LiftMaster HCTDCU HCTDCU Installation Manual - Page 24

Control Board Overview, Reversal Force Dial

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OPERATION CONTROL BOARD OVERVIEW 1 SET OPEN Button: The SET OPEN button sets the OPEN limit. See Adjust Limits section. 2 SET CLOSE Button: The SET CLOSE button sets the CLOSE limit. See Adjust Limits section. 3 MOVE GATE Buttons: The MOVE GATE buttons will either open or close the gate/door when the operator is in Limit setting mode. See Adjust Limits section. 4 BATT FAIL: • When AC power is OFF and battery voltage is critically low the gate/door will latch at a limit until AC power is restored or batteries voltage increases. • Option select switch set to OPEN forces gate/door to automatically open and then latch at the OPEN limit until AC power is restored or battery voltage increases. • Option select switch set to CLOSE forces gate/door to latch at CLOSE limit if at CLOSE limit or on next CLOSE command until AC power restored or battery voltage increases. • Constant pressure on a hard command input overrides to open or close the gate/door. • Critically low battery is less than 23 V. 5 BIPART DELAY Switch: The BIPART DELAY switch is used to select the opening speed. See page 25. 6 LEARN Button: The LEARN button is for programming remote controls and the network. 7 TIMER-TO-CLOSE dial: The TIMER-TO-CLOSE (TTC) dial can be set to automatically close the gate/door after a specified time period. The TTC is factory set to OFF. If the TTC is set to the OFF position, then the gate/door will remain open until the operator receives another command from a control. Rotate the TIMER-TO-CLOSE dial to the desired setting. The range is 0 to 180 seconds, 0 seconds is OFF. NOTE: Any radio command, single button control, or CLOSE command on the control board prior to the TTC expiring will close the gate/door. The TTC is reset by any signals from the open controls, loops, close edges, and close photoelectric sensors (IR's). 8 REVERSAL FORCE dial: The REVERSAL FORCE dial adjusts the force. See Force Adjustment section. 9 TEST BUTTONS: The TEST BUTTONS will operate the gate/door (OPEN, STOP and CLOSE). 10 STATUS LEDs: The STATUS LEDs indicate the status of the operator. See Status LED Chart in the Troubleshooting section. 11 DIAGNOSTIC CODE DISPLAY: The diagnostic code display will show the operator type, firmware version, and diagnostic codes. The operator type will display as "HC" followed by a "24" which indicates the operator type as HCTDCU. The firmware version will show after the operator type, example "1.2". 12 BACKDRIVE Switch: ALWAYS set to SECURE to enable motor braking. To manually move the gate/door see page 26. 1 2 45 6 9 7 8 3 11 10 12 24

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24
OPERATION
CONTROL BOARD OVERVIEW
1
SET OPEN Button:
The SET OPEN button sets the OPEN limit. See Adjust Limits section.
2
SET CLOSE Button:
The SET CLOSE button sets the CLOSE limit. See Adjust Limits section.
3
MOVE GATE Buttons:
The MOVE GATE buttons will either open or close the gate/door when the operator is in Limit setting mode. See Adjust Limits
section.
4
BATT FAIL:
•
When AC power is OFF and battery voltage is critically low the gate/door will latch at a limit until AC power is restored or batteries voltage increases.
•
Option select switch set to OPEN forces gate/door to automatically open and then latch at the OPEN limit until AC power is restored or battery
voltage increases.
•
Option select switch set to CLOSE forces gate/door to latch at CLOSE limit if at CLOSE limit or on next CLOSE command until AC power restored or
battery voltage increases.
• Constant pressure on a hard command input overrides to open or close the gate/door.
• Critically low battery is less than 23 V.
5
BIPART DELAY Switch:
The BIPART DELAY switch is used to select the opening speed. See page 25.
6
LEARN Button:
The LEARN button is for programming remote controls and the network.
7
TIMER-TO-CLOSE dial:
The TIMER-TO-CLOSE (TTC) dial can be set to automatically close the gate/door after a specified time period. The TTC is fac-
tory set to OFF. If the TTC is set to the OFF position, then the gate/door will remain open until the operator receives another command from a control.
Rotate the TIMER-TO-CLOSE dial to the desired setting. The range is 0 to 180 seconds, 0 seconds is OFF.
NOTE:
Any radio command, single button control, or CLOSE command on the control board prior to the TTC expiring will close the gate/door. The TTC
is reset by any signals from the open controls, loops, close edges, and close photoelectric sensors (IR’s).
8
REVERSAL FORCE dial:
The REVERSAL FORCE dial adjusts the force. See Force Adjustment section.
9
TEST BUTTONS:
The TEST BUTTONS will operate the gate/door (OPEN, STOP and CLOSE).
10
STATUS LEDs:
The STATUS LEDs indicate the status of the operator. See Status LED Chart in the Troubleshooting section.
11
DIAGNOSTIC CODE DISPLAY:
The diagnostic code display will show the operator type, firmware version, and diagnostic codes. The operator type will
display as "HC" followed by a "24" which indicates the operator type as HCTDCU. The firmware version will show after the operator type, example "1.2".
12
BACKDRIVE Switch:
ALWAYS set to SECURE to enable motor braking. To manually move the gate/door see page 26.
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