Honeywell ML7984B manual

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Table of contents for the manual

  • Page 1

    ML7984B VALVE ACTUATOR The ML7984B is a self-contained, self-adjusting, linear motorized linkage that mounts directly onto V5011 two-way or V5013 three-way valves and provides up to 19 mm (3/4") of linear travel (stem lift). For use with a Pulse Width Modulating or alternately a 2-10Vdc analog signal controller. • Allows the use of one commo[...]

  • Page 2

    ML7984B SPECIFICATIONS • ORDERING INFORMATION Specifications IMPORTANT: The specifications given in this publication do not include normal manufacturing tolerances. Therefore, an individual unit may not exactly match the listed specifications. Also, this product is tested and calibrated under closely controlled conditions and some minor differenc[...]

  • Page 3

    Installation ML7984B SPECIFICATIONS •INSTALLATION FIG. 1 -- DIMENSIONS OF ML7984 VALVE ACTUATOR IN MM (INCHES). FIG.2 -- MINIMUM MOUNTING CLEARANCE. ! CAUTION 1. Installer must be a trained service technician. 2. DO NOT electrically operate the ML7984 before assembly to the valve because damage not apparent to the installer may occur. 2. Although[...]

  • Page 4

    ML7984B INSTALLATION FIG.3 -- PREPARATION FOR VALVE ASSEMBLY. 5. Remove the plastic cover from the ML7984 by loosening the two screws located on the top (Note: These screws are captive. Rotate three complete revolutions to remove cover ). Drop either slot headed or Allen hex type of set screw (both are included in the plastic bag ) into the top of [...]

  • Page 5

    ML7984B WIRING 4 24 Vac 1 2 ML7984B L1 L2 T5 T6 R W C 3 SIGNAL SOURCE B + 2-10 Vdc PWM OR + T6 28 Vdc - T5 1 3 2 4 Allow 0.5 amps maximum for each device. Actuators and controller can share same transformer providing the VA rating of the transformer is not exceeded and proper phasing is observed. "T5" and "W" terminals are facto[...]

  • Page 6

    ML7984B OPERATION AND CHECKOUT Operation and checkout Operation: The recommended valve actuator power source is a class 2, 24V transformer or 28Vdc across terminals T5 &T6 (See Fig.7). The internal circuitry provides dc power for the electronic sensing and drive motor circuits. The sensing circuits respond to the signal across the input termina[...]