Linear VS-GSWG manual Open and Close Limit Adjustment, Limit Nuts Rough Adjustment

Operator Setup (cont.)

Open and Close Limit Adjustment

The limit nuts are not preset at the factory and must be adjusted for the gate in each installation.The limit switches are activated by two threaded nylon rotary limit nuts which are attached to a threaded limit shaft driven by a chain and sprockets from the main drive shaft. REMOVE THE CARDBOARD FILLER

BEFORE ADJUSTING THE LIMIT NUTS.

The Controller is factory setup for right-hand installations. The OPEN limit switches are the ones closer to the bottom of the operator. In left-hand installations, the CLOSE limit switches are the ones closer to the bottom of the operator (see Figures 7 & 8).

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.

RIGHT-HAND

INSTALLATION	CLOSE LIMIT NUT
CLOSE LIMIT	CLOSE LIMIT
SWITCH (LSC-2)	SWITCH (LSC-1)

OPEN LIMIT			OPEN LIMIT
SWITCH (LSO-2)			SWITCH (LSO-1)
LSC-2 & LSO-2	LIMIT	OPEN LIMIT NUT	LSC-1 & LSO-1
	SHAFT
CONTROL MOTOR		BOTTOM OF	CONTROL GATE
SPEED RAMP UP & DOWN		OPERATOR	FULL OPEN AND CLOSE

Figure 7. Limit Box Assembly (Right-hand Installation)

Limit Nuts Rough Adjustment

Before running the operator, set the limit nuts as follows:

1.With the gate connected to the gate operator in a mid-travel position, turn the power disconnect switch OFF.

2.To adjust the limit nuts, press down on the detent plate and rotate the limit nut along the threaded shaft (see Figure 9).

3.Adjust the OPEN limit nut until it is about 1/2” from activating the LSO-2 OPEN limit switch.

4.Adjust the CLOSE limit nut until it is about 1/2” from activating the LSC-2 CLOSE limit switch.

Limit Nuts Fine Adjustment

After fi nishing the rough limit nut adjustments, run the operator to set the fine limit adjustment.

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 nuts again if necessary. Fine levels of adjustment can be made by adjusting a few teeth on the nut at a time. 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).

Setting Speeds using LSO-2 & LSC-2

Limit switches LSO-2 and LSC-2 control when the operator accelerates to maximum speed and decelerates to minimum speed. It is recommended that LSO-2 and LSC-2 are adjusted fi rst so the gate slows to near stop before hitting LSO-1 or LSC-1 as these will apply the brake upon activation.

Adjust LSO-2 and LSC-2 by slightly loosening the two screws which hold them in place and sliding toward or away from the center of the limit box. Care must be taken not to adjust too close to the center as the limit nut may travel past the switch and start accelerating at the end of the cycle.

LEFT-HAND
INSTALLATION	OPEN LIMIT NUT
OPEN LIMIT	OPEN LIMIT
SWITCH (LSO-2)	SWITCH (LSO-1)

CLOSE LIMIT			CLOSE LIMIT
SWITCH (LSC-2)			SWITCH (LSC-1)
LSO-2 & LSC-2	LIMIT	CLOSE LIMIT NUT	LSO-1 & LSC-1
	SHAFT
CONTROL MOTOR		BOTTOM OF	CONTROL GATE
SPEED RAMP UP & DOWN		OPERATOR	FULL OPEN AND CLOSE

Figure 8. Limit Box Assembly (Left-hand Installation)

PRESS DETENT

PLATE DOWN

ROTATE

LIMIT NUT

Figure 9. Setting the Limits

VS-GSWG Swing Gate Operator Installation Guide - 6 - P1250 Revision X6 7-8-2011