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Fig. 6—Parallel-connected motors with one
input signal.
DAMPER
MOTORS
C
L1
L1
(HOT)
R
1
L2
L2
F
C
L1
R
L2
F
C
L1
R
L2
F
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
Fig. 7—Optional override switches to drive
motor open or closed.
DAMPER MOTOR
C
L1
L1
(HOT)
R
1
L2
L2
F
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
OPTIONAL N. O. SWITCH, MOTOR WILL RUN TO FULLY CLOSED
2
(M7161G, M7164G) OR FULLY OPEN (M7161A,B; M7164A,B; M7184A)
POSITION WHEN SWITCH CLOSES, AS LONG AS POWER IS
AVAILABLE AT L1, L2.
3
OPTIONAL N. C. SWITCHES, FINE SILVER OR DRY CIRCUIT
CONTACTS REQUIRED. MOTOR WILL RUN TO FULLY OPEN
(M7161G, M7164G) OR FULLY CLOSED (M7161A,B; M7164A,B;
M7184A) WHEN EITHER C OR R LEAD IS OPENED.
AUXILIARY SWITCH SETTING PROCEDURE
(Fig. 9)
CAUTION
!
1. Live circuits are exposed during the auxiliary
switch adjustment procedure. Always turn off
power before adjusting switch cams.
2. Do not turn motor shaft by hand or with
wrench as damage to the motor can result.
+
MODULATING
DC VOLTAGE
SOURCE
M3005
3
+
MODULATING
DC VOLTAGE
2
SOURCE
3
M3004A
Fig. 8—Auxiliary switch color-coded leadwires
in M7161B, M7164B.
BLACK/BLUE
BLACK/RED
BLACK/YELLOW
1
NORMALLY CLOSED CONTACT MAKES RED TO YELLOW WHEN
SWITCH FOLLOWER IS ON UPPER LEVEL.
WIRING SHOULD BE NEC CLASS 1 UNLESS POWER SUPPLY MEETS
2
CLASS 2 REQUIREMENTS. TAPE UNUSED LEADS. MAKE CERTAIN
THE CURRENT DRAW OF THE EXTERNAL CIRCUIT IS LESS THAN
CONTACT RATING OF SWITCH.
LEADS ARE BLACK WITH COLORED TRACERS.
3
NOTE: The following instructions are for normally closed
motors (motor shaft rotates clockwise
viewed from the power end of the motor, on an increase
in signal).
1. Remove cover of wiring box.
2. Run motor to fully closed position.
3. Determine amount of shaft rotation, in degrees, desired
before switch is energized.
4. Turn off power. Note position of cam slots:
a. If 10° differential is desired, rotate the cam with
screwdriver to the desired position for switch
action.
b. If 1° differential is desired, rotate the cam ap-
proximately 180° with screwdriver, then rotate to
desired position for switch action.
NOTE: Each division on the cam represents 15° of motor
rotation. Therefore, if 60° of motor rotation is desired
before switch operates, rotate the cam four divisions from
the reference point.
5. Connect auxiliary equipment to auxiliary switch leads.
See Wiring section.
6. Turn on power and check for proper switch differen-
tial and switching of auxiliary equipment by driving the
motor through full stroke in both directions. If necessary, re-
peat steps 4 and 6 until correct switching action is obtained.
7. Replace cover of wiring box.
CAUTION
!
Before servicing, disconnect all power supplies
to de-energize the auxiliary switches.
7
M7161, M7164, M7184
INSTALLATION
RIGHT
AUXILIARY
SWITCH
N.C.
1
COM.
N.O.
M3003
, as
63-2197—2
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