LiftMaster H J - NEW STYLE DISCONNECT Manual - Page 14
Three Phase Schematic Diagram, Volt - 3 Phase
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1742-3 THREE PHASE SCHEMATIC DIAGRAM 230V BRAKE (WHEN PRESENT) 230V BRAKE (WHEN PRESENT) 575V BRAKE (WHEN PRESENT) BRN GY PUR YEL BRN BL/BK 1 74 2 85 3 96 O/L* BL/BK BRN GY PUR YEL BRN BL/BK 1 74 2 85 3 96 O/L* BL/BK GY BRN PUR BRN YEL BL/BK 1 2 O/L* 3 BL/BK 230 VOLT - 3 PHASE MOTOR CONNECTION L3 3 PHASE POWER IN L2 L1 3 STOP 4 (YEL) OPEN * - SEE NOTE #2 460 VOLT - 3 PHASE MOTOR CONNECTION OVERLOAD (SEE NOTE #2) (BK) CL (BK) (BK) 4 3 OP 4 3 OP 2 1 CL 6 5 (BR) EXTERNAL INTERLOCK 5 (BRN) (YEL) HAND CHAIN INTL'K SWITCH (WHEN PRESENT) NC C 14 OP 1 13 (OR) (OR) 575 VOLT - 3 PHASE MOTOR CONNECTION OP 5 6 CL 1 2 (GY) (PUR) TO MOTOR (YEL) (BK) (BK) OVERLOAD (SEE NOTE #2) (BRN) (BRN) PRI. T1 (SEE NOTE #1) 24VAC SEC. (YEL) OPEN (OR) LIMIT SWITCH (OR) OP A1 A2 NC C WIRE NUT SAFETY EDGE AUX. CLOSE 10 (GY) LIMIT SWITCH NC C (GY) (OR) R1 (OR) (OR) (RED) R1 (RED) R3 (RED) OPEN & CLOSE 7 (YEL) C RADIO TO OPEN & CLOSE (OR) (YEL) R1 R2 CLOSE (PUR) (RED) TIMER TO CLOSE (OPTIONAL) (PUR) NC AUX. OPEN LIMIT SWITCH NO (PUR) 2 (PUR) 14 (RED) 13 (PUR) R1 (PUR) A2 CLOSE LIMIT SWITCH CL (PUR) A1 NC (PUR) C CL * - Shipped from Factory CLOSE CONTROL WIRING OPTIONS *C2 WIRING - Constant Presssure to Close RED WIRE ON TERMINAL #2 (Shipped from Factory) B2 WIRING - Momentary Contact to Close MOVE RED WIRE FROM TERMINAL #2 TO TERMINAL #3 NOTE: 1. Voltage same as line voltage 2. Overload in motor for models up to 3/4 Hp, located in limit box for 1 Hp and above. 14