5.With the travel switch in the closed position, rotate the handwheel one-half turn CW, then turn the closed travel stop CW until it bottoms out against the output gear. Lock the travel stop bolts.

Open Travel Switch and Travel Stop Adjustment

Manually operate the actuator handwheel Counterclockwise (CCW) until the valve is fully open. Follow the same procedure as outlined in the Closed Travel Switch and Travel Stop Adjustment section, except use the green cam (open) and the travel stop located on the left side (as seen when viewed from the travel stop side of the actuator).

Servo Commissioning

Ensure that the travel switches and travel stops are set properly before calibrating the servo. Use a controlled and known command signal source. Factory-installed servos are pre-calibrated.

Setting the Input Control Signal

Set the input control signal for the input type used. See Table 1.

Setting the Potentiometer

1.Manually operate the actuator handwheel until the unit is in the fully closed position.

2.Rotate the black potentiometer drive gear adjustment knob to barely engage the potentiometer gear segment at the closed position.

3.Manually operate the actuator to the fully open position.

4.Fine-tune the potentiometer adjustment at this end to equalize the difference between the ends. The potentiometer gear segment should maintain engagement with the drive gear throughout full actuator travel.

Table 1: Input Control Signal Switch Settings

Setting the Servo

1.Wire the input signal to the incoming command signal terminals. Ensure that you maintain proper polarity when making wiring connections.

2.Connect the power supply and activate the actuator.

3.Check the Status Light-Emitting Diode (LED).

•If the red Status LED is flashing, refer to the Servo Troubleshooting section in the VA-9070 Series Electric Rotary Actuators Technical Bulletin (LIT-977325).

•If the green Status LED is flashing, press and hold the CALIBRATE button until the green Status LED flashes rapidly (approximately

2 seconds), then release the CALIBRATE button. The servo drives the valve to the open and close travel limit switch settings. When the calibration is complete, the green Status LED resumes flashing at the normal rate.

•If the Status LED alternately flashes red, then flashes green, the calibration has failed. To resolve the problem, refer to the Servo Troubleshooting section in the VA-9070 Series Electric Rotary Actuators Technical Bulletin (LIT-977325).

4.After calibration is complete, apply the desired minimum and maximum input signals, and observe the actuator operation through one full cycle for proper operation.

Repair Information

If the VA-9070 Series Electric Rotary Actuators for Two-Position and Modulating Service fails to operate within its specifications, replace the unit. For a replacement VA-9070 Series actuator, contact the nearest Johnson Controls® representative.

Switch

 

 

Input Signal

 

 

 

 

 

 

 

 

4 to 20 mA

DC 0 to 5 V

 

DC 0 to 10 V

DC 2 to 10 V

 

 

 

 

 

 

1

OFF

ON

 

ON

ON

 

 

 

 

 

 

2

OFF

OFF

 

ON

ON

 

 

 

 

 

 

3

OFF

OFF

 

OFF

ON

 

 

 

 

 

 

Controls Group

Metasys® is a registered trademark of Johnson Controls, Inc.

507 E. Michigan Street

All other marks herein are the marks of their respective owners.

Milwaukee, WI 53202

© 2007 Johnson Controls, Inc.

2 VA-9070 Series Electric Rotary Actuators for Two-Position and Modulating Service Installation Instructions

Published in U.S.A.

www.johnsoncontrols.com

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Johnson Controls VA-9070 Repair Information, Open Travel Switch and Travel Stop Adjustment, Servo Commissioning
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VA-9070 specifications

The Johnson Controls VA-9070 is a cutting-edge building automation system designed to enhance energy efficiency, comfort, and overall operational performance for both commercial and industrial facilities. As a key component of the company's comprehensive suite of building management solutions, the VA-9070 stands out due to its advanced features, reliable technologies, and impressive characteristics.

One of the primary features of the VA-9070 is its ability to deliver centralized control for various building systems, including HVAC, lighting, security, and energy management. This integration allows facility managers to monitor and control different subsystems from a unified platform, leading to streamlined operations and improved decision-making. The system's user-friendly interface simplifies the management process, enabling users to quickly access real-time data and make informed adjustments as needed.

The VA-9070 leverages advanced technologies, including Internet of Things (IoT) connectivity and cloud computing capabilities. This allows for remote access and control of building systems, providing flexibility that is essential for modern facility management. Users can track energy consumption patterns, detect anomalies, and identify opportunities for energy savings from anywhere, anytime, using mobile devices or web-based dashboards.

Another notable characteristic of the VA-9070 is its robust analytics engine, which interprets data collected from various building systems. This functionality helps users identify trends, optimize operational efficiency, and predict maintenance needs before issues arise. With predictive analytics, managers can create maintenance schedules that minimize downtime and extend the lifespan of critical equipment.

In addition to its focus on energy efficiency, the VA-9070 prioritizes user comfort and safety. The system can adjust heating, cooling, and lighting based on occupancy patterns and real-time environmental data. This ensures that spaces are not only energy-efficient but also conducive to occupant well-being.

Built to last, the VA-9070 is designed with durability in mind, featuring reliable hardware and software components that withstand the rigors of demanding environments. Its compatibility with a wide range of protocols and standards ensures seamless integration with existing systems, making it a versatile choice for facilities looking to upgrade their building automation capabilities.

In summary, the Johnson Controls VA-9070 is a powerful and flexible building automation system that combines centralized control, IoT connectivity, and intelligent analytics. Its focus on energy efficiency, occupant comfort, and operational reliability makes it an invaluable tool for facility managers aiming to optimize their building performance.
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