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6. Daily Maintenance and Periodic Inspection and Maintenance
6.1 Maintenance Tools
III-37
6. Daily Maintenance and Periodic Inspection and Maintenance
6.1 Maintenance Tools
(1) Measuring instruments
The following measuring instruments are used to confirm that the voltage is being supplied correctly to the
NC unit, to confirm that the wiring to the NC unit is correct, and to carry out simple troubleshooting.
Tool Condition Application
Tester
To check that the wiring to the NC unit is correct
before turning the power ON.
AC voltmeter Measure the AC power voltage.
The tolerable error is ±2%
or less.
To measures the AC power voltage being
supplied to the external 24VDC power supply
unit.
DC voltmeter Max. scale 30V.
The tolerable error is ±2%
or less.
To measure the DC power voltage.
External power supply 24V (control section,
machine input/output interface)
Battery voltage
HR081/HR082/HR083 DC output
Phase rotation
meter
To check the connection order of the AC 3-phase
input power supply.
Oscilloscope
General measurement and simple
troubleshooting
(Note 1) Currently, a high-accuracy digital multi-meter is commonly used as a tester. This digital
multi-meter can be used as both an AC voltmeter and an DC voltmeter.
(Note 2) A logic analyzer (sampling cycle 200MHz or more) is required for complicated troubleshooting.
(2) Tools
Screwdriver (large, medium, small)
Radio pliers
6.2 Maintenance Items
Maintenance is categorized into daily maintenance items (items to be carried at set intervals) and periodic
maintenance items (replacement of parts when life is reached).
Some parts will not function in a hardware manner when the life is reached, so these should be replaced
before the life is reached.
Class Name Life Inspection/replacement Remarks
Daily
maintenance
Escutcheon Once/two months
(Accordingly when dirty)
Periodic
maintenance
Battery
(lithium battery)
Cumulative data
holding time
45,000 hr
When battery voltage
drop caution alarm occurs
(Guideline: approx. 5
years)
Refer to
Section
6.3.2 (1).
Cooling fan
(control section)
30,000 hr Refer to left.
Other
consumable
parts
Operation board 10
6
punches Refer to left.