12   Troubleshooting
12 - 48
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
Vibration is occurring 
at the same fre-
quency as the power 
supply.
Inductive noise is occurring. Check to see if the drive control 
signal lines are too long.
Shorten the control signal lines.
Check to see if the control sig-
nal lines and power supply 
lines are bound together.
• Separate control signal lines 
from power supply lines.
• Use a low-impedance power 
supply for control signals.
The command 
velocity or torque is 
not reached.
The input command value 
exceeds the velocity limit value 
or the torque limit value.
Check to see if the Internal limit 
active bit of Statusword is 
active.
Input the command value that 
does not exceed the velocity 
limit value or the torque limit 
value from the host controller.
Symptom Probable cause Check items Measures