Summary of the content on the page No. 1
ML6131
Direct Coupled Actuator
PRODUCT DATA
FEATURES
• Mounts directly on damper shaft.
• 6 lb-in. torque.
• Selectable 45°, 60°, and 90° stroke in either clockwise
(cw) or counterclockwise (ccw) directions.
• 15 second timing model suitable for use with pressure
independent VAV systems.
• Magnetic coupling typically provides a maximum of
18 lb-in. stall torque eliminating the need for
mechanical stops or limit switch adjustments.
• Two field-addable auxiliary switches.
• Field-addable auxil
Summary of the content on the page No. 2
ML6131 DIRECT COUPLED ACTUATOR SPECIFICATIONS Models: Feedback Potentiometer Ratings (ML6131B): ML6131B: 6 lb-in. torque, selectable 45°, 60°, and 90° stroke 200976A,C Electrical Rating: 24 Vac, 50/60 Hz, 2.25 watts. in both cw and ccw directions. 15 second timing, spdt Floating Series 60, includes auxiliary potentiometer drive Resistance Output (Resistance Linear as Measured for use with field-addable feedback potentiometer. Includes Between Terminal R-B): minimum position adjustment setscrew
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ML6131 DIRECT COUPLED ACTUATOR 2-7/8 (73) CAUTION 1-11/16 Actuator Damage Hazard. (42) Deteriorating vapors and acid fumes can damage the actuator metal parts. 1 (25) 1/8 Install actuator in areas free of acid fumes and OPTIONAL (3) AUXILIARY deteriorating vapors. SWITCH Location 4-7/8 Choose a location for the actuator that allows enough CW (123) clearance for mounting accessories and for servicing. COM 4-1/4 (108) CCW Mounting These actuators are designed to open a damper or valve by driv
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ML6131 DIRECT COUPLED ACTUATOR Preparation Before mounting the actuator onto the shaft, determine the following: 1. Size of the shaft (3/8 in. to 1/2 in.). 2. Direction the shaft rotates to open the device (cw or ccw). See Fig. 3. 3. Degrees of actuator stroke for opening device (45°, 60°, or 90°). If the shaft is 3/8 in. round or square, use part number 201391 Shaft Adapter provided inside the bag assembly shipped with the actuator. Place the adapter opposite the setscrews (see Fig. 4). M
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60 60 45 45 60 60 45 45 CW COM CCW ML6131 DIRECT COUPLED ACTUATOR 1. Determine the direction of the desired closing rotation. 2. Move the actuator to the position fully opposite the RANGE STOP PIN desired closing rotation (if cw closing rotation is desired, move the actuator to the full ccw position). 3. Determine the correct hole for the setscrew using Fig. 8 ACTUATOR PLATES and the results of step 1. THIS SETSCREW CORRESPONDS WITH CLOSING IN THE THIS SETSCREW CW DIRECTION CORRESPONDS WI
Summary of the content on the page No. 6
ML6131 DIRECT COUPLED ACTUATOR 10. Rotate the actuator to minimum position using the The 201052A, B and C Auxiliary Switches are field-addable. manual declutch; see Manual Operation (Declutch) For mounting instructions, see form 63-2218, provided with section. the device. 11. With the actuator at minimum position, adjust the position more accurately using air flow measurements. IMPORTANT When operating an ML6131 from a two-position IMPORTANT controller, a 201052B Auxiliary Switch is required
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60 60 45 45 CW COM CCW ML6131 DIRECT COUPLED ACTUATOR Auxiliary Potentiometers AUXILIARY POTENTIOMETER The 200976 Auxiliary Potentiometer mounts on the face of MOTOR RW RB certain ML6131A actuators as shown in Fig. 11. The POSITION RESISTANCE RESISTANCE potentiometer shaft has a slipping collar, which means that if FULLY CW one of the two limits of the potentiometer is exceeded, the 500 OR 0 OHMS 24V (COM-CW) 2000 OHMS collar will continue to rotate, causing no damage to the potentiometer it
Summary of the content on the page No. 8
ML6131 DIRECT COUPLED ACTUATOR OPERATION CHECKOUT To check out the ML6131, determine the direction the damper VAV Systems shaft moves to open the damper (cw or ccw). See Fig. 3: VAV systems control the temperature within a space by 1. Place 24 Vac across the appropriate COM and CW or varying the volume of supply air. Air is delivered to the space COM and CCW terminals to energize the actuator. The at a fixed temperature. The volume of supply air is controlled ML6131 should begin to open the d
