AUTOMATIC POWER COUNTUT SYSTEM FOR ELECTRIC REACH FORK TRUCK

摘要

An automatic power break system for an electric reach fork truck is provided to prevent generation of an error message due to misconception of a control unit by breaking only a power circuit supplied to a driving motor. An automatic power break system for an electric reach fork truck includes an operation time delay condenser(C1) and a line contactor(2). The operation time delay condenser is installed between both terminals of a line contactor coil(4). A resistor(R2) is installed in parallel with the line contactor operated by drive of the line contactor coil. A positive voltage supply terminal(B+) connected to one side terminal of the line contactor is connected to a power supply terminal(P1) of a control unit(3) through a key switch(1) and is connected a negative voltage supply power terminal(B-) through one side contact switch(F S1) of a reverse voltage break diode(D1), the line contactor coil, and a forward relay(FOR R). A reverse voltage break diode(D2) and a protect resistor(R1) are connected between the both terminals of the line contactor coil in series.