Audi AUD-S owner manual Limit Assembly

OPERATION AND ADJUSTMENT INSTRUCTIONS 17

WARNING

TO AVOID RISK OF ENTRAPMENT AND POSSIBLE DAMAGE TO THE DOOR AND OPERATOR THE CLUTCH MUST BE ADJUSTED AND ANY ENTRAPMENT PRTOTECTION DEVICES CONNECTED BEFORE APPLYING POWER TO THE OPERATOR TO SET THE LIMITS.

SETTING THE LIMIT SWITCHES

1)With the cover open on the electrical enclosure, reference Figure 23 below. There are two (2) switches (A and B) mounted to the ‘V’ bracket (F). The switches are activated by the two limit nuts (C and E) on the threaded shaft which move laterally along the shaft as the operator opens and closes the door. When a limit nut nears the end of the shaft it activates a switch, that send a message back to the motor control board to stop the door. Follow either 2 or 2A below depending on how the door and trolley are orientated.

2)For original installation setting, the door (connected as normal to the operator trolley) should be positioned approximately 4 inches shy of the fully closed position. If this is the case, depress the Limit Nut Retention Plate (D) so it disengages from the slots in the limit nuts and move the Close Limit Nut (C) on the shaft until it engages the Close limit

remember to use the STOP button to stop the door at the Fully Open Position.

4)Depress the limit nut retaining plate (D) so it disengages from the slots in the limit nuts. Turn the OPEN limit nut (E) on the shaft until it engages the Open Limit Switch (A). You will need to listen for an audible click. Release the retaining bracket and be sure that it engages in slots of both limit nuts.

5)With all due care use the built-in three button station on the motor control board or the wall mounted three button station to lower the door to approximately 4 inches shy of the fully closed position and repeat Step #4 with the Close Limit nut (C) and the Close Limit switch (B). The actual Close Limit position is a timed function whereas the door continues to run for a certain period of time after the Close Limit switch is activated. This amount of time (Close Limit Delay) is factory set to 0.32 seconds and will provide reversing cutout of approximately 4 inches from the floor for a door traveling at 12 inches per seconds. If the door fails to reverse when an object at least four inches high is placed in its path (see Testing, page 19) it may be necessary to adjust the Close Limit Delay time, see procedure on page 15.

6)Move the door to the fully open position then the fully closed position and observe the stopping position. Reset the Limit Nut(s) per above instructions if desired.

7)A fine adjustment can be done (if necessary) by loosening the screws holding the Limit Switches to the V bracket and moving the switch within the slots on the bracket.

Limit Switch (B) (see Step 5 for an explanation of the Close limit function). You will need to listen A for an audible click. Move the

Open Limit Nut (E) to the center of the threaded shaft. Release the retaining bracket and be sure that it engages in slots of both limit nuts.

2A) If the door and operator trolley are at some other position other than fully closed, depress the Limit Nut Retention Plate (D) so it disengages from the slots in the limit nuts and move the BOTH the Limit nuts to the center of the threaded shaft. Release the

retaining bracket and be sure that it engages in slots of both limit nuts.

3) With all due care use the built-in three button station on the motor control board or the wall mounted three button station to raise the door to the fully open position. You will need to

E

D

C 113116

B

A - OPEN LIMIT SWITCH

B - CLOSE LIMIT SWITCH C - CLOSE LIMIT NUT

D - LIMIT NUT RETAINING PLATE E - OPEN LIMIT NUT

F - “V” BRACKET

Figure 22

Limit Assembly

F