Mitsumi electronic FR-F520-0.75K, 55K Measuring Points and Instruments, 5VDC, 10VDC

Electrodynamic type single- phase wattmeter

Measuring Instrument

Moving-iron type AC voltmeter

Moving-iron type AC ammeter

P1 = W11 + W12 + W13 (3-wattmeter method)

Remarks

(Reference Measured Value) *

Commercial power supply Within permissible AC voltage fluctuation (Refer to 184 page)

PROTECTIVE FUNCTIONS

Measuring Points and Instruments

Item

Power supply voltage V1

Power supply side current I1

Power supply side power P1

Power supply side power factor Pf1

Output side voltage V2

Output side current I2

Output side power P2

Output side power factor Pf2

Converter output

Frequency setting signal

Frequency setting power supply

Frequency meter signal

Start signal

Select signal

Reset

Output stop

Alarm signal

Measuring Point

Across R-S, S-T and T-R

〈 Across L1-L2, L2-L3and L3-L1〉

R, S and T line currents

〈 L1, L2 and L3 line currents〉

At R, S and T, and across R-S, S-T and T-R

〈 At L1, L2 and L3, and across L1-L2, L2-L3and L3-L1〉

Calculate after measuring power supply voltage, power supply side current and power supply side power.

P1
Pf1 = 3 V1 ⋅ I1 ⋅ 100%
	Rectifier type AC voltmeter	Difference between phases is
Across U-V, V-Wand W-U		within ± 1% of maximum output
	(Note 1) (Not moving-iron type)
		voltage.
		Current should be equal to or less
U, V and W line currents	Moving-iron type AC ammeter	than rated inverter current.
	(Note 3)	Difference between phases is 10%
		or lower.
At U, V and W, and across U-V	Electrodynamic type single-	P2 = W21 + W22
		2-wattmeter method
and V-W	phase wattmeter
		(or 3-wattmeter method)

Calculate in similar manner to power supply side power factor.

P2
Pf2 = 3 V2 ⋅ I2 ⋅ 100%
			POWER lamp lit
Across P-N 〈 Across +	and −〉	Moving-coil type (such as	1.35 ⋅ V1
		tester)	Maximum 380V (760V) during
			regenerative operation
Across 2 (+ ) –5			0 to 5V/0 to 10VDC					is“5” common.
Across 1 (+ ) –5			0 to ± 5V/0 to ± 10VDC
Across 4 (+ ) –5			4 to 20mADC
Across 10 (+ ) –5			5VDC
Across 10E (+ ) –5			10VDC
			Approximately 5VDC at
			maximum frequency
			(without frequency meter)
						T1
				DC8V
Across FM (+ ) –SD		Moving-coil type (Tester, etc.
		may be used) (Internal				T2		common.
		resistance: 50kΩ or larger)
			Pulse width T1:
					Adjusted by Pr.900
			Pulse cycle T2: Set by Pr.55					is
					(Valid for frequency
								SD
					monitoring only)
			Approximately 10DVC at
Across AM (+ ) –5			maximum frequency
			(without frequency meter)
Across STF, STR, RH, RM, RL,
JOG, RT, AU, STOP, CS (+ ) -SD			20 to 30VDC when open.
Across RES (+ ) –SD			ON voltage: 1V or less
Across MRS (+ ) –SD
			Continuity check (Note 2)
Across A-C		Moving-coil type				<At OFF>	<At ON>
Across B-C		(such as tester)	Across A-C:			Discontinuity Continuity
			Across B-C:			Continuity	Discontinuity

Note 1. Accurate data will not be obtained by a tester.

2.When Pr. 195 "A, B, C terminal function selection" setting is positive logic.

3.When the carrier frequency exceeds 5kHz, do not use the instrument because eddy-current losses occurring in the metallic parts inside the instrument will increase and may lead to burnout.

In this case, use an approximate effective value type instrument.

*Values in parentheses are those of the 400V class.

183