S&C Mark VI Instructions For Installation Manual page 36

WIRING AND ADJUSTING THE SWITCH OPERATOR
NOTICE
Terminal designations may differ in special
wiring diagrams. In such cases, refer to the
specifi c wiring diagram for correct terminal
designations.
d. If the direction of rotation of the travel-limit
discs noted in (c) above is opposite to the
temporary direction mark, a reversal of the
motor direction will be necessary. Remove
the motor-circuit fuseholder to avoid acci-
dentally energizing the control circuit.
Interchange the "-S1" and "-S2" motor leads
connected to Terminals 4 and 5. Reversal for
the motor direction reverses only the direc-
tion of the rotation of the output shaft and
travel-limit discs. The identity of the opening-
stroke and closing-stroke travel-limit discs
(which will be adjusted later) is unaffected.
e. In the event that the direction of rotation
of the travel-limit discs noted in (c) above
is opposite to the direction displayed in the
cutaway section on the outer ring of
the closing-stroke travel-limit disc, remove
the positioning screws on the outer ring
of the closing-stroke travel-limit disc. See
Figure 54b. Rotate the outer ring until the
desired direction is displayed in the cutaway
section. Replace the positioning screws.
f. Reinsert the motor-circuit fuseholder and
electrically operate the switch operator to
the open position.
g. If the direction of output-shaft rotation to
open the disconnect is opposite to that dis-
played in the cutaway section on the outer
ring of the opening-stroke travel-limit disc,
change the direction displayed as indicated
in (e) above. See Figure 54a.
Step 56
The travel-limit switch that governs the extent
of output-shaft rotation in the opening and
closing directions includes six contacts that are
operated by cam-actuated rollers. Positioning
of the cams to properly engage the rollers is
facilitated by the travel-limit discs (upper one is
the opening-stroke travel-limit disc; lower one
is the closing-stroke travel-limit disc).
712-502
Positioning screws
Cutaway section
(on outer ring)
Figure 54a. Make sure the cutaway section indicates the correct direction
of rotation. (Opening-stroke disc shown).
Closing-stroke travel-limit disc
(in raised position)
Cutaway section
(on outer ring)
Figure 54b. Make sure the cutaway section indicates the correct direction
of rotation. (Closing-stroke disc shown).
36
Opening-stroke travel-limit disc
(in raised position)
Arrow (on cutaway section)
Arrow (on cutaway section)