Delta Electronics ASDA-AB manual Maintenance and Inspection, Basic Inspection

Chapter 9 Maintenance and Inspection

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.

¾Be sure to disconnect AC power and ensure that the internal capacitors have fully discharged before performing

the maintenance and inspection!

9.1Basic 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	Content
	z 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.
	z Ensure that oil, water, metallic particles or any foreign objects do not fall inside
General Inspection	the servo drive, motor, control panel or ventilation slots and holes. As these will
	cause damage.
	z Ensure the correct installation and the control panel. It should be free from
	airborne dust, harmful gases or liquids.
	z Ensure that all wiring instructions and recommendations are followed; otherwise
	damage to the drive and or motor may result.
	z Inspect the servo drive and servo motor to insure they were not damaged.
	z To avoid an electric shock, be sure to connect the ground terminal of servo drive
	to the ground terminal of control panel.
	z Before making any connection, wait 10 minutes for capacitors to discharge after
	the power is disconnected, alternatively, use an appropriate discharge device to
	discharge.
Inspection before	z Ensure that all wiring terminals are correctly insulated.
	z Ensure that all wiring is correct or damage and or malfunction may result.
operation	z Visually check to ensure that there are not any unused screws, metal strips, or
(Control power is not
applied)	any conductive or inflammable materials inside the drive.
	z Never put inflammable objects on servo drive or close to the external
	regenerative resistor.
	z Make sure control switch is OFF.
	z If the electromagnetic brake is being used, ensure that it is correctly wired.
	z If required, use an appropriate electrical filter to eliminate noise to the servo drive.
	z Ensure that the external applied voltage to the drive is correct and matched to the
	controller.

Revision January 2009 9-1