Chamberlain HS670 - Manual (Page 26)

26
FAULT POSSIBLE CAUSE FIX
MASTER OR SECOND
OPERATOR IS NOT
FUNCTIONING PROPERLY
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) Failure to cycle power after setup
2) Communication wiring may be
damaged or improperly wired for dual
gate operation
3) Master or second unit is not
programmed correctly
T R O U B L E S H O O T I N G
➤ The power to each unit must be cycled in order to initiate proper
master/second communication if the operators were previously in
stand-alone mode.
➤ Make sure that the communication wire that is used is twisted pair
and not run in the same conduit with any power wiring. Failure to do
so will result in interference across the master/second
communication line.
➤ Review program settings on page 18 and check both the master and
second for proper programming.
1) Entrapment (force pot) incorrectly set
2) Gate is binding or not running
smoothly
3) Rail slippage
4) Brake is not functioning properly
5) Observe red LEDs D29 and D31
6) RPM Sensor (Hall Effect) is not
aligned/adjusted correctly
➤ 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.
➤ Observe the drive wheels as they move the gate. If the wheels slip on
the rail, tighten the compression springs until the rail no longer slips.
➤ 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 GL 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 engaged.
2) Operator’s main power is out of phase
(three phase only).
➤ Make sure that the unit’s manual release is not engaged. The unit’s
manual release, when disengaged, will set off the entrapment sensor
if the gate is given a command to move. See page 11.
➤ 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 13.
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 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 the unit’s manual release is not engaged. The unit’s
manual release, when engaged, will not allow the entrapment sensor
to provide feedback to the GL 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 18 and reprogram the
obstruction inputs for correct operation.
1) Close obstruction input is
programmed incorrectly
➤ The close obstruction input has been programmed to function with
gate edges, not photo eyes. Refer to page 18 and reprogram the
obstruction inputs to match the accessories that are installed on
operator.
1) Radio terminals R1-4 are factory
configured for single button radio
function
Configure terminals R1-4 for single button radio function by performing
the following modification:
➤ Locate and disconnect the end of the wire running to terminal J1-6
from R4.
➤ Connect the end of the wire removed from terminal J1-6 to terminal
J1-1. Refer to pages 30 and 31.