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ML6195, ML6295 SPRING RETURN DIRECT COUPLED ACTUATORS
63-2537—1
6
Fig. 6. ML6195 typical wiring diagram.
L1
(HOT)
L2
1
1
24 VAC
6 VIOLET
B = CW
W = CCW
T2
T1
7 ORANGE
1 RED
2 BLACK
ML6195 ACTUATOR
M12445
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOADPROTECTION AS REQUIRED.
SERIES 60 CONTROL
(FLOATING)
L1
(HOT)
L2
1
1
24 VAC
6 VIOLET
S1 GREEN/RED
P1 WHITE/RED
S2 GREEN/BLUE
S3 GREEN/PINK
P2 WHITE/BLUE
P3 WHITE/PINK
S4 BLACK/RED
S5 BLACK/BLUE
S6 BLACK/PINK
GND GREEN
B = CW
W = CCW
T2
T1
INTERNAL
FEEDBACK
POT
1000 OHMS
7 ORANGE
1 RED
2 BLACK
ML6295 ACTUATOR
M12446
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOADPROTECTION AS REQUIRED.
SERIES 60 CONTROL
(FLOATING)
OPEN
AUX
SWITCH
A
AUX
SWITCH
B
Fig. 7. ML6295 typical wiring diagram.
OPERATION
The ML6195/ML6295 DCA is designed for use in HVAC
installations to operate dampers, ventilation flaps, louvers and
valves requiring up to 142 lb-in. (16 N•m) of torque. If the
power fails, the actuator spring returns it to the fail-safe
position. The actuator is designed for reversible mounting. The
housing is asymmetrical to indicate the spring return direction
(see Fig. 2). The actuator drives from -5° to 90° (as indicated
on the label) and spring returns back to -5°.
The ML6195/ML6295 DCA is operated by an spdt floating
(Series 60) controller (see Fig. 6 and Fig. 7). The actuator
drives toward its fully open position when the controller
makes T2 to B. When the controller makes T2 to W, the
actuator drives toward its fully closed position. It stops when
neither contact is made.
The actuator has a position indicator to show shaft position.
As the indicator moves with the shaft, it is an angular
representation of the shaft position; and it can be placed in
numerous distinct positions. Remove the indicator by simply
pulling it from the coupling. It can then be rotated and
repositioned at 5° increments using the two sets of three pins
on the coupling.
Manual Override
The actuator can be operated with no power present. Use this
feature during installation or to move and lock the damper or
valve shaft position when there is no power.
To operate the manual override:
1. If the power is on, turn it off.
2. Insert the supplied key (Allen wrench) as shown in Fig. 8.
3. Rotate the key in the direction indicated on the cover.
4. Once the desired position is reached, hold the key to
prevent the spring return from moving the actuator.
5. With the key held in place, use a screwdriver to turn the
gear train lock pin in the indicated direction.
NOTE: No more than 1/8 turn of the lock pin is
required to engage the lock; a slight click is
heard and the pin resists further rotation.
6. Remove the key without rotating it further.
To release the manual override with no power present:
1. Insert the supplied key.
2. Turn the key 1/4 turn in the direction indicated on the
cover.
3. Remove the key without engaging the gear train lock pin.
4. The spring will return the actuator to the fail-safe position.
Once power is restored, the actuator will return to normal
automated control.
Fig. 8. Manual override of ML6195/ML6295
Spring Return Direct Coupled Actuators.
M12447A
ROTATING LOCKING IN PLACE
95°
"CLICK"