Chamberlain Group The 8389 Overhead Door and Gate Operator User Manual 01 37718 indd

Chamberlain Group Inc, The Overhead Door and Gate Operator 01 37718 indd

User Manual_20160711_v1 - User Manual pt3 HCTDCU

RESET BUTTON

The reset button is located on the side of the control box and serves

several functions:

• Press the reset button to stop a moving gate/door during a normal

open/close cycle, like a stop button.

• Press the reset button once while the gate/door is in open position to

disable the Timer-to-Close. The gate/door will stay in the open

position. To restart the Timer-to-Close either press the reset button or

activate the gate/door with a programmed remote control.

• Press the reset button to shut off the alarm and reset the operator.

OPERATOR ALARM

If a contact sensor detects an obstruction twice consecutively the alarm

will sound (up to 5 minutes) and the operator will need to be reset. If a

command is given after the initial 5 minutes the operator will beep. The

operator alarm will beep 3 times with a command if the battery is low.

When the inherent force of the operator (RPM/current sensor) detects the

following (twice consecutively) the alarm will sound (up to 5 minutes)

and the operator will need to be reset:

A. The gate/door hits an obstruction.

B. The gate/door has a broken wheel(s) or damaged track.

C. The gate/door has broken springs or hardware.

D. Trolley is hitting the chassis or an unwanted object.

Remove any obstructions. Toggle the reset switch to shut off the alarm

and reset the operator. After the operator is reset, normal functions will

resume.

ADJUSTABLE OPEN SPEED

The HCTDCU provides a high speed open option to help flow in high

traffic areas. Select the open speed using the BIPART DELAY switch.

BIPART DELAY OFF (default) = 8 in./sec. open speed

BIPART DELAY ON (fast) = 11 in./sec. open speed

NOTE: After changing the open speed, the force will need to be reset to

account for the change of power used, see page 17.

REMOTE CONTROL

SINGLE BUTTON CONTROL (SBC) FUNCTIONALITY

Once the remote control has been programmed the operator will operate

as follows:

When gate/door is in the closed position, activation of the remote control

button will open the gate/door. During the open cycle another activation

of the remote control will stop the gate/door and the next activation of the

remote control will close the gate/door.

When the gate/door is in the open position, activation of the remote

control button will close the gate/door. If the remote control is activated

while the gate/door is closing, the gate/door will stop and the next

activation will open the gate/door.

OPERATION

Reset Button

MANUAL DISCONNECT

Insert key and turn to unlock position.

The trolley will automatically re-engage when power is restored and run command is given. When the cylinder lock is in the locked position, the release

ring will not disengage. If the cylinder lock is in the unlocked position, the release ring will always be accessible to disengage.

Lift the gate/door up until fully open.

Pull down the release ring.

STEP 1 STEP 2

STEP 3

OPERATION

To reduce the risk of SERIOUS INJURY or DEATH from a falling gate/door:

• If possible, use manual release to disengage trolley ONLY when gate/door is CLOSED. Weak or broken springs or unbalanced gate/door could

result in an open gate/door falling rapidly and/or unexpectedly.

• NEVER use emergency release unless gate/door is clear of persons and obstructions.

OUT

Interrupt

Loop

OUT

Exit

Loop

Shadow

Loop

OUT

Interrupt

Loop

OUT

Exit

Loop

Shadow

Loop

ACCESSORY WIRING

Com

Exit

Shadow

(control board)

Interrupt

EXTERNAL CONTROL DEVICES

EXIT (2 Terminals)

This input is a soft open command (maintained switch does not override

external safeties and does not reset alarm condition). Used for exit probe,

telephone entry, external exit loop detector, or any device that would

command the gate/door to open.

• Opens a closing gate/door and holds open an open gate/door, if

maintained, pauses Timer-to-Close at OPEN limit.

SHADOW (2 Terminals)

This input is used for external shadow loop detector when loop is

positioned under the swing of the gate/door.

• Holds open gate/door at open limit

• Only active when the gate/door is at the OPEN limit, disregarded at all

other times

• Pauses Timer-to-Close at OPEN limit

INTERRUPT (2 Terminals)

This input is used for photoelectric sensors and external interrupt loop

detector when loop is on the outside of the gate/door.

• Holds open gate/door at OPEN limit

• Stops and reverses a closing gate/door to OPEN limit

• Pauses Timer-to-Close at OPEN limit, activates quick close and

anti-tailgate features when enabled on the expansion board

EXTERNAL RESET BUTTON

The externally located reset button serves several functions:

• Press the reset button to stop a moving gate/door during a normal

open/close cycle, like a stop button.

• Press the reset button once while the gate/door is in open position to

disable the Timer-to-Close. The gate/door will stay in the open

position. To restart the Timer-to-Close either press the reset button or

activate the gate/door with a programmed remote control.

• Press the reset button to shut off the alarm and reset the operator.

WIRING

• STOP and COM: Stops a moving gate/door.

Hard stop (maintained switch overrides Open and Close commands

and resets alarm condition). Cancels/resets Timer-to-Close at OPEN

limit. Overrides Open and Close commands (within line-of-sight).

RESET

Com

(main control board)

Stop

ACCESSORY WIRING

MISCELLANEOUS WIRING

THREE BUTTON CONTROL STATION (4 Terminals)

• OPEN and COM: Opens a closed gate/door.

Hard open (maintained switch overrides external safeties and resets

alarm condition). If maintained, pauses Timer-to-Close at OPEN limit.

Opens a closing gate/door and holds open an open gate/door (within

line-of-sight).

• CLOSE and COM: Closes an open gate/door.

Hard close (maintained switch overrides external safeties and resets

alarm condition within line-of-sight)

• STOP and COM: Stops a moving gate/door.

Hard stop (maintained switch overrides Open and Close commands

and resets alarm condition). Cancels/resets Timer-to-Close at OPEN

limit. Overrides Open and Close commands (within line-of-sight).

FIRE DEPARTMENT OPEN INPUT (2 Terminals)

Acts as hard open.

Hard open (maintained switch overrides external safeties and resets alarm

condition). If maintained, pauses Timer-to-Close at OPEN limit.

Opens a closing gate/door and holds open an open gate/door (within line-

of-sight). Bypasses any pre-warning delay.

ACCESSORY POWER 24 VDC, MAX 500 MA (4 Terminals)

• SWITCHED: Switched ON when the gate/door is in motion. Turns off

after a 5 second delay when the gate/door stops. The power will

remain ON at the open limit when Timer-to-Close is enabled and when

the Timer-to-Close is counting down.

• UNSWITCHED: 24 Vdc voltage out to power accessories, always ON.

Com

Open

(Main control board)

Three Button Control Station

Fire Department

Com

Fire Dept

Acc Power +24 Vdc

Com (-)

(Main control board)

Accessory Power Unswitched

Accessory Power Switched

Acc Power +24 Vdc

Com (-)

Stop N.C.

EXPANSION BOARD

EXPANSION BOARD OVERVIEW

SBC

OPN

CLS

STP

COM

EYE

ONLY

EYE/

EDGE

EYE/

EDGE

COM

OPEN

TO MAIN

BOARD

POWER

1 2 3 4

5 6 7

To AVOID damaging the circuit board, relays or accessories, DO NOT connect more than 42 Vdc (32 Vac) to the AUX relay contact terminal blocks.

1 QUICK CLOSE Switch:

OFF: No change to the gate/door's normal operation.

ON: When CLOSE EYES/Interrupt loop is deactivated it causes an

opening or a stopped gate/door to close (ignores the Timer-to-Close).

2 AC FAIL Switch:

OPEN: Loss of AC power will cause the gate/door to open approximately

15 seconds after AC power fail and remain OPEN until AC power is

restored (enabling the Timer-to-Close).

BATT: With loss of AC power, gate/door will remain in present position

and operator is powered from batteries.

3 EXIT LOOP FAIL Switch:

When set to OPEN, if the EXIT plug-in loop detector (Model

LOOPDETLM) detects a fault, then the gate/door will open and remain

open until fault is cleared. When set to CLOSE, then plug-in EXIT loop

detector faults are ignored (EXIT loop is faulted and inoperative).

4 ANTI-TAIL Switch:

OFF: When CLOSE EYES/Interrupt loop is activated it causes a closing

gate/door to stop and reverse.

ON: When CLOSE EYES/Interrupt loop is activated it causes a clos-

ing gate/door to pause. Once the vehicle is clear the gate/door will

continue to close.

5 AUX RELAY Switches: Set the AUX RELAY switches as needed to

obtain the desired function as shown on the following page.

6 EYE/EDGE Switches: Set the EYE/EDGE switches as needed to obtain

the desired OPEN or CLOSE functionality.

7 1, 2, and 3 LEDs: LEDs indicating the status of the EYE/EDGE inputs.

Also used to check the firmware version of the expansion board:

1. Locate the 1, 2, and 3 LEDs on the expansion board.

2. Disconnect AC/DC power to the main control board for 15

seconds.

3. Connect power. The 1, 2, and 3 LEDs will flash in sequence until

the main control board firmware revision is displayed. When the

green POWER LED glows solid the LED 1 will flash the version

number, then stop, then the LED 2 will flash the revision number

(for example: For version 5.1 when the green POWER LED is solid

the LED 1 will flash 5 times, then stop, then the LED 2 will flash

once).

8 MAIN BOARD Input: Input Connection for the main board connector.

9 Input LEDs: LEDs indicating the status of the SBC, OPN, CLS, and STP

inputs.

10 Loop Detector Inputs: Inputs for the Plug-In Loop Detectors (Model

LOOPDETLM)

CYCLE COUNT

* First, note the current Aux Relay switch positions. To determine

the actual cycles that the gate/door operator has run (in thousands),

set all three Aux Relay switches to the ON setting for Aux Relay 1.

The Expansion Board’s 1, 2, and 3 LEDs will blink out the cycle

count, with 1 LED blinking 1000’s, 2 LED blinking 10,000’s, 3 LED

blinking 100,000’s, and simultaneously all three LED’s blink

1,000,000’s (e.g. 1 LED blinks 3 times, 2 LED blinks 6 times, and 3

LED blinks once. Cycle count is 163,000.). Cycle count displayed is

between 1,000 and 9,999,000 cycles. After servicing, set Aux Relay

switches back to their appropriate positions. Cycle count cannot be

reset or changed. If under 1,000 cycles the 1, 2, and 3 LEDs will turn

on for 10 seconds, then turn off.

NOTE: The expansion board will flash the cycle count 3 times then

all the LEDs will turn on solid for 10 seconds then turn off.

EXPANSION BOARD

AUX RELAY WIRING EXAMPLE

AUXILIARY RELAYS

AUX RELAY

SETTING SWITCH

SETTINGS AUX RELAY 1 AUX RELAY 2

123

Off (no feature

selected) OFF OFF OFF Relay always off. Use this Aux Relay setting to conserve battery power.

Open Limit Switch OFF OFF ON Energizes at open limit. Use with SAMS (Sequenced Access Management System, jointly with barrier gate).

Close Limit Switch OFF ON OFF Energizes when not at close limit. For an additional audible or visual display, connect an external light (low voltage).

Gate/door Motion OFF ON ON Energizes when motor is on (gate/door in motion). For an additional audible or visual display,

connect an external buzzer or light (low voltage).

Pre-Motion Delay ON OFF OFF Energizes 3 seconds before gate/door motion and remains

energized during gate/door motion. The onboard alarm will sound.

For an additional audible or visual display, connect an external

buzzer or light (low voltage).

Energizes 3 seconds before gate/door motion and remains

energized during gate/door motion. For an additional

audible or visual display, connect an external buzzer or

light (low voltage).

Power ON ON OFF Energizes when AC power or solar power is present. There is

approximately a 10-12 second delay before relay cutoff, after AC

shutdown.

Energizes when on battery power. There is approximately

a 10-12 second delay before relay cutoff, after AC

shutdown.

Tamper ON OFF ON Energizes if gate/door is manually tampered with by being pushed

off of close limit. For an additional audible or visual display,

connect an external buzzer or light (low voltage).

Energizes if gate/door is manually tampered with by being

pushed off of close limit. For an additional audible or visual

display, connect an external buzzer or light (low voltage).

Cycle Quantity

Feedback* ON ON ON The 1, 2, and 3 LEDs will blink out the cycle count (cycle count is

stored on the control board). See below. Red/green light functionality, see below.

AUX RELAY 1 AND 2

Normally Open (N.O.) and Normally Closed (N.C.) relay contacts to control external devices, for connection of Class 2, low voltage (42 Vdc [34 Vac] max

5 Amps) power sources only. Function of relay contact activation determined by switch settings.

Aux Relay

Class 2 Power Source

(42 Vdc [34 Vac],

5 A max)

Warning

Light

COM

N.C.

N.O.

SHADOW INTERUPT EXIT

SBC

OPN

CLS

STP

COM

EYE

ONLY

EYE/

EDGE

EYE/

EDGE

COM

OPEN

TO MAIN

BOARD

POWER

SHADOW

INTERRUPT

EXIT

AUX RELAY 1 AUX RELAY 2

UX Relay 2 N.C.

Com

AUX Relay 2 N.O.

AUX Relay 1 N.C.

Com

AUX Relay 1 N.O.

AUXILIARY RELAY WIRING

EXAMPLE

RED/GREEN LIGHT FUNCTIONALITY

Red light wired to AUX RELAY 1. Green light wired to AUX RELAY 2.

Gate/door STATE AUX RELAY 1 SWITCHES AUX RELAY 2 SWITCHES

1 OFF 2 OFF 3 OFF 1 ON 2 ON 3 ON

Closed Red light OFF* Green light OFF

Opening Red light ON/Flash Green light OFF

Open Red light OFF Green light ON

Closing Red light ON/Flash Green light OFF

Defined Mid Stop n/a n/a

Undefined Mid

Stop Red light ON Green light OFF

Timer more than 5

seconds Red light OFF Green light ON

Timer less than 5

seconds Red light ON/Flash Green light OFF

* For red light ON when gate/door is closed, set switch 1 on AUX RELAY 1

to ON

EXPANSION BOARD

WIRING ACCESSORIES TO THE EXPANSION BOARD

AEntrapment Protection Device Inputs

(4 terminals total), Open or Close

Direction based on switch setting next

to inputs

EYES ONLY Input: Open or Close Direction Photoelectric Sensors, Close: reverses fully, Open: stops

gate/door

EYES/EDGE Input(s): Open or Close Direction Photoelectric Sensors, Infra-red detector wired or Edge

Sensor, Close: reverses fully, Open: stops gate/door

BSingle Button Control, SBC (2

terminals) Gate/door command sequence - Open, Stop, Close, Stop, ...

Soft Open ,Soft Close, Soft Stop (maintained switch does not override external safeties and does not

reset alarm condition)

COpen Input (& common) (3-Button

Control Station, 4 terminals total) Open command - opens a closed gate/door.

Soft open (maintained switch does not override external safeties and does not reset alarm condition)

If maintained, pauses Timer-to-Close at OPEN limit.

Opens a closing gate/door and holds open an open gate/door.

DClose Input (& common) (3-Button

Control Station, 4 terminals total) Close command - closes an open gate/door.

Soft close (maintained switch does not override external safeties and does not reset alarm condition)

EStop Input (& common)

(3-PB station, 4 terminals total) Stop command - stops a moving gate/door.

Hard stop (maintained switch overrides Open and Close commands and resets alarm condition)

If maintained, pauses Timer-to-Close at OPEN limit.

Overrides an Open or Close command.

FExit Loop Input (2 terminals) Loop wire connection for plug-in loop detector when loop is inside secured area near gate/door.

Open command - opens a closed gate/door.

Soft open (maintained switch does not override external safeties and does not reset alarm condition)

If maintained, pauses Timer-to-Close at OPEN limit.

Opens a closing gate/door and holds open an open gate/door.

GShadow Loop Input (2 terminals) Loop wire connection for plug-in loop detector when loop is positioned under the gate/door.

- Holds open gate/door at open limit

- Disregarded during gate/door motion

- Pauses Timer-to-Close at Open Limit

HInterrupt Loop Input (2 terminals) Loop wire connection for plug-in loop detector when loop is along the side of the gate/door.

- Holds open gate/door at open limit

- Stops and reverses a closing gate/door

- Pauses Timer-to-Close at Open Limit

- Activates quick close and anti-tail features if enabled

Refer to the chart below and the corresponding image for a description of the expansion board inputs.

SBC

OPN

CLS

STP

COM

EYE

ONLY

EYE/

EDGE

EYE/

EDGE

COM

OPEN

TO MAIN

BOARD

POWER

Photoelectric Sensor

Photoelectric

Sensor or Edge

Photoelectric

Sensor or Edge

Exit Loop

Interrupt Loop

Shadow Loop

N.C.

MAINTENANCE

To reduce the risk of SEVERE INJURY or DEATH:

• READ AND FOLLOW ALL INSTRUCTIONS.

• ALL maintenance MUST be performed by a LiftMaster professional.

• ANY maintenance to the operator or in the area near the operator

MUST NOT be performed until disconnecting the electrical power

(AC or solar and battery) and locking-out the power via the operator

power switch. Upon completion of maintenance the area MUST be

cleared and secured, at that time the unit may be returned to service.

• NEVER let children operate or play with gate/door controls. Keep the

remote control away from children.

• ALWAYS keep people and objects away from the gate/door. NO ONE

SHOULD CROSS THE PATH OF THE MOVING GATE/DOOR.

• The entrance is for vehicles ONLY. Pedestrians MUST use separate

entrance.

• Test the gate/door operator monthly. The gate/door MUST reverse on

contact with a rigid object or reverse when an object activates the

non-contact sensors. After adjusting the force or the limit of travel,

retest the gate/door operator. Failure to adjust and retest the gate/

door operator properly can increase the risk of INJURY or DEATH.

• Use the manual disconnect release ONLY when the gate/door is not

moving.

• KEEP GATES/DOORS PROPERLY MAINTAINED. Read the owner’s

manual. Have a qualified service person make repairs to gate/door

hardware.

• Activate gate/door ONLY when it can be seen clearly, is properly

adjusted and there are no obstructions to gate/door travel.

• To reduce the risk of FIRE or INJURY to persons use ONLY

LiftMaster part 29-NP712 for replacement batteries.

• SAVE THESE INSTRUCTIONS.

• ALWAYS wear protective gloves and eye protection when changing the battery or working around the battery compartment.

IMPORTANT SAFETY INFORMATION

MAINTENANCE CHART

Disconnect all power (AC, solar, battery) to the operator before servicing. The operator's AC Power switch ONLY turns off AC power to the control

board and DOES NOT turn off battery power. ALWAYS disconnect the batteries to service the operator.

BATTERIES

Batteries will degrade over time depending on temperature and usage. The operator alarm will beep 3 times with a command if the battery is low.

Batteries do not perform well in extremely cold temperatures. For best performance, the batteries should be replaced every 3 years. Use only

LiftMaster part 29-NP712 for replacement batteries. The operator comes with two 7AH batteries. The batteries contain lead and need to be disposed of

properly.

DESCRIPTION TASK CHECK AT LEAST ONCE EVERY

MONTH 6 MONTHS 3 YEARS

Entrapment Protection Devices Check and test for proper operation X

Warning Signs Make sure they are present X

Manual Disconnect Check and test for proper operation X

Gate/door Make sure the gate/door operates smoothly without the operator. X

Gate/door Track Make sure the gate/door track runs smoothly. X

Accessories Check all for proper operation X

Electrical Inspect all wire connections X

Operator Inspect for wear or damage X

Chain For chain maintenance, adjust the turnbuckle. X

Batteries Replace X

TROUBLESHOOTING

DIAGNOSTICS DISPLAY OPEN, CLOSE, & STOP BUTTONS

To protect against fire and electrocution:

• DISCONNECT power (AC or solar and battery) BEFORE

installing or servicing operator.

For continued protection against fire:

• Replace ONLY with fuse of same type and rating.

Press and

hold the

STOP

button...

...then press

and hold the

CLOSE button...

TO VIEW THE CODES

The codes will show on the diagnostic display.

TO SCROLL THROUGH THE SAVED CODES

Press the OPEN button

to cycle to the most

recent code ("01"). Press the CLOSE button

to cycle to the oldest

code (up to "20").

A SECOND

LATER....

The operator will only keep track of up to 20 codes, then will start saving

over the oldest codes as new codes occur.

The operator will show the code sequence number followed by the code

number:

NOTE: When cycling or disconnecting power (ac/dc) to the control board, it is recommended that you unplug the J15 plug.

...then press

and hold the

OPEN button

until "Er"

shows on

the display.

CODE NUMBER

The second number shown after the

code sequence number is the code

itself (31-99, example" "31"). Refer to

the chart on the following page for an

explanation of each code.

CODE SEQUENCE NUMBER

The first number shown is the most

recent code (example: "01"). The

display will show the sequence of

codes that occurred starting with "01"

and going up to code "20".

TO EXIT

Press and release the STOP button to exit. The display will also time out

after two minutes of inactivity.

TO RESET THE CODE HISTORY

1. Press and hold the STOP button for six seconds. The display will

show "Er" then "CL" alternately for six seconds.

2. Release the STOP button. The code history has now been reset and

the display will show "- -" until a new code occurs.

3. Press and release the STOP button to exit.

DIAGNOSTIC CODES

TROUBLESHOOTING

DIAGNOSTIC CODES

Some codes are saved in the code history and some are not. If a code is not saved it will briefly appear on the display as it occurs, then disappear.

Code Meaning Solution Saved

31 Main control board has experienced an

internal failure. Disconnect all power, wait 15 seconds, then reconnect power (reboot). If issue

continues, replace main control board. NO

34 Absolute Position Encoder Error, not

getting position information from encoder Check APE assembly and wiring connections. Replace the APE assembly if

necessary. YES

35 Max-Run-Time Exceeded Error Check for an obstruction, then reprogram the limits. YES

36 Product ID Error Was the control board just replaced? If so, erase limits, enter limit setup mode

and set limits. If not, disconnect all power, wait 15 seconds, then reconnect

power before changing product ID harness. YES

37 Product ID Failure Unplug product ID harness then plug back in. Disconnect all power, wait 15

seconds, then reconnect power before replacing product ID harness. YES

38 Hard Stop Limit Limit may be set too tightly against a non-resilient hard stop (re-adjust limit).

Operator may be at end of travel (re-adjust mounting). NO

40 Battery overvoltage Too much voltage on the battery. Check harness. Make sure there is NOT a 24V

battery on a 12V system. YES

41 Battery overcurrent Possible short of the battery charge harness. Check harness. Make sure you do

NOT have a 12V battery on a 24V system. YES

42 No battery at boot up Check battery connections and installation. Replace batteries if depleted to less

than 20V on a 24V system or less than 10V on a 12V system. Make sure there is

NOT a single 12V battery on a 24V system. YES

43 Exit Loop Error Failure or missing loop (SHORT or OPEN - LiftMaster Plug-in Loop Detector

only) Check loop wiring throughout connection. May be a short in the loop, or an

open connection in the loop. YES44 Shadow Loop Error

45 Interrupt Loop Error

46 Wireless edge battery low Replace batteries in wireless edge. YES

50 Door out of balance detected Check counterbalance spring condition and setting. YES

53 Brownout occurred AC/DC board supply dipped below allowable level. Review power supply and

wiring. If rebooting, ensure enough time for discharge of power to force a fresh

boot. YES

LiftMaster System Installed System Informational External Entrapment

Protection

Inherent Entrapment

Protection

TROUBLESHOOTING

DIAGNOSTIC CODES

Some codes are saved in the code history and some are not. If a code is not saved it will briefly appear on the display as it occurs, then disappear.

Code Meaning Solution Saved

60 Minimum number of monitored entrapment

protection devices (one) not installed.

Review monitored entrapment protection device connections. A

minimum of one monitored entrapment protection device protecting

the close direction must be installed to allow operation. NO

61 CLOSE EYE/INTERRUPT held more than 3 minutes Check wired input on main control board; check for alignment or

obstruction. YES62 CLOSE EDGE held more than 3 minutes

63 OPEN EYE/EDGE held more than 3 minutes

64 CLOSE EYE/INTERRUPT held more than 3 minutes Check wired input on expansion board; check for alignment or

obstruction. YES65 CLOSE EYE/EDGE held more than 3 minutes

66 OPEN EYE/EDGE held more than 3 minutes

67 Wireless edge triggered more than 3 minutes Check wired input for wiring issue or obstruction. YES

68 Wireless edge loss of monitoring Check wireless edge inputs. YES

69 Wireless edge triggered IF an obstruction occurred, no action required. If an obstruction did

NOT occur, check inputs and wiring. NO

70 CLOSE EYE/INTERRUPT triggered, causing

reversal, preventing close, or resetting TTC

IF an obstruction occurred, no action required. If an obstruction did

NOT occur, check alignment, inputs, and wiring on main control board. NO

71 CLOSE EDGE triggered, causing reversal,

preventing close, or canceling TTC

72 OPEN EYE/EDGE triggered, causing reversal or

preventing opening

73 CLOSE EYE/INTERRUPT triggered, causing

reversal, preventing close, or resetting TTC

IF an obstruction occurred, no action required. If an obstruction did

NOT occur, check alignment, inputs, and wiring on expansion board. NO74 CLOSE EYE/EDGE triggered, causing reversal and

preventing close or canceling TTC

75 OPEN EYE/EDGE triggered, causing reversal or

preventing opening

82 Close input (EYE/EDGE) communication fault

(expansion board) Check the connections between the main board and the expansion

board. YES

83 Open input (EYE/EDGE) communication fault

(expansion board)

91 Force Reversal Check for obstruction. If no obstruction, check that the mechanical

assembly is engaged and free to move. See section on Limit and Force

Adjustment, and Obstruction Test. YES

93 RPM / STALL Reversal Check for obstruction. If no obstruction, check the operator wiring and

that the mechanical assembly is engaged and free to move. Replace

APE assembly. YES

99 Normal Operation No action required YES

LiftMaster System Installed System Informational External Entrapment

Protection

Inherent Entrapment

Protection

TROUBLESHOOTING

CONTROL BOARD LEDS

STATUS LEDS INPUT LEDS

INPUT LEDS

OPEN, CLOSE,

& STOP INPUT OFF Input inactive

ON Input active