LiftMaster SW470 SW490 GL BOARD Manual - Page 33

THREE PHASE WIRING DIAGRAM (SW490) SEE NOTE 4 ' ' ' ' 3 PHASE POWER IN ON/OFF SWITCH GL CONTROL BOARD 24 Vac - IN 24 Vac -COMMON J2 PLUG SOFT OPEN NC "B" LIMIT CONTACTOR B SEE NOTE 2 Note 1 24V Sec. ALARM ASSY 76-G0564 B- 460V MOTOR R 2 208/230V MOTOR O/L NOTE 4 575V MOTOR "A" LIMIT CONTACTOR A RPM - IN RPM - SUPPLY RPM GND RADIO COMMAND SHADOW +24 Vdc CLOSE STOP SOFT OPEN HARD OPEN INT. LOOP OBS. OPEN OBS. CLOSE 24 Vac - COMMON DC - GND LOCK 1 LOCK 2 ALARM 1 ALARM 1 RPM SENSOR J2 PLUG (OPTIONAL) R 3 R 4 SEE NOTE 5 B+ ALARM ASSY 76-G0564 1 2 J4 DUAL GATE LEGEND PERMANENT TERMINAL J1 TERMINAL BLOCK TERMINAL BLOCK R1 R2 R3 R4 24 Vac RADIO SIGNAL NOTES: 1) TRANSFORMER PRIMARY VOLTAGE SAME AS OPERATOR LINE VOLTAGE 24V SECONDARY 60VA. 2) WIRE COLOR: 208V RED, 230V ORANGE, 460V VIOLET, 575V GRAY 3) OPTIONAL WIRE HARNESS (SEE DRAWING 90-G0532). 4) OVERLOAD PROTECTION EITHER IN MOTOR OR FROM AN EXTERNAL OVERLOAD. 5) (B+) AND (B-) ARE 100dB SAFETY ALARMS. APPLICATIONS: CONTROL WIRING TYPE - GL FIELD WIRING & ADJUSTMENTS MODEL TYPES: HORSEPOWER: VOLTAGE/PHASE: SW490 (HSW) 1/2, 3/4 & 1 208,230,460 & 575V - 3 PHASE ONLY DRAWING NUMBER: 01-G1979-3 845 Larch Avenue, Elmhurst, IL 60125 DATE: 7/29/03 REVISION: E ECN: 03-0401 33