Honeywell M9494 ユーザーズマニュアル

Set cams by moving top of screwdriver only. Press-
ing screwdriver against sides of cam slots could

cause damage to motor end switches.

4. Insert 

 in. screwdriver blade into slot on outer

yellow cam and MOVE TOP OF SCREWDRIVER as far as
possible clockwise

 

 Repeat in successive cam slots

until outer cam is against clockwise 

 stop.

NOTE: Excessive force will damage cam stop on hub.

5. Check motor stroke before connecting linkage.

6. Disconnect 135 ohm pot, reconnect controller, re-

place top cover on motor.

7. Attach linkage to motor.

1. Turn stroke pot fully counterclockwise 

 

2. Drive motor to mid-position, using 135 ohm pot

(Q209 or 

 or by jumpering B-R-W.

3. Insert 

 in. screwdriver into slot on inner yellow

cam and MOVE TOP OF SCREWDRIVER as far as

possible clockwise 

 (viewed from power end). Re-

peat in successive cam slots until inner cam is against

clockwise stop.

NOTE: Excessive force will damage cam stop on hub.

4. Insert 

 in. screwdriver blade into slot on outer

yellow cam and MOVE TOP OF SCREWDRIVER 

 far as

possible counterclockwise 

 

 Repeat in successive

cam slots until outer cam is against counterclockwise stop.

NOTE: Excessive force will damage cam stop on hub.

5. Check motor stroke before connecting linkage.

6. Disconnect 135 ohm pot, reconnect controller, re-

place top cover on motor.

7. Attach linkage to motor.

AUXILIARY SWITCHES

The auxiliary switches in 

 motors are actu-

ated by adjustable cams. The cams are mounted on the

motor shaft at the power end of the motor. The settings of

the cams determine the point in motor shaft rotation at

which the auxiliary equipment will be switched on or off.
These cams can be set to actuate switches at any angle
within the stroke of the motor. Also each cam provides a
fast rise portion for switching (1   differential) and a slow

rise portion for slow switching 

 differential).

Switching action and color coding are shown in Tables

1 and 2 on page 8.

Motors with factory added auxiliary switches are

shipped in the closed position (counterclockwise 

 

as viewed from power end) with auxiliary cams set to

actuate switches 

 from the closed position, and to

provide   differential. Wiih motor in closed (full counter-

clockwise 

 

 position, auxiliary switch breaks R-B.

Do not turn motor shaft by hand or with a wrench as

damage to the gear train and circuit board stroke

limit contacts will result.

 PROCEDURE (Fig. 9)

1. Removetopcoverfrom 

 gain access to motor

terminals and cam adjustments.

2. Disconnect controller from motor and connect 135

ohm manual potentiometer with R-W-B terminals on pot

connected to corresponding terminals on motor (Fig. 9).

3. Adjust 135 ohm pot so that motor shaft turns to

position where auxiliary equipment is to be switched.

4. Insert a 

 in., straight-blade screwdriver into slot on

cam associated with selected auxiliary switch. The inner

(blue) cam actuates the inner (right) switch, the outer (red)

cam actuates the outer (left) switch. MOVE TOP OF

SCREWDRIVER to set cams.

5. For switch differential of 1   check continuity of aux-

iliary switch R-B contacts and rotate cam as follows:

a.

 contacts are open, rotate cam clockwise 

 until

R-B contacts close.

b.   contacts are closed, rotate cam counterclockwise

until R-B contacts open.

6. For switch differential of 

 check continuity of

auxiliary switch R-B contacts and rotate cam as follows:

a.   contacts are open, rotate cam counterclockwise

 until R-B contacts close.

b.   contacts are closed, rotate cam clockwise 

until R-B contacts open.

c. Final adjustment in the proper direction should be

made to obtain contact make or break at the desired

position.

7. Check for proper differential and switching of 

iaryequipmentby runningmotorthroughfullstroke 

directions), using 135 ohm pot. Repeat adjustment if

necessary.

8. Disconnect 135 ohm pot, reconnect controller, re-

place top cover on motor.

NOTE: If differential is changed from   to 

 the switch-

ing action is reversed, thus: switch contacts R-B make

and R-W 

 acounterclockwise (closed) rotation.

 SERIES 90 CIRCUIT CONNECTION DIAGRAMS (Figs. 10-13)

The potentiometers, one in the controller and one in the These motors are designed for use in series 90 propor-

motor, along with resistor network, form a bridge circuit. As tioning control circuits employing a 135 ohm series 90
long as the value of the controlled medium remains at the controller. Series 90 high or low limit controls or manual

controller set point, the circuit is balanced, and the motor minimum position potentiometers may also be used in the
does not run. control circuit.

When the value of the controlled medium changes, the

potentiometer wiper in the controller is moved, which

unbalances the bridge circuit. This unbalance is amplified,
and energizes 

 switching to run the motor in the

direction necessary to correct the change in temperature
or pressure. The motor turns the feedback potentiometer
to rebalance the circuit and stop the motor.

The M9484 can also be used with some electronic

controllers which provide a 4-20 

 control output.   is

necessary to use a resistor kii (4074EED for controlling up

to 6 motors) or Q7230 Interface Module to interface to the

4-20 

 source.

The standard series 90 controller has 

 W, and B

terminals. As the controller reduces Rto W resistance, the

motor will drive closed (CCW as viewed from the power

end).

10