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Idiomas disponibles
Idiomas disponibles
Outdoor
NEMA3R
90°
Fig. 7. Mounting Positions.
WIRING SCHEMATICS
MLx984 actuators are designed to operate from a Safety Extra
Low Voltage, Class II power source. A 7/8 in. (22 mm) wiring
hole is provided for attaching a flexible conduit where required
by local codes. When installing outdoors, weatherproof conduit
fittings approved for outdoor and wet locations must be used.
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can Shock Individuals or Short Equipment Circuitry.
Disconnect power supply to the actuator to prevent
electrical shock and equipment damage, or remove
and cap the air line to the actuator.
NOTE: In all cases when wiring multiple actuators, the power
supply to all actuators must be connected in a "star"
fashion to reduce excessive voltage drop. DO NOT
"daisy chain" i.e. connect power to one actuator then
branch to another.
2
L1
1
24 Vac
L2
POWER SUPPLY PROVIDES OVERLOAD PROTECTION AND DISCONNECT
1
MEANS.
ALLOW UP TO 0.5 AMPS FOR EACH DEVICE. ACTUATORS AND
2
CONTROLLER CAN SHARE SAME TRANSFORMER, PROVIDED THAT THE
VA RATING OF THE TRANSFORMER IS NOT EXCEEDED AND PROPER
PHASING IS OBSERVED. DO NOT MIX A.C. AND D.C. POWER SOURCES.
3
CONTROLLER CAN BE LOW VOLTAGE SPDT SERIES 20 "ON-OFF" OR
SP3T SERIES 60 "FLOATING" (TRI-STATE) TYPE. TERMINALS R AND T5
ARE CONNECTED INSIDE THE ML6984.
Fig. 8. 3-Wire Control of ML6984 with Series 60 Controller.
Indoor
>5°
>5°
M25491
Typical Electro-mechanical
ML6984
Controller
W
R
W
R
B
B
ML6984, ML7984 SERIES 4000 DIRECT COUPLED VALVE ACTUATORS
Operation
The recommended valve actuator power source is a Safety
Extra-Low Voltage (SELV) Class II, 24 V transformer or
regulated 28 Vdc across terminals T5 and T6. Internal circuitry
provides dc power for the electronic sensing and drive motor
circuits.
2
L1
1
L2
POWER SUPPLY PROVIDES OVERLOAD PROTECTION AND DISCONNECT
1
MEANS.
ALLOW UP TO 0.5 AMPS FOR EACH DEVICE. ACTUATORS AND
2
CONTROLLER CAN SHARE SAME TRANSFORMER, PROVIDED THAT THE
VA RATING OF THE TRANSFORMER IS NOT EXCEEDED AND PROPER
PHASING IS OBSERVED. DO NOT MIX A.C. AND D.C. POWER SOURCES.
3
CONTROLLER CAN BE LOW VOLTAGE SPDT SERIES 20 "ON-OFF" OR
SP3T SERIES 60 "FLOATING" (TRI-STATE) TYPE. TERMINALS R AND T5
ARE CONNECTED INSIDE THE ML6984.
Fig. 9. 3-Wire Control of ML6984 with Electronic Controller.
3
Typical SPDT Controller
W
R
B
1
POWER SUPPLY PROVIDES OVERLOAD PROTECTION AND DISCONNECT
MEANS.
2
ALLOW UP TO 0.5 AMPS FOR EACH DEVICE. ACTUATORS AND
3
CONTROLLER CAN SHARE SAME TRANSFORMER, PROVIDED THAT THE
VA RATING OF THE TRANSFORMER IS NOT EXCEEDED AND PROPER
T6
PHASING IS OBSERVED. DO NOT MIX A.C. AND D.C. POWER SOURCES.
3
CONTROLLER CAN BE LOW VOLTAGE SPDT SERIES 20 "ON-OFF" OR
T5
SP3T SERIES 60 "FLOATING" (TRI-STATE) TYPE. TERMINALS R AND T5
ARE CONNECTED INSIDE THE ML6984.
4
MULTIPLE ACTUATORS CONTROLLED BY A COMMON CONTROLLER IN
PARALLEL MUST BE WIRED SO THAT THEY ALL TRAVEL IN THE SAME
DIRECTION. REVERSE ACTING ACTUATORS WILL NOT OPERATE
RELIABLY IN COMBINATION WITH DIRECT ACTING UNITS DUE TO
GEARBOX TOLERANCES. USE ML7984 MODULATING ACTUATORS, OR
DEDICATED CONTROLLERS, OR SEPARATE CONTROLLER OUTPUTS
FOR EACH GROUP INSTEAD.
Fig. 10. 5-Wire Control of ML6984.
M25492
5
Typical Electronic
ML6984
Controller
C
1
H
3
4
2
ML6984
W
T6
24 Vac
R
T5
OR
B
28 Vdc
T6
4
T5
ML6984
W
T6
R
T5
B
95C-10939EFS—03
3
W
T6
R
T5
B
M25493
L1
1
L2
M25494
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