam nut (top left drawing in Figure 1)
• Two-position scale (in.) (top right drawing in Figure 1)
• Two-position scale (mm) (bottom left drawing in Figure 1)
• Position indicator (bottom right drawing in Figure 1)
Figure 1: Parts included
Special tools needed
• Wrenches, 3/4 in. (19 mm) and 9/16 in. (14 mm), open-end or adjustable
• Wrench, 5/16 in. (8 mm)
• Screwdrivers, Phillips cross-head with PH2 bit and blade, 3/32 in. (2 mm)
• Optional digital voltmeter
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
1
Installation on a Johnson Controls® VG7000 Series valve
Figure 2: VA-7700 Series actuator installation
3
Max.
1
Max.
Max.
4
2
5
6
FIG: va770x_install
2 N·m
Stop
5/16 in.
(8 mm) Max. 2 N·m
1. Thread the jam nut onto the valve stem down to the end of the thread. Place the position indicator on top of the
jam nut.
2. Push the valve stem in so it is in the full-down position. Position the actuator on the valve bonnet.
3. Lift the stem to meet the coupler, and screw the coupler onto the stem until the valve reaches the end of stroke
in the full-up position.
Note: The coupler should be turned a minimum of four revolutions.
4. While holding the coupler in place, hand-tighten the jam nut against the coupler.
5. Use a 5/16 in. (8 mm) wrench to tighten the set screw.
6. Use the 3/4 in. (19 mm) and 9/16 in. (14 mm) open-end or adjustable wrenches to tighten the coupler and jam
nut an additional 1/8 to 1/4 turn.
Dimensions
Figure 3: VA-7700 Series actuator dimensions, in. (mm)
4 1/16 (104)
2 3/4 (70) 6 5/16 (160)
5 15/16 (150)
3 9/16 (90)
1/2 (13 mm)
FIG:top_view
NPSM Internal
Thread Connection
FIG:side_view
FIG:front_view
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
2
Mounting
IMPORTANT: Do not install or use this VA-7700 Series electric non-spring return actuator in or near
environments where corrosive substances or vapors could be present. Exposure of the actuator to corrosive
environments may damage the device’s internal components and will void the warranty.
IMPORTANT: The actuator is intended for indoor mounting only, with no direct exposure to water beyond
NEMA 2 conditions. Use an appropriate shield or enclosure where the environment exceeds NEMA 2
specifications.
Figure 4: Mounting positions
90
Maximum
OK OK
FIG: mounting_positions
NO
Note: For steam applications, the actuator should not be mounted above the pipe.
Wiring
WARNING: Risk of electric shock.
! Disconnect or isolate all power supplies before making electrical connections. More than one
disconnection or isolation may be required to completely de-energize equipment. Contact with
components carrying hazardous voltage can cause electric shock and may result in severe personal
injury or death.
AVERTISSEMENT : Risque de décharge électrique.
Débrancher ou isoler toute alimentation avant de réaliser un branchement électrique. Plusieurs
isolations et débranchements sont peut-être nécessaires pour couper entièrement l'alimentation de
l'équipement. Tout contact avec des composants conducteurs de tensions dangereuses risque
d'entraîner une décharge électrique et de provoquer des blessures graves, voire mortelles.
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
3
Figure 5: Wiring diagram for VA-7700-GGA-2 Figure 5: Wiring diagram for VA-7700-AGA-2
proportional model, 24 VAC applications floating model, 24 VAC applications
2 RED 3 GREY 1 BLACK 4 ORANGE 2 RED 3 ORANGE 1 BLACK
(+) 0-10 VDC (+) 0-10 VDC
COM COM
FIG:proportional_model_wiring
FIG:? oating_model_wiring
24 VAC
24 VAC 24 VAC
(-) (-)
Setup and adjustments
Auto-calibration with standard input signal ranges (VA-7700-GGA-2 only)
Select the standard control signals by setting DIP switches 3 and 4. See Figure 6 for the location of the DIP
switches and Figure 7, Figure 8, Table 1, and Table 2 for DIP switch information. We recommend that you set the
actuator to the desired control signal and action before you fit the actuator to the valve. The power must be
connected before the auto-calibration cycle can start.
Figure 6: DIP switch location
Figure 7: DIP switch settings
Left
Right
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
4
Table 1: DIP switch description
DIP Function DIP switch settings
switch
position
1 Control signal
1 VDC mA
type
2, 3, 4 Control signal ranges
2 2
3
0 VDC to 10 VDC 3 0 mA to 20 mA
4 4
2 2
3
0 VDC to 5 VDC 3 4 mA to 20 mA
4 4
N/A
2
3 5 VDC to 10 VDC
4
N/A
2
3 Free range
4
5 Not used N/A N/A
6 Action
6 DA 6 RA
7 Electrical manual override
7 OFF ON
7
8 Control signal failure position
preset1
8
Up 8 Down
1. This preset does not operate with mA control.
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
5
Figure 8: DIP switch examples
Stroke
1
5
3
50%
2
4
100% Input
0 5V 10 V
4 mA
20 mA
Table 2: DIP switch setting examples
Example 1 2 3 4 5
Input 0 VDC to 10 VDC 4 mA to 20 mA 0 VDC to 5 VDC 5 VDC to 10 VDC Free range
Action DA RA DA RA DA
DIP switch settings 1 1 1 1 1
2 2 2 2 2
3 3 3 3 3
4 4 4 4 4
5 5 5 5 5
6 6 6 6 6
To auto-calibrate the actuator mounted to a valve:
1. Verify that a minimum distance of 1/32 in. (1 mm) exists between the top of the actuator stem nut and the stem
guide bush in the actuator motor housing base plate with the stem fully retracted (Figure 9). If necessary,
correct the distance by adjusting the actuator or the valve stem connection.
Figure 9: Actuator minimum distance
Greater than 1/32 in.
(1 mm)
2. To begin the auto-calibration cycle, push both calibration buttons on the printed circuit board for at least 5
seconds. The actuator travels a full cycle to detect the stem extended and retracted limits (Figure 10).
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
6
Note: During the auto-calibration cycle, all five status indication LEDs flash simultaneously.
Figure 10: Auto-calibration
Calibration buttons
Greater than 5 seconds
3. When the auto-calibration cycle is complete, the LEDs stop flashing, the actuator stem moves to the position
that corresponds to the control signal, and the five LEDs indicate the stem position. See Figure 11 for an
example LED display.
When the control signal changes, the actuator stem moves to the new position and one LED flashes. The LED
stops flashing when the actuator stem reaches the position that corresponds to the control signal.
Auto-calibration for freely defined control signal ranges
Set a non-standard control signal range (such as 2 VDC to 8 VDC) by setting DIP switches 3 and 4 (Figure 8 and
Table 2). Set the actuator to the desired control signal type and action before you fit it to the valve. Connect the
power before you start the auto-calibration cycle.
To auto-calibrate the actuator mounted to a valve:
1. Verify that a minimum distance of 1/32 in. (1 mm) exists between the top of the actuator stem nut and the stem
guide bush in the actuator motor housing base plate with the stem fully retracted (Figure 9). If necessary,
correct the distance by adjusting the actuator or the valve stem connection.
2. To begin the auto-calibration cycle, push both calibration buttons on the printed circuit board for at least 5
seconds. The actuator travels a full cycle to detect the stem extended and retracted limits.
3. During the auto-calibration cycle, apply one of the control signal values (Table 1) and confirm the setting by
pressing one of the two calibration buttons for 2 seconds. All five LEDs illuminate for
5 seconds to confirm the setting.
4. During the auto-calibration cycle, apply the second control signal value and confirm the setting by pressing one
of the two calibration buttons for 2 seconds. All five LEDs illuminate for 5 seconds to confirm the setting.
Note: Both the minimum and the maximum control signal values are stored in the memory of the actuator.
5. When the auto-calibration cycle is complete, the LEDs stop flashing, the actuator stem moves to the position
that corresponds to the control signal, and the five LEDs indicate the stem position. See Figure 11 for an
example LED display.
6. When the control signal changes, the actuator stem moves to the new position and one LED flashes. The LED
stops flashing when the actuator stem reaches the position that corresponds to the control signal.
Operation
Normal operating mode
The LED display indicates the actuator stem position. The LED stops flashing when the actuator stem reaches the
position that corresponds to the control signal. See Table 3 for the LED definitions.
Table 3: LED definitions
LED Definition
LED is permanently on
LED is flashing
LED is permanently off
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
7
Figure 11 illustrates the LEDs when the actuator stem is moving between 40% and 60% of the stroke (left) and the
LEDs when the actuator stem is stopped between 40% and 60% of the stroke (right).
Figure 11: Actuator stem between
40% to 60% of stroke
0%
0 to 20%
20 to 40%
40 to 60%
60 to 80%
80 to 100%
100%
Actuator status indication
The actuator microprocessor displays a failure diagnosis when a failure is detected. The LED display indicates the
actuator status.
When the microprocessor detects that the stem has come to an unexpected stop, it initiates a retry cycle. The cycle
repeats three times. If it is unsuccessful, the actuator status switches to fault mode and the LEDs indicate an alarm
code. If the problem is cleared, the actuator continues normal operation.
Fault mode
If the actuator enters fault mode, the LEDs flash as indicated in Figure 12. The actuator can enter fault mode under
the following circumstances:
• the stem comes to an unexpected stop, and the retry cycle fails to correct the issue
• the freely defined control signal settings are incomplete or not stored
• the factory-set parameters are invalid
Figure 12: LEDs in fault mode
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
8
To indicate the specific fault, press one of the calibration buttons for 5 seconds. One of four LED fault alarm codes
displays. See Figure 13 for the four LED fault alarm codes and Table 4 for the diagnoses.
Figure 13: Four LED fault alarm codes
A B C D
Table 4: LED fault alarm code diagnoses
LED fault Diagnosis
alarm code
A The calibration is interrupted before completion or values are missing
B Calibration parameters read into memory are invalid
C The actuator is stalled due to valve blockage
D Incorrect calibration parameters writing into memory
When the problem is corrected, press one of the calibration buttons for at least five seconds to exit the fault mode
and display the current actuator status.
Repair information
If the VA-7700 Series electric non-spring return actuator fails to operate within its specifications, replace the unit.
For a replacement actuator, contact the nearest Johnson Controls representative.
Technical specifications
VA-7700 Series electric non-spring return actuators (Part 1 of 2 )
Product VA-7700-AGA-2 (floating model) VA-7700-GGA-2 (proportional model)
Power requirement 24 VAC (20.4 VAC to 27.6 VAC) at 50/60 Hz: 24 VAC (20.4 VAC to 27.6 VAC) at 50/60 Hz:
Class 2 (North America) or SELV (Europe), 3.2 Class 2 (North America) or SELV (Europe), 4.3
VA running VA running
Input signal/ — 0 VDC to 10 VDC
adjustments 0(4) mA to 20 mA
Adjustable zero and span
Control input — 0 VDC to 10 VDC: 100k Ω
impedance
Feedback signal — 0 VDC to 10 VDC
Motor Impedance protected motor
Force minimum 90 lb (400 N)
Stroke range 13/16 in. (20 mm) maximum
Movement type Linear
Stroke time normal 5/16 in. (8 mm) at 50 Hz: 84 seconds, at 60 Hz: 70 seconds
1/2 in. (13 mm) at 50 Hz: 137 seconds, at 60 Hz: 114 seconds
3/4 in. (19 mm) at 50 Hz: 200 seconds, at 60 Hz: 167 seconds
Cycles 250,000 full-stroke cycles
VA-7700 Series Electric Non-Spring Return Actuators Installation Guide
9
VA-7700 Series electric non-spring return actuators (Part 2 of 2 )
Audible noise rating Less than 30 dBA at 39 13/32 in. (1 m)
Electrical 120 in. (3.05 m) UL 444 Type CMP plenum-rated cable with 19 AWG (0.75 mm²) conductors and
connections 1/4 in. (6 mm) ferrule ends
Conduit connections 1/2 in. (13 mm) NPSM threaded conduit connectors
Valve compatibility Johnson Controls VG7000 Series Bronze Control Valves
Enclosure IP 54/NEMA 2
Operating ambient 23°F to 131°F (-5°C to 55°C); 90% RH maximum, noncondensing
conditions
Storage ambient -4°F to 149°F (-20°C to 65°C); 90% RH maximum, noncondensing
conditions
Dimensions 5 5/16 in. x 5 3/16 in. x 6 3/8 in. (150 mm x 131 mm x 162 mm)
Compliance United States UL Listed, CCN XAPX, File E194024; to UL60730-1 Automatic Electric
Controls for Household and Similar Use, Part 1: General Requirements.
Fourth Edition, dated November 13, 2013; and UL 60730-2-14 Automatic
Electrical Controls for Household and Similar Use; Part 2: Particular
Requirements for Electric Actuators, Second Edition,
Dated February 27, 2013.
Plenum-Rated (UL 2043). Suitable for use in other environmental air
space (plenums) in accordance with Section 300.22 (C) of the National
Electric Code.
Canada UL Listed, CCN XAPX7, File E194024; to CAN/CSA-E60730-1:02,
Standard for Automatic Electrical Controls for Household and Similar Use,
Part 1: General Requirements, Third Edition, dated July 2002; and
Amendment, February 1, 2007.
Europe CE Mark - Johnson Controls declares that this product is in compliance
with the essential requirements and other relevant provisions of the EMC
Directive 2004/108/EC and Low Voltage Directive
2006/95/EC.
Shipping Weight 2.85 lb (1.25 kg)
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 shall not be liable for damages resulting from misapplication or
misuse of its products.
Single point of contact
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