Mitsubishi FR - S500 instruction manual Inspection Interval

	Inspection				Interval
Areaof				Daily		year1	years2
		Inspection				Periodic*
		Item	Description					Method	Criterion	Instrument
			(1) Check					(1) Measure	(1) Phase-to-	Digital
			balance of					voltage	phase	multimeter,
			output					across	voltage	rectifier type
			voltages					inverter	balance	voltmeter
			across					output	within 4V
	Protectivecircuit		phases with					terminals U-	(8V) for
Controlcircuit			inverter					V-W.	200V
			operation					(2) Simulate	(400V).
			operated
		Operation	independently.					connection of (2) Fault must
		check	(2) Perform					inverter	occur
			sequence
								protective	because of
			protective
								circuit output	sequence.
			test to make					terminals.
			sure there is
			no fault in
			protective or
			display
			circuits.
system			(1) Check for					(1) Turn by hand	No unusual
			unusual					with power	vibration and
		Cooling	vibration and					off.	unusual noise.
Cooling		fan	noise.					(2) Visual check.
			connection.
			(2) Check for
			loose
			(1) Check for					(1) Lamps	(1) Check that
			LED lamp					indicate	lamps are
			blown.					indicator	lit.
Display		Display						lamps on
								panel.
			(2) Clean.					(2) Clean with
								rag.
			Check that						Must satisfy	Voltmeter,
			reading is					Check reading of specified and
		Meter								ammeter,
			normal.					meters on panel.	management
										etc.
									values.
			(1) Check for					(1) Auditory,	(1), (2) No fault.
			unusual					sensory,
			vibration					visual
			and noise.					checks.
		General	(2) Check for					(2) Check for
			unusual					unusual odor
Motor			odor.					due to
								overheat,
								damage, etc.
			(1) Check with					(1) Disconnect	5MΩ or more.	500V
			megger					cables from		megger
		Insulation	(across					U, V, W
		resistance	terminals					(including
			and ground					motor cables).
			terminal).

Note: The value for the 400V class is indicated in the parentheses.

* For periodic inspection, contact you nearest Mitsubishi sales representative.

152

3