Linear SWR Limit Cam Rough Adjustment, Torque Limiter Adjustment, Limit Cam Fine Adjustment, Cams

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 fl ip their defi nition 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 pages 13-14 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 fl at, or 1/6 turn, at a time until desired output is obtained.

To reduce the torque, turn the adjustment nut counterclockwise one fl at, 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 fi nishing 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).

LIMIT

SWITCHES (2)

RIGHT-HAND INSTALLATION

TOP CAM - OPEN LIMIT

BOTTOM CAM - CLOSE LIMIT

LEFT-HAND INSTALLATION

TOP CAM - CLOSE LIMIT BOTTOM CAM - OPEN LIMIT

LIMIT

CAMS (2)

Figure 10. Setting Limit Cams

LOOSEN THE SET SCREW	ADJUSTMENT
	NUT
ON THE ADJUSTMENT NUT

TO INCREASE TORQUE

TURN ADJUSTMENT NUT

CLOCKWISE ONE FLAT

THEN RE-TEST

MORELESS

TO DECREASE TORQUE

TURN ADJUSTMENT NUT

COUNTERCLOCKWISE

ONE FLAT THEN RE-TEST

TIGHTEN SET SCREW

WHEN FINISHED

Figure 11. Adjusting the Torque Limiter

CAUTION

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.

SWR • SWC • SWD Swing Gate Operator Installation Guide - 7 - 227965 Revision X13 3-28-2008