Table of Contents
Advertisement
Operator Setup (Continued)
Limit Cam Rough Adjustment
The limit cams are not preset at the factory and must be adjusted
for each installation. The limit switches are activated by two rotating
limit cams attached to the drive shaft (see Figure 10). The Controller
is factory set for right hand installations. The top cam is for OPEN and
the bottom cam is for CLOSE. The cams flip their definition in left hand
installations (see left-right hand programming on Page 12).
1. With the gate connected to the gate operator in a mid-travel position,
the power disconnect switch turned OFF, and the torque limiter
set loose enough to slip freely, manually move the gate by hand to
its fully open position.
2. Once the gate is in the fully open position, set the OPEN limit cam
so that it has just triggered its switch (see Figure 10).
3. Manually move the gate to its fully closed position, set the CLOSE
limit cam so that it has just triggered its switch (see Figure 10).
Torque Limiter Adjustment
✓ NOTE: The open and close current sensing may need to be
adjusted before performing the following two steps. See Page
13.
This operator may be supplied with an optional torque limiter. Before
adjusting the torque limiter, make sure the gate is in good working
condition. With the gate disconnected from the gate arm, one person
should be able to move the gate by hand. Be certain the gate moves
freely and without binding throughout its travel.
Torque limiters are set light at the factory. They must be adjusted during
installation, preferably after limit cams have been manually set. With the
gate arm and gate attached, adjust the torque limiter tight enough to
keep it from slipping during normal operation. The inherent entrapment
protection (current sensing) feature must activate prior to any slipping of
the torque limiter. See page 13 for current sense setting.
To adjust the torque limiter in models SWR and SWD:
1. Loosen the set screw on the torque limiter adjustment nut.
2. Cycle the gate open and closed while observing the torque limiter
action. TURN THE OPERATOR POWER DISCONNECT SWITCH OFF
BEFORE MAKING ANY ADJUSTMENTS.
To increase the torque, turn the adjustment nut clockwise one flat,
or 1/6 turn, at a time until desired output is obtained.
To reduce the torque, turn the adjustment nut counterclockwise
one flat, or 1/6 turn, at a time until desired output is obtained.
3. When finished, tighten the set screw on the torque limiter adjustment
nut.
Limit Cam Fine Adjustment
After finishing the rough limit cam adjustments and torque limiter
adjustment (if optional torque limiter is installed), reposition the gate to
approximately the center of travel.
1. Turn the power disconnect switch ON.
2. Stand clear of any moving parts and press the OPEN button.
3. After the gate opens, press the CLOSE button.
4. Observe the gate in both directions as it runs through each complete
cycle. Adjust the open or close limit cams again if necessary. If the
gate stops during travel, you may need to adjust the Open or Close
Current Setting or the Maximum Run Timer (see Pages 13-14).
SWR • SWC • SWD Swing Gate Operator Installation Guide
LIMIT
SWITCHES (2)
LIMIT
CAMS (2)
Figure 10. Setting Limit Cams
LOOSEN THE SET SCREW
ON THE ADJUSTMENT NUT
TO INCREASE TORQUE
TURN ADJUSTMENT NUT
CLOCKWISE ONE FLAT
THEN RE-TEST
TO DECREASE TORQUE
TURN ADJUSTMENT NUT
COUNTERCLOCKWISE
ONE FLAT THEN RE-TEST
TIGHTEN SET SCREW
WHEN FINISHED
Figure 11. Adjusting the Torque Limiter
If the operator is installed in a left-hand installation. Set the
Controller to left-hand operation BEFORE running the operator for
the fine setting of the limit cams. Failure to do so will result in
over-shooting the limit switches, and may cause damage to the
operator and/or gate. Refer to programming on Page 12.
- 7 -
RIGHT-HAND INSTALLATION
TOP CAM - OPEN LIMIT
BOTTOM CAM - CLOSE LIMIT
LEFT-HAND INSTALLATION
TOP CAM - CLOSE LIMIT
BOTTOM CAM - OPEN LIMIT
MORE
CAUTION
ADJUSTMENT
NUT
LESS
227965 X28
Advertisement
Table of Contents
