Honeywell Modutrol IV Series 61 Manual page 11

Auxiliary Switch Adjustment
IMPORTANT
When adjusting the auxiliary switch cams use the
following procedure:
1.Insert 1/8 in. screwdriver blade into a slot on cam
and move the screwdriver top as far as possible in
the required direction. See Fig. 12.
2.Repeat step 1 in successive cam slots until the
cam is in the required position.
Use the following procedure to obtain the desired auxiliary
switch settings:
1. Remove the top cover from the motor to gain access to
the motor terminals and auxiliary cams.
2. Disconnect the controller from the motor.
3. Drive the motor to the position where the auxiliary
equipment is to be switched as follows:
a. For Non-Spring Return models without a transformer,
connect 24 Vac to terminals 2 and 3 to drive motor
open (clockwise as viewed from the power end), or
to terminals 1 and 3 to drive motor closed
(counterclockwise).
b. For Non-Spring Return models with a transformer,
jumper across terminals R and 2 to drive motor
open (clockwise as viewed from the power end), or
across terminals R and 1 to drive motor closed
(counterclockwise).
c. For Spring Return models, connect a jumper across
terminals 2 and 4 to drive the motor open, or across
terminals 1 and 4 to drive the motor closed.
1/8 INCH
STRAIGHT-BLADE
SCREWDRIVER
SLOW RISE
PORTION
(APPROX.
10 DIFF.)
LEFT/OUTER
AUXILIARY
SWITCH
FAST RISE
PORTION
(APPROX.
1 DIFF.)
MOTOR
OPEN
MOVE SCREWDRIVER AT
TOP ONLY TO ADJUST CAM.
RIGHT/INNER
AUXILIARY
SWITCH
INNER
AUXILIARY
CAM
(BLUE)
FAST RISE
PORTION
(APPROX.
1 DIFF.)
SLOW RISE
PORTION
(APPROX.
OUTER
10 DIFF.)
AUXILIARY
CAM
(RED)
MOTOR
CLOSE
POWER
END
Fig. 12. Auxiliary switch adjustment.
SERIES 61 AND SERIES 62 MODUTROL IV™ MOTORS
4. Once motor reaches correct position, disconnect the
jumper.
5. For a switch differential of 1°, check continuity of auxiliary
switch contacts R-B and rotate the cam as follows:
a. If the contacts are open, rotate the cam clockwise
until the R-B contacts close.
b. If the contacts are closed, rotate the cam
counterclockwise until the R-B contacts open.
6. For a switch differential of 10°:
a. For Spring Return models, rotate the cam
approximately 180° so the slow-rise portion of the
cam actuates the switch. Then check continuity of
the auxiliary switch contacts R-B.
b. For Non-Spring Return models, check continuity of
the auxiliary switch contacts R-B.
7. Rotate the cam as follows:
a. If the contacts are open, rotate the cam
counterclockwise until the R-B contacts close.
b. If the contacts are closed, rotate the cam clockwise
until the R-B contacts open.
8. Check for the proper differential and switching of the
auxiliary equipment by driving the motor though the full
stroke in both directions.
9. Disconnect the jumper, reconnect the controller, and
replace the top cover on the motor.
NOTE: Changing the differential from 1° to 10° reverses the
switching action. For example, with a 10° differential,
switch contacts R-B make and R-W break on a
counterclockwise (closed) rotation. With a 1°
differential, switch contacts R-W make and R-B
break on a counterclockwise (closed) rotation.
NOTE: CAMS ARE OFFSET
VERTICALLY TO PROVIDE
BETTER VIEW OF BACK CAM.
LEFT/OUTER
AUXILIARY
POWER END
SWITCH
OF MOTOR
11
RIGHT/INNER
AUXILIARY SWITCH
INNER AUXILIARY
CAM (BLUE)
OUTER AUXILIARY
CAM (RED)
M17101
63-2188—4