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ML7284 NON-SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR
MOUNTING
BRACKET
Fig. 4. ML7284 Actuator typical mechanical connection.
METER
MODULATING
CONTROL
SOURCE
L2
1
24 VAC
L1
(HOT)
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
Fig. 5. ML7284 typical wiring diagram.
63-2504—2
6 0
3 0
9 0
6 0
3 0
0
TO JUNCTION
BOX (UP TO
3 FT AWAY)
M7621A
ML7284
BROWN
FEEDBACK
WHITE
INPUT
BLACK
T1
RED
T2
M7623A
COMMON
12°
INTERNAL
AUXILIARY
COMMON
SWITCH
82°
3A 24VAC
SWITCHES SHOWN AT ACTUATOR CLOSED POSITION
Fig. 6. ML7284 Actuator wiring for auxiliary switches.
Switches shown at actuator closed
(counterclockwise) position.
PROPORTIONING
CONTROLLER
1
L1
(HOT)
L2
PROPORTIONING
CONTROLLER
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
Fig. 7. Common transformer with two
controller outputs and two actuators.
6
WHT/RED
NO
WHT/BLU
NC
WHT/YEL
BLACK/RED
NO
BLACK/BLU
NC
BLACK/YEL
M7877
ML7284
BROWN
FEEDBACK
WHITE
INPUT
RED
BLACK
ML7284
BROWN
FEEDBACK
WHITE
INPUT
RED
BLACK
M7616A
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