7 Connection examples7.1 Size 1 (4 – 12 A)DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com 1237.1.5 Rotation direction reversal with soft stop rampQ1 = Cable and motorprotectionQ11 = mains contactor FWD(clockwise rotating field)Q12 = mains contactor REV(anticlockwise rotating field)F3 = optional semiconductorfuse for type 2 coordination inaddition to Q1Figure 86: Rotation direction reversal with rampK4T: Simulated RUNsignal -K2T is an off-delayedtiming relay (type ETR2)and simulates here theRUN signal. The resettime must be greaterthan the stop time (t-Stop) set on the softstarter. Switching to theother operatingdirection is onlypossible after the valueset here has elapsed.The soft stop is alsoactive here after anemergency-stopcommand.Figure 87: Control section Bidirectional operation￫ The control voltages (+U S) of the DS7 soft starter and the contactorcontrol must have the same potential: 24 V DC/AC or 120/230 V ACM3 ~1L13L25L32T14T26T3L1L2L3PEQ1Q21M1Q11F3Q12I > I > I >- A2 + U s(+) U s24 V AC/DC, 120/230 V AC(–) U sK4TK1FWDQ12K2K2Q11K1L01/L+L00/L-REVSTOPQ1Q11 Q12K4T B1A2A1t > t-StopQ21 A2A1Q12K2Q11K1K2K1K2K1FWD REV DS7 FWD REV
