Hydraulic cutting machine control signal input system does not make the actuator action
A,oil pressure is normal, check the hydraulic cutting machine systems, determine the hydraulic pump, relief valve work.
B,check the actuator is there card locks.
C,check the amplifier input and output signal is normal, judging their work.
D,inspection of electro-hydraulic servo valve with electrical signals change and input, the oil pressure output is normal, to judge the electro-hydraulic servo-valve is not normal. Servo valve by the manufacturer.