LiftMaster SL3000UL SL3000UL Manual - Page 19

LINKING MASTER / SECOND OPERATORS Use a 20 amp dedicated power circuit for each operator. Never run high voltage and low voltage wires in same conduit. Run low voltage 16-18 gauge wire in UL approved conduit to link operators together. Master Board Master/Second control boards are interchangeable. Second Board CENTER SAFETY EXIT Use shielded twisted wires for M/S link. CENTER SAFETY EXIT W4 G B A MS LINK Surge Suppressor Master/ Second Connection CENTER SAFETY EXIT SYSTEM ON SENSORS REVERSE SENSOR DC-BACKUP TIMER 60 3 OFF OPEN LEFT ON OPEN RIGHT POWER OVERLOAD MADE IN USA SENSOR ALARM Shield wire MUST be grounded to master operator Only. W4 G B A MS LINK CENTER SAFETY EXIT CLOSE STOP OPEN ALARM SENSOR COMMAND PROCESSED FIRE DEPT. STRIKE OPEN RADIO RECEIVER GATE LOCKED EXIT LOOP SAFETY LOOP CENTER LOOP RESET MOTOR ® OmniControl Surge SuppressorPatenPt /PNenQd4in1g0 NOTE: To adjust timers, see page 29. ALARM SENSOR DC-BACKUP SYSTEM ON SENSORS REVERSE SENSOR TIMER 60 3 OFF OPEN LEFT ON OPEN RIGHT COMMAND PROCESSED FIRE DEPT. STRIKE OPEN RADIO RECEIVER GATE LOCKED EXIT LOOP SAFETY LOOP CENTER LOOP RESET MOTOR CLOSE STOP OPEN POWER OVERLOAD MADE IN USA ® OmniControl Surge SuppressorPatenPt /PNenQd4in1g0 SENSOR ALARM CHASSIS GROUND G Ba m/S Link center Loop Safety Loop - exit Fire Dept Strike Open Loop Key Switch push Button + radio receiver Class 2 Supply 24 Volts DC CHASSIS GROUND Shield Wire Connect Master M/S Link G to Second M/S Link G. Connect Master M/S Link B to Second M/S Link B. Connect Master M/S Link A to Second M/S Link A. G Ba m/S Link center Loop Safety Loop - exit Fire Dept Strike Open Loop Key Switch push Button + radio receiver Class 2 Supply 24 Volts DC NOTE : Disconnect the second radio receiver when using a master/second setup. Partial Master/Individual Control In order for the following operation to occur, follow the instructions. Example: There is a double gate, the entry gate is to be opened with a radio transmitter and the exit gate with a free exit loop. Only one safety loop system is to open both gates, and a fire department switch should open both gates at the same time. 1. Connect the radio receiver to entry gate only. 2. Connect the exit loop to exit gate only. 3. Connect the safety loop to both entry and exit gates. Plug-in loop detectors not applicable (Observe polarity of voltage). 4. Connect the fire department switch to both entry and exit gates (Observe polarity of both operators). 17