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Fig. 6—Internal schematic of Series 72 Motors.
+
–
F
ELECTRONIC
CIRCUIT
TRIAC
TRIAC
SWITCHING
SWITCHING
FEEDBACK
POTENTIOMETER
OPEN
CLOSE
LIMIT
LIMIT
CW
CCW
WINDING
WINDING
(OPEN)
(CLOSE)
2
2
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
1
OVERLOAD PROTECTION AS REQUIRED.
DIRECTION OF MOTOR TRAVEL AS VIEWED FROM POWER END.
2
INTERNALLY MOUNTED TRANSFORMER. DO NOT CONNECT
3
POWER SUPPLY TO T1 AND T2.
BRAKE CIRCUITRY ONLY ON SPRING RETURN MODELS.
4
Fig. 7—Typical system wiring.
MOTOR
T1
CONTROLLER
T2
-
-
+
+
F
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQURED.
CONNECTING F TO – WILL DRIVE MOTOR TO FULLY OPEN.
2
M7261,M7272,M7274,M7281,M7282,M7284,M7285,M7286,M7294
T2
4
BRAKE
CIRCUITRY
1
3
L1
(HOT)
L2
T1
M5511
1
L1
(HOT)
L2
24V
2
M5778
Fig. 8—Driving up to six motors from one 4 to
20 mA controller.
4-20 mA
CONTROLLER
-
+
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQURED.
2
CONNECTING F TO – WILL DRIVE MOTOR TO FULLY OPEN.
When used with liquid-tight conduit connectors, the
wiring box provides NEMA 3 weather resistance for the
motor. The wiring box, standard with replacement motors,
also provides knockouts for wiring conduits and encloses
terminals. The wiring box is required for housing an inter-
nal transformer or internal auxiliary switches.
Wire the motor as follows:
1. Remove the wiring box cover by removing the four
screws holding the cover to the motor.
2. Wire motor to system using quick-connect terminals
in wiring box.
3. Replace wiring box cover.
AUXILIARY SWITCH
The auxiliary switches are actuated by adjustable cams.
These cams can be set to actuate the switches at any angle
within the stroke of the motor. Also, switch differentials of
1° or 10° can be selected.
Motors with factory added auxiliary switches are shipped
in the closed position (fully counterclockwise
viewed from the power end of the motor) with auxiliary
cams set to actuate switches 30° from the closed position
and to provide 1° degree differential. With the motor in the
closed (fully counterclockwise
iary switch breaks contacts R-B. See Fig. 10 for auxiliary
switch wiring.
9
INSTALLATION
L1
L2
(HOT)
1
MOTOR
-
T1
+
T2
2
F
MOTOR
-
T1
+
T2
2
F
MOTOR
-
T1
+
T2
F
2
M5774
) position, the auxil-
63-2202—3
, as
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