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Honeywell ML7284, Данные о продукции, Страница: 6 / 8

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ML7284 NON-SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR

63-2504—2

6

12°

82°

M7877

COMMON

COMMON

NO

NO

NC

NC

WHT/RED

WHT/BLU

WHT/YEL

BLACK/RED

BLACK/BLU

BLACK/YEL

INTERNAL
AUXILIARY
SWITCH
3A 24VAC

SWITCHES SHOWN AT ACTUATOR CLOSED POSITION

Fig. 6. ML7284 Actuator wiring for auxiliary switches.

Switches shown at actuator closed

(counterclockwise) position.

L1 
(HOT)

L2

1

1

RED

BLACK

RED

BLACK

ML7284

ML7284

M7616A

POWER SUPPLY.  PROVIDE DISCONNECT MEANS 
AND OVERLOAD PROTECTION AS REQUIRED.

PROPORTIONING
CONTROLLER

PROPORTIONING
CONTROLLER

BROWN

WHITE

BROWN

WHITE

FEEDBACK

INPUT

FEEDBACK

INPUT

Fig. 7. Common transformer with two
controller outputs and two actuators.

M7621A

MOUNTING
BRACKET

TO JUNCTION
BOX (UP TO
3 FT AWAY)

30

30

0

60

60

90

12

12

REVERSE

DIRECT

Fig. 4. ML7284 Actuator typical mechanical connection.

M7623A

ML7284

MODULATING
CONTROL 
SOURCE

BROWN

WHITE

BLACK

RED

24 VAC

FEEDBACK

INPUT

T1

T2

METER

L1 
(HOT)

L2

1

1

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND 
OVERLOAD PROTECTION AS REQUIRED.

Fig. 5. ML7284 typical wiring diagram.

Содержание ML7284

Страница 1: ... 90 low leakage dampers Manual clutch allows for manual adjustment 92 second synchronous timing can eliminate need for feedback position indication in closed loop tempera ture control applications Removable splined output hub permits premounting of hub on damper shaft providing installation flexibility Includes standard reverse direct acting rotation switch on the outside cover Designed for both s...

Страница 2: ...torage Temperature 30 F to 150 F 40 C to 65 C Humidity 5 to 95 percent relative humidity noncondensing Mounting Mounts directly on 3 8 in to 3 4 in 12 to 19 mm round or square damper shaft Minimum shaft length required 2 5 in 64 mm when the shaft attachment is made on the side of the actuator opposite the duct 0 65 in 16 mm when the hub is mounted on the shaft before the actuator is installed Most...

Страница 3: ...tor and mounting bracket in in mm 9 32 7 3 PLACES 1 17 32 39 3 3 32 79 4 102 7 16 11 1 1 4 32 7 11 16 196 8 7 16 215 36 914 1 2 12 5 8 17 13 32 10 1 2 13 3 4 19 7 8 22 1 25 3 5 32 80 1 2 13 1 2 13 1 11 16 43 2 1 2 63 3 5 16 84 4 1 2 114 5 127 6 152 1 4 6 1 1 REMOVABLE RETAINING RING FOR REMOVAL OF HUB SLEEVE M7618B 1 4 6 1 8 3 2 51 15 16 24 1 29 32 48 ...

Страница 4: ...ion The ML7284 Non Spring Return Direct Coupled Damper Actuator is designed with removable hub inserts to accommodate specific damper shaft sizes Proper insert selection is necessary to avoid excessive strain on the output gear Most ML7284 Actuators are shipped with a 1 2 in hub insert For field use three hub insert sizes are available See the Accessories listing in the Specifications section Shaf...

Страница 5: ...cket on the damper housing 4 Remove the mounting bracket and actuator 5 Drill or center punch the starting holes for the mounting bracket screws or use no 10 self tapping sheet metal screws not provided 6 Place the actuator and mounting bracket back into position over the damper shaft and install the mounting bracket screws 7 Move damper shaft either fully cw or ccw 8 Fully depress and hold diseng...

Страница 6: ...R SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED PROPORTIONING CONTROLLER PROPORTIONING CONTROLLER BROWN WHITE BROWN WHITE FEEDBACK INPUT FEEDBACK INPUT Fig 7 Common transformer with two controller outputs and two actuators M7621A MOUNTING BRACKET TO JUNCTION BOX UP TO 3 FT AWAY 30 30 0 60 60 90 12 1 2 REVERSE DIRECT Fig 4 ML7284 Actuator typical mechanical connection M7623A M...

Страница 7: ...pdt auxiliary switches that are factory set to make common to normally open at 12 and 82 rotation from the closed counter clockwise stop See Fig 6 OPERATION The ML7284 Non Spring Return Direct Coupled Damper Actuator is designed to be used in ventilating and air condi tioning installations to operate dampers ventilation flaps and louvers requiring up to 150 lb in torque The ML7284 Non Spring Retur...

Страница 8: ...eywell Inc 1985 Douglas Drive North Golden Valley MN 55422 TROUBLESHOOTING If the actuator does not operate properly during the checkout perform the following troubleshooting steps Perform these steps before replacing the actuator 1 Check actuator label to verify proper power and control signal requirements for the application 2 Check for presence of 24 Vac at the black T1 and red T2 leads when th...

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