4000 Switch Machine - Alstom

LATCHOUT DOGROTARYCAMSWITCHRETAININGRINGPIVOTARMPOINTDETECTORRODFigure 2-2. Latch Out Components1. The machine is at end-of-stroke (Reverse) - Latch out switch number 5 on the “reverse”rotary cam switch is closed. The motor can run.2. The machine moves to mid-stroke - The Latch out switch closes. Switch number 5 on the“reverse” and “normal” rotary cam switches open. The motor can run.3. The machine is at end-of-stroke (Normal) - Latch out switch number 5 on the “normal”rotary cam switch is closed. The motor can run.4. The points move 1/4” + 0.045” - The mechanical system latches out. Switch number 5 onthe “normal” rotary cam switch opens. (Now all three latchout switches are open.) Themotor cannot run.5. The latch out is reset - Latchout switch number 5 on the “normal” rotary cam switch closes.The motor can run.6. The machine moves to mid-stroke - The Latchout switch closes. Switch number 5 on the“normal” rotary cam switch opens. The motor can run.7. The machine is at end-of-stroke (Reverse) - Latchout switch number 5 on the “reverse”rotary cam switch is closed. The motor can run.8. The points move 1/4” + 0.045” - The mechanical system latches out. Switch number 5 onthe “reverse” rotary cam switch opens. (Now all three latchout switches are open.) Themotor cannot run.P2444, Rev. Jan/07 2-8ALSTOM Signaling Inc.