Estun E21S - Appendix Common fault and troubleshooting

E21S Operation Manual
17
Appendix Common fault and troubleshooting
Fault
Trouble shooting
The screen don’t display when
power on.

The terminal of power supply wiring is error. Follow the
nameplate to rewire.

The source voltage is too low.

The connector is not connected well.
The back gauge motor doesn’t run
when X-axis is operated, but the
slider motor runs.
The wires of these two motor are in reverse, please rewire.
The motor doesn’t run when
operating.

Check whether the machine is impeded, or whether the
slider is back to TDC

Check whether the motor wire is connected well.
The motor can’t mutually convert
from high to low

Check whether the signal is in effect, or whether
frequency converter is normal.

Check whether parameter Mute Dis. is programmed
correctly.
The step can’t be changed in
Multi-Step mode.
Check the STEP terminal is connected to +24V when the
slider is on TDC.
The counter doesn’t work in
Multi-Step mode.
Check the STEP terminal is connected to +24V when the
slider is on TDC.
Lose control of the system

Check whether the encoder cable is connected well.

Check whether the motor direction wiring (X+, X-, A+,
A-, G+, G-) is correct.
The actual position of X-axis is
unchanged or unshown.
Check whether the encoder cable is connected well or
correctly.