51 SY 5 2 40 A LL 3 Explosion-proof 5 7 51-SY5000 51-SY7000 Series How to Order Valve 1 2 3 4 5 2-position single 2-position double 3-position closed center 3-position exhaust center 3-position pressure center Type of actuation Nil R Internal pilot External pilot Pilot type A B F Z728.H (51-SYE100-A) MTL728P + (51-SYE100-B) KFD0-SD2-Ex1.1065 (51-SYE100-F) System Note 1) Note 2) Symbol 3 6 10 15 20 30 100 Lead wire length 300 mm 600 mm 1000 mm 1500 mm 2000 mm 3000 mm 10000 mm Note . Maximum length 600 mm for L-type . . . . Semi-standard Lead wire length Nil D E Non-locking push type Push-turn locking slotted type Push-turn locking lever type Manual override Symbol L Electrical entry L-type plug connector Electrical entry Note) The lead wire of TT-type is connected to the terminal block. LL L-type plug connector with cover TT Note) Terminal type 51 Intrinsically safe explosion-proof structure Note 1) Attached barrier type The numbers in ( ), 51-SYE100- represents SMC’s control number. Note 2) If the barrier is not necessary due to valve replacement etc, enter O after the system symbol. Example) 51-SY5140-AOLL3 34 Base Mounted Series 51-SY5000/7000 B