trouble shoots of shearing machine NC system

Trouble shooting of shearing machine NC system-Estun E21s

World machinery can supply hyraulic shearing machines with Estun E21 NC system. NC system is easy for operation and programmable for multi-steps shearing. This article is introducing the solution of maulfunction of the NC system.

When power on, the device will not display.

1)The electrode of power supply terminal is connected error; please see the information of power nameplate.

2)Voltage is too low.

3)Electrical outlet is not connected.

When X axle programming is operating, back gauge motor does not move, but Y AXIS motor moves.

1)Two motors are reversed. Reconnect.

When program is operating, motor does not move.

1)Check whether mechanical part has been locked or slider returns to upper dead center.

2)Check whether the motor wiring is connected well.

Motor can’t switch from high speed to low speed.

1)Check whether high-low speed signal has been sent or motor power is too small.
2)Check whether the parameter of distance conversion is correct.

When system is in multi-step programming, the program can’t change step.

1)Check when slider is on upper dead center, STEP terminal is connected to +24V or not.

When system is in multi-step programming, the program can’t count.

1)Check when slider is on upper dead center, STEP terminal is connected to +24V or not.

When programming is operating, the device loses control.

1)Check whether encoder cable is connected or not.

2)Check whether the motor-direction wiring is correct (X+, X-, A+, A-, G+, G-).

When programming is operating, system actual position will not display or change.

1)Check whether encoder wiring is correct or encoder cable is connected well.