E1 Series Servo Drive User Manual Troubleshooting And Maintenance
HIWIN MIKROSYSTEM CORP. 13-19
13.4 Causes and corrective actions for abnormal operation
Table13.4.1 Causes and corrective actions for abnormal operation
Operation Cause Confirmation Method Corrective Action
The servo drive is
not ready.
The voltage of control power
is below 220 Vac.
Use multimeter to measure if
the voltage of control power
observe if Bus voltage is
below 300
Interface signal monitor
Adjust the voltage of the
control power t
specified range.
An alarm occurs and has not
been cleared.
from the servo drive panel or
displayed in Last Error from
Refer to section 13.2.2 and
perform corrective action.
Motor parameters are not
set.
been done in Configuration
Refer to section 7.3 and set
motor parameters.
Forced stop input (FSTP)
signal is ON.
Check if the servo drive
panel displays “Stp”. Or
observe if the indicator for
FSTP signal input in
Interface signal monitor
window of Thunder is green.
(1) Set FSTP signal to OFF.
(2) If you are not using
forced stop function,
please set this function to
be always inactive by
Pt50F=t.X
(Allocation of forced stop
The servo motor is
not operating.
Servo on input (S-ON) signal
is OFF.
panel displays “nrd
observe if Servo on input
indicator
on the left of the
main screen of Thunder
does not light up.
(1) Set S-ON signal to ON.
(2) Check the setting of
Pt50A=t.X
(Allocation of servo on
input (S-ON) signal) and
input signal from the
allocated pin.
(3) Check if the signal output
from the controller is
The wiring for motor (CN2),
encoder (CN7) or control
signals (CN6) is poor. Or the
Check the wiring.
Check if the wiring of the
servo drive is correct.
Overtravel occurs when
servo ON.
Check if the position of the
forcer is not within the
allowable range.
Check if the position of the
forcer is not within the
The control mode is
incorrect.
Check if the selected control
mode is correct from
Parameters Setup window.
Check if the selected control
mode is correct by
Pt000=t.X (Control
The pulse command input is
incorrect (position mode).
value.
output from the controller is
The selection of pulse
command form is incorrect.
Check if the selected pulse
command
from Parameters Setup
Check if the selected pulse
command form is correct by
Pt200=t.X (Pulse
Command pulse inhibition
input (INHIBIT) signal is ON.
Check if the indicator for
INHIBIT signal input in
(1) Set INHIBIT signal to
OFF.