Delta Electronics ASDA-A2 Series User Manual page 580

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Delta AC servo drives are based on solid state electronics technology. Preventive maintenance
is required to operate this AC servo drives in its optimal condition, and to ensure a long life. It
is recommended to perform a periodic maintenance and inspection of the AC servo drive by a
qualified technician. Before any maintenance and inspection, always turn off the AC input
power to the unit.
 Be sure to disconnect AC power and ensure that the internal capacitors have fully
discharged before performing the maintenance and inspection!
Basic Inspection
After power is in connected to the AC servo drive, the charge LED will be lit which indicates
that the AC servo drive is ready.
Item
General Inspection
Inspection before
operation
(Control power is
not applied)
Revision January 2011
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Appendix B Maintenance and Inspection
 Periodically inspect the screws of the servo drive, motor shaft, terminal
block and the connection to mechanical system. Tighten screws as
necessary as they may loosen due to vibration and varying temperatures.
 Ensure that oil, water, metallic particles or any foreign objects do not fall
inside the servo drive, motor, control panel or ventilation slots and
holes. As these will cause damage.
 Ensure the correct installation and the control panel. It should be free
from airborne dust, harmful gases or liquids.
 Ensure that all wiring instructions and recommendations are followed;
otherwise damage to the drive and or motor may result.
 Inspect the servo drive and servo motor to insure they were not
damaged.
 To avoid an electric shock, be sure to connect the ground terminal of
servo drive to the ground terminal of control panel.
 Before making any connection, wait 10 minutes for capacitors to
discharge after the power is disconnected, alternatively, use an
appropriate discharge device to discharge.
 Ensure that all wiring terminals are correctly insulated.
 Ensure that all wiring is correct or damage and or malfunction may
result.
 Visually check to ensure that there are not any unused screws, metal
strips, or any conductive or inflammable materials inside the drive.
 Never put inflammable objects on servo drive or close to the external
regenerative resistor.
 Make sure control switch is OFF.
 If the electromagnetic brake is being used, ensure that it is correctly
wired.
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