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O peration VA-900x-02 Series Two-Position Electric Actuators (See Figure 2.) A controller sends a 120 VAC power source to the actuator at terminals 1 and 2 (open) or 1 and 3 (close) depending on the desired movement of the valve. This signal activates the motor, causing the cam post and coupled valve shaft to rotate in the proper direction to accurately position the valve. When the valve reaches its fully open or closed position, the cams are engaged causing the corresponding limit switch to open and shut off power to the motor. Field calibration of the limit switches is not required. Note: All VA-900x-02 Series Two-Position Electric Actuators can be positioned manually using the integral handwheel. In addition, an automatic lockout safety switch prevents electrical operation during manual override. VA-900x-01 Series Modulating Electric Actuators (See Figure 3.) A controller sends a command signal (typically 4 to 20 mA DC) to the actuator terminal board as illustrated in Figure 6. This signal is compared to the actual position of the valve via the feedback potentiometer. The resulting signal activates the motor to rotate the cam post and coupled valve shaft in the proper direction to accurately position the valve. When the valve reaches its fully open or closed position, the cams are engaged causing the corresponding limit switch to open and shut off power to the motor. Field calibration of the limit switches is not required. Note: All VA-900x-01 Series Modulating Electric Actuators can be positioned manually using the integral handwheel. In addition, an automatic lockout safety switch prevents electrical operation during manual override. Figure 2: Internal View of a VA-900x-02 Series Two-Position Electric Actuator Figure 3: Internal View of a VA-900x-01 Series Modulating Electric Actuator 2 VA-9000 Series Electric Rotary Actuators Product Bulletin
Table 1: Model Numbers and Miscellaneous Specifications Johnson Controls Actuator Code Number Johnson Controls Actuator Sub-Code VA-9007-02 -927 VA-9008-02 -928 VA-9007-01 -907 VA-9008-01 -908 Bray Series Number S71-0100 On-Off S71-0200 On-Off S71-0100 Modulating S71-0200 Modulating Service Two-Position Two-Position Modulating Modulating Output Torque Value* lb·in (N·m) 10,000 (1,130) 21,000 (2,373) 10,000 (1,130) 21,000 (2,373) Stroke Time in Seconds Current Rating in Amperes 30 2.8 55 7.2 60 2.8 55 7.2 Shipping Weight lb (kg) 34.0 (15.4) 93.0 (42.2) 36.0 (16.3) 95.0 (43.1) 9 (229) 2-1/8 (54) Clearance Required for Cover Rem oval 10 (254) Close Conduit Port 3/4 in. NPT 2-11/16 (68) Open 10-7/16 (265) 13 (330) Manual Position 13-1/2 (343) Auto Position 3-1/3 (85) 3-1/4 (83) 9-1/16 (230) 1/2 x 1/4 Key Slot (Two Locations) 1/2-13 UNC x 3/4 DP 3-1/4 Diameter x 3-3/4 DP 3-1/2 (89) 3-5/16 (84) 2-1/16 (52) 5-15/16 (151) 8-3/8 (213) Figure 4: VA-9007-0x Series Electric Rotary Actuators Dimensions, in. (mm) VA-9000 Series Electric Rotary Actuators Product Bulletin 3
Page 1: FANs 977, 125, 1628.3 Product Bulle
Page 5 and 6: I nstallation The VA-9000 Series El
Page 7 and 8: Table 2: Accessories and Repair Par

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