Mitsubishi Electronics FR-S500 Current average value monitor signal H3 , H4 , H5, Plc

Maintenance parameters

1)H1 (Pr. 503) "maintenance timer"

•The cumulative energization time of the inverter is stored into the E2PROM every hour and indicated in 1000h increments. (Cannot be written.)

•The maintenance timer is clamped at 999 (999000h).

2)H2 (Pr. 504) "maintenance alarm output set time"

•Set the time when the maintenance timer alarm signal (Y95) is output.

•The setting unit is 1000h.

REMARKS

The factory setting (36000h) is the guideline for the main circuit smoothing capacitor life (about 10 years in the operating environment of 40°C (104°F) ambient temperature, 10h/day, and 365 days/ year) of the inverter. The lifetime changes depending on the operating environment of the inverter.

3)Maintenance timer alarm signal (Y95)

•Made valid by setting "95" (maintenance timer alarm output signal) in Pr. 64 or Pr. 65 (output terminal function selection).

•If the value set in H2 is equal to or greater than the H1 setting, the maintenance timer alarm output (Y95) turns off.

♦Related parameters♦

•Assignment of Y95 signal to terminal ⇒ Pr. 64 "RUN terminal function selection", Pr. 65 "A, B, C terminal function selection" (Refer to page 100)

2.12.2 Current average value monitor signal

(H3 , H4 , H5 )

The average value of the output current during constant speed operation and the maintenance timer value (maintenance parameter H1) are output as pulses to the current average value monitor signal (Y93).

The pulse width measured by inputting the signal to the I/O module of the PLC or the like can be used as a guideline for increase in output current due to abrasion of peripheral machines and elongation of belt and for aged deterioration of peripheral devices to know the maintenance time.

The current average value monitor signal (Y93) is output as pulse for 20s as 1 cycle and repeatedly output during constant speed operation.

		Output unit
Maintenance	PLC	Input unit	Inverter
time
			2

Parts have reached their life

Parameter	Name	Factory Setting Setting Range		Remarks
H3 (555)	Current average time	1s	0.1 to 1s	Setting is
H4 (556)	Data output mask time	0s	0 to 20s
				enabled when
	Current average value monitor
H5 (557)		1A	0.1 to 999A	Pr. 30 = "1"
	signal output reference current

The parameter number in parentheses is the one for use with the parameter unit (FR-PU04).

FUNCTIONS

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