LiftMaster SL575 Heavy-Duty Commercial Slide Gate Operator - Manual (Page 28)

28
FAULT POSSIBLE CAUSE FIX
OPERATOR RUNS IN
WRONG DIRECTION
OPERATOR RUNS BUT
THEN STOPS AND
REVERSES DIRECTION
MOTOR RUNS BUT GATE
DOES NOT MOVE;
OPERATOR STOPS AND
ALARMS
OPERATOR OPENS
IMMEDIATELY UPON
POWER UP AND DOES NOT
CLOSE
OPERATOR HAS TROUBLE
LEARNING THE MOTOR
PROGRAMMING CHANGES
DO NOT EFFECT THE GATE
GATE EDGE PAUSES GATE
WHEN STRUCK DURING
OPENING
GATE DOES NOT ACTIVATE
TIMER TO CLOSE AFTER
THE CLOSE PHOTO EYE IS
BROKEN
RADIO CONTROLS WILL NOT
CLOSE THE GATE FROM THE
OPEN LIMIT
1) Operator’s main power is out of phase
(three phases only)
2) Operation directional switch
➤ Turn off the unit’s main power at the breaker and swap any two power leads
at the operator’s main power switch. Apply power and retest the operator. See
important note on page 12.
➤ Check right/left operation switch. See DIP switch S1 programming setting.
1) Entrapment (force pot) incorrectly set
2) Gate is binding or not running smoothly
3) Clutch is not adjusted properly
4) Brake is not functioning properly
5) Observe red LEDs D29 and D31
6) RPM (Hall Effect) Sensor
is not aligned
➤ This pot must be set so that the gate will run smoothly normally and reverse
when encountering an obstruction.
➤ Disengage the manual release and roll gate open and close by hand at normal
operating speed. Make sure that the gate runs smoothly and does not bind. If
the gate is hard to move or binds, repair the gate.
➤ Adjust the clutch so that the operator can move the gate throughout its travel
without slipping but will slip when the gate hits an obstruction.
➤ Make sure that the brake operates correctly. The brake should disengage when
the contactor activates and engage when the contactor releases.
➤ Both LEDs will indicate the activation of entrapment protection devices on
terminals TB1-9 and TB1-10 on the control board. Remove the devices and
retest. If the operator now runs without fault, check those accessories as well
as their wiring.
➤ Make sure that the sensor is adjusted so that it is centered over the limit
shaft’s magnet and is 10-15 thousandths of and inch (business card
thickness) from the magnet.
➤ Replace the sensor if it is adjusted correctly but continues to fail.
1) Operator’s manual release is not aligned
2) Clutch is not adjusted properly
3) V-Belt Slippage
➤ Make sure that the unit’s manual release is not engaged. The unit’s manual
release, when engaged, will set off the entrapment if the gate is given a
command to move.
➤ Adjust the clutch so that the operator can move the gate throughout its travel
without slipping but will slip when the gate hits an obstruction.
➤ Check belt for excessive wear. Belt can be adjusted by loosening the
(4) mounting bolts securing motor to the frame and sliding motor until belt
is taut.
1) Active or malfunctioning accessory check
the red input status LEDs, D11-D13
➤ If any red LEDs are on, check the corresponding input. An installed accessory
may be wired incorrectly or malfunctioning. Remove the accessory and test
the operator.
➤ If the soft open or interrupt (safety) loop LED is on, make sure factory plug-in
loop detectors are working properly and appropriate loops are installed on the
loop input terminals.
1) Operator’s manual release is engaged ➤ Make sure the manual release is not engaged. The operator’s manual release,
when engaged, will not allow the entrapment sensor to provide feedback to
the control board when the operator is moving.
1) Check the save switch on switch S1-1 ➤ If the switch S1-1 is in the on position, any subsequent programming
changes will not affect the gate. To make programming changes, switch S1-1
off, make desired changes, and then switch S1-1 on.
1) Open obstruction input is programmed
incorrectly
➤ The open obstruction input has been programmed to function with photo
eyes, not gate edges. Refer to page 15 and reprogram the obstruction inputs
for correct operation.
1) Close obstruction input is programmed
incorrectly
1) Radio terminals R1-4 are factory configured
for commercial radio function
➤ The close obstruction input has been programmed to function with gate
edges, not photo eyes. Refer to page 15 and reprogram the obstruction inputs
to match the accessories that are installed on operator.
➤ Configure terminals R1-4 for residential radio for residential radio function by
performing the following modifications:
1. Locate and disconnect the end of the wire running to terminal 6 (TB6)
from R4.
2. Connect the end of the wire removed from terminal 6 (TB6) to terminal 1
(TB1). Refer to page 19.
T R O U B L E S H O O T I N G