Measuring Devices - Amtech Axpert-Eazy Series Instruction Manual

8-1-2 Periodic Inspections
Inspection item
Appearance
Interior
Terminal block
Cooling fan
Electrolytic capacitor
Insulation resistance
inspection
Encoder
8-1-3 Inspection of spares
The inspection shown in above table must also be performed for spare AC DRIVEs that are left
connected but are not used in normal operation. The operation of the AC DRIVE must be checked
every six months by turning the power on.

8-2 Measuring devices

As the voltage and current on the input and output sides include high harmonics, the measured value
will differ according to the measuring device. When measuring with a device for commercial
frequencies, measure with the following circuits and noted measuring devices.
Input voltage: Moving iron type voltmeter or Rectifying voltmeter
8
Output voltage: Moving iron type voltmeter
Input / output power: Electrodynamometer type wattmeter
Amtech
8.2
Inspection details and work
Check the state of dirt and dust on the vent or heatsink, and clean if
necessary.
Check the state of dirt and dust on the PCB and inside the equipment, and
clean if necessary.
Tighten the terminal block screws if loose.
Replace the fan every three years.
Confirm that there is no liquid leaking or sheath discoloration.
Do not perform a megger test on the AC DRIVE. When doing a megger test
on the external circuit, disconnect all wires connected to the AC DRIVE.
Confirm that there is no looseness or play in the bearings or couplings.
The bearings are durable parts. Life of bearing is approx. 10,000 hours at
6000rpm, and approx. 30,000 hours at 3000rpm.They must be replaced
periodically.