LiftMaster LA400 LA400 Manual - Page 38

ADDITIONAL FEATURES » LOOP INPUTS + PHOTO/EDGE INPUTS (P6-7-8 AND 9) LOOP INPUTS OPEN INPUT AND EXIT LOOP These terminals are intended for use as a general open control. Accessories such as telephone entry systems, radio receivers (open only applications), exit loop detectors, keypads and 7-day timers may be wired to this input. SHADOW LOOP INPUT TERMINAL AND COMMON This input protects cars by preventing the gate from moving off of the open or close limit when the shadow loop input is active. NOTE: Shadow loop is disabled when gate is moving. INTERRUPT LOOP INPUT TERMINAL AND COMMON This input functions to reverse a closing gate to the open limit. Latching this input will reset the timer to close. SHADOW LOOP INPUTS INTERRUPT GR COM LD A 32V BATT 2 BATT 1 S8 NORMALLY OPEN SHADOW LOOP NORMALLY OPEN INTERRUPT LOOP COMMON LOOP PRESENCE RELAY 2 LOOP INPUTS C2 FREEQQ SENS MADE IN USA EXIT LOOP NOTE: Additional enclosure required. Refer to loop detector manufacturer instructions for connections. PHOTO/EDGE INPUTS (P6-7-8 AND 9) TERMINAL P6 - CLOSE SAFETY EDGE This input will reverse a closing gate. It will disable the Timer-to-Close if that feature has been enabled. Activating this input while the gate is opening will have no effect. Order part number LA400-BOX to enclose safety electronics. CLOSE EDGE OPEN EDGE/ PHOTO OPEN PHOTO TERMINAL P8 - OPEN SAFETY EDGE/PHOTOELECTRIC SENSOR (ENTRAPMENT) CLOSE PHOTO If an Open Edge device or a Retro-Reflective Photoelectric Sensor has been connected to Terminal P8, then this input will reverse an opening gate for 2 seconds C2 then stop. Activating this input with an Open Edge device or a Retro-Reflective Photoelectric Sensor connected to Terminal P8 while the gate is closing will have no effect. If a Chamberlain Pulsing Photoelectric Sensor (See Accessories) has been connected to Terminal P8, then this input will pause an opening gate until the obstruction has been removed. Upon removing the obstruction, the gate will continue to open. Activating this input with a Chamberlain Pulsing Photoelectric Sensor (See Accessories) connected to Terminal P8 while the gate is closing will have no effect. TERMINAL P7 - OPEN SAFETY PHOTOELECTRIC SENSOR (ENTRAPMENT) This input will pause an opening gate until the obstruction has been removed. Upon removing the obstruction, the gate will continue to open. Activating this input while the gate is closing will have no effect. TERMINAL P9 - CLOSE SAFETY PHOTOELECTRIC SENSOR This input will reverse a closing gate to the open limit. Activating this input while the gate is opening will have no effect. The Timer-to-Close will reactivate at the open limit. 37 blue brown CLOSE EDGE OPEN EDGE PHOTO brown blue brown blue OPEN PHOTO brown blue brown blue CLOSE PHOTO brown blue