Johnson Controls VA-9070 Series Manual
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Johnson Controls VA-9070 Series Manual

Johnson Controls VA-9070 Series Manual

Electric rotary actuators
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VA-9070 Series Electric Rotary Actuators
Appendix A
Appendix B
© 2005 Johnson Controls, Inc.
Code No. LIT-977325
Technical Bulletin
Issue Date
Page
www.johnsoncontrols.com
March 14, 2005
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  • Page 1: Table Of Contents

    Technical Bulletin Issue Date March 14, 2005 VA-9070 Series Electric Rotary Actuators Introduction Page Internal and External Components Electrical Operation Mechanical Operation Manual Override Operation Pre-installation Storage Installation Mounting Wiring Setup and Adjustment Accessories Troubleshooting Procedures Disassembly and Assembly General Information...

  • Page 2: Introduction

    The external coating is a polyester powder coat, providing resistance to Ultraviolet (UV) radiation exposure and chemical exposure. The motor in the VA-9070 Series actuator is a permanent induction split Electrical capacitor design (single phase AC power). Travel limit switches are...

  • Page 3: Manual Override Operation

    Prevent condensation from forming by maintaining a near constant external temperature and supplying power to the heater internal to the actuator. VA-9070 Series Electric Rotary Actuators Technical Bulletin...

  • Page 4: Installation

    Installation VA-9070 Series electric actuators are suitable for direct mounting on most Mounting Johnson Controls VF Series Butterfly Valves. VA-9070 Series Electric Actuators cannot be used on the VF4000 and VF5000 Series Butterfly Valves with the M9000 Series Actuators. Installing the VA-9070 Series actuator onto other quarter-turn valves or devices requires proper mounting hardware.

  • Page 5: Wiring

    YELLOW Only Black CLOSE HEATER (OPTIONAL) N.C. N.O. Close BLUE AUX CLOSE Open Ground Ground Figure 1: Typical Wiring Diagram of VA-9070 Series Two-Position Electric Rotary Actuator (Shown with Heater and Auxiliary Switches) VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 6 Phase Line Power Open Limit Supply Ground Heater Actuator shown in the Closed Position Manual Override not engaged Figure 2: Typical Wiring Diagram of VA-9070 Series Modulating Electric Rotary Actuator (Shown with Heater) VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 7 Multiple Actuator Use a multiple pole switch to connect two VA-9070 Series electric (Parallel) Wiring actuators. See the Correct Wiring schematic in Figure 3. Do not connect more than one actuator to a Single-Pole, Double-Throw (SPDT) switch. In the actuator, voltage is present on the non-powered motor winding (opposite to the powered motor winding).

  • Page 8: Setup And Adjustment

    Manual travel stops are designed to prevent manual overtravel, not to stall the electric motor. The travel stops have an adjustment range of approximately 10 degrees. Figure 4: Setting the Travel Limit Switches VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 9 • 0 to 10 VDC – wire jumper from CB OPEN to Common (next to CB OPEN). • 2 to 10 VDC – wire jumper from CB CLOSE to Common (next to CB OPEN). See Figure 2 for the location of the input control signal selection terminals. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 10 To resolve the problem, consult the Servo Troubleshooting section in this document. 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. VA-9070 Series Electric Rotary Actuators Technical Bulletin...

  • Page 11: Accessories

    • two No. 6 internal lock washers • one ten-point terminal strip (nine-point for VA-9071 and VA-9072 actuators) • one terminal strip marker for auxiliary switches and/or feedback potentiometer • one small wiring diagram sticker for the additional potentiometer VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 12 4. Move the wiring from the six-point strip to the new terminal strip, reconnecting the wiring in the same positions. 5. Wire the potentiometer to the terminal strip using the small stick-on wiring diagram provided. See Figure 7. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 13 AUX CLOSE Open Ground Ground Figure 7: Typical Wiring Diagram of VA-9070 Series Two-Position Electric Rotary Actuator (Shown with Heater and Auxiliary Switches) 6. Adhere the wiring diagram sticker to the inside of the cover. Setting the Potentiometer 1. Manually operate the actuator hand wheel until the actuator is in the fully closed position.

  • Page 14: Troubleshooting Procedures

    Water leaking in. Check all seals and possible water entry through conduit. Actuator moves Signal has interference. Shield signal from interference. back and forth near set point (hunts). Continued on next page . . . VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 15 Ensure connections to servo from these switches are shorted. Command signal jumper position is not correct. Install or remove jumper. Then Jumper is missing or should be installed. use Autocalibrate button to recalibrate servo. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 16 Displayed after an Invalid Calibration The LED flash rate interval (the time to completely cycle the LED from Off to On) is 1/2 second, except for Normal Operation mode, which is 1 second. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 17 LED resumes with the Normal Operation flash code (Code 1) unless another warning is still pending. Note: If you detect error codes 3, 5, 6, or 7, contact your Bray representative for further information. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 18 Bray representative for assistance. Calibration Error This flash code is displayed after a failed calibration for 3 seconds. See Code 2 and Code 3 in Table 3 for more information. VA-9070 Series Electric Rotary Actuators Technical Bulletin...

  • Page 19: Disassembly And Assembly

    Disassembly and Assembly General VA-9070 Series actuators are differentiated into two groups: Information • VA-9071 and VA-9072 actuators • VA-9073, VA-9074, VA-9075, VA-9076, VA-9077, and VA-9078 actuators Tools Required Table 5: Basic Tools Common to All Actuators Terminal Connections, Cam Adjustment...
  • Page 20 3. Remove the switch plate by unscrewing the seven Phillips-head mounting screws. The switch plate should lift out as an assembly with the camshaft attached. See Figure 9. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 21 Figure 9: Removing the Switch Plate VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 22 Figure 10: Disassembling the Switch Plate 4. Disassemble the switch plate. See Figure 10. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 23 (two lower and one upper). See Figure 11. 6. Remove the gear motor vertically out of the actuator. See Figure 11. Do not misplace the alignment pin. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 24 A spring pin holds the hand wheel in place. Further disassembly of the actuator requires special tools and procedures and is not covered in this document. The reassembly procedure is the opposite of the disassembly procedure. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 25 1. Disconnect all power to the actuator and remove the cover. See Figure 13. 2. Remove the field wiring as well as the internal motor wiring from the terminal strips. See Figure 14. Figure 14: Removing the Switch Plate VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 26 See Figure 15. Figure 15: Actuator with Switch Plate Removed 4. Disconnect the motor leads that run to the capacitor. 5. Unscrew the three mounting screws (two lower and one upper). VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 27 6. Remove the motor vertically out of the actuator. See Figure 16. Do not misplace the alignment pin. Figure 16: Disassembling the Actuator VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 28 See Figure 17. Figure 17: Disassembling the Actuator Further disassembly of the actuator requires special tools and procedures and is not covered in this document. The reassembly procedure is the opposite of the disassembly procedure. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 29 Worm Insulator Spring Pin E-ring Worm Shaft Items 23, 24, and 25 are installed when optional torque switches are required. Worm shaft spacers are used in units when torque switches are not required. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 30 Figure 18: VA-9071 and VA-9072 Actuators, Exploded View VA-9070 Series Electric Rotary Actuators Technical Bulletin...

  • Page 31: Va-9073, Va-9074, Va-9075, Va-9076, Va-9077, And Va-9078 Actuators

    Conduit Plug Spring Pin Name Tag Worm Shaft Items 23, 24, and 25 are installed when optional torque switches are required. Worm shaft spacers are used in units when torque switches are not required. VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 32 Figure 19: VA-9073, VA-9074, VA-9075, VA-9076, VA-9077, and VA-9078 Actuators, Exploded View VA-9070 Series Electric Rotary Actuators Technical Bulletin...
  • Page 33 Appendix B Use this information as a guide to interpret VA-9070 Series (Johnson Controls) and S70 (Bray) Electric Actuator part numbers. Table 8: Code Numbers and Cross-Reference Data for Electric Two-Position Models Johnson Controls Johnson Controls Bray Actuator Only VF Series...
  • Page 34 5,000 (565.0) 70-065y-113zz-536 6,500 (734.5) “y” designates the speed. “zz” designates the voltage. ZZ = Sec = Voltage Controls Group 507 E. Michigan Street P.O. Box 423 www.johnsoncontrols.com Milwaukee, WI 53201 Published in U.S.A. VA-9070 Series Electric Rotary Actuators Technical Bulletin...

This manual is also suitable for:

Va-9071Va9072Va-9073Va-9074Va-9075Va-9076 ... Show all

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