Mitsubishi Electric FR-E500 Instruction Manual page 202

Item Measuring Point
Power supply
Across R-S (L
voltage
L ) and T-R (L
3
(V1)
Power supply
R, S and T line currents
side current
(L , L
1 2
(I1)
Power supply At R (L
side power and across R-S (L
(P1) (L -L ) and T-R (L
2 3
Calculate after measuring power supply voltage, power supply side current and power
Power supply
supply side power.
side power factor
=
(Pf1)
Pf
1
Output side
voltage Across U-V, V-W and W-U
(V2)
Output side
current U, V and W line currents
(I2)
Output side
At U, V and W, and across
power
U-V and V-W
(P2)
Calculate in similar manner to power supply side power factor.
Output side
power factor
Pf2 =
(Pf2)
Across P-N (+ - −)
Converter output
Across 2 (positive)-5
Frequency
setting signal
Across 4 (positive)-5
Frequency
setting power Across 10 (positive)-5
supply
Across FM (positive)-SD
Frequency meter
signal
Across AM (+)-5
Start signal Across STF, STR, RH, RM,
Select signal RL, MRS, RES-SD
Reset Across RES (positive)-SD
Output stop Across MRS (positive)-SD
Across A-C
Alarm signal
Across B-C
Measuring Points and Instruments
-L ), S-T (L - Moving-iron type AC
1 2 2
-L ) voltmeter
3 1
Moving-iron type AC
and L line currents) ammeter
3
), S (L ) and T (L ), Electrodynamic type
1 2 3
-L ), S-T single-phase
1 2
-L ) wattmeter
3 1
P1
× 100%
× I1
3 V1
(Cannot be measured
by moving-iron type)
Moving-iron type AC
ammeter (Note 2)
Electrodynamic type
single-phase
wattmeter
P2
× 100%
× I2
3 V2
Moving-coil type
(such as tester)
Moving-coil type
(Meter, etc. may be
used)
(Internal resistance:
50kΩ or larger)
Moving-coil type
(Meter, etc. may be
used)
(Internal resistance:
50k Ω or larger)
Moving-coil type
(such as a meter)
186
PROTECTIVE FUNCTIONS
Measuring
Instrument (Reference Measured Value)
Is the commercial power supply
within permissible variation of AC
voltage (refer to page 188).
P1 = W11 + W12 + W13
(3-wattmeter method)
(Note 1)
Difference between phases is within
±1% of maximum output voltage.
Current should be equal to or less
than rated inverter current.
Difference between phases is 10%
or lower.
P2 = W21 + W22
2-wattmeter method (or 3-wattmeter
method)
Inverter LED display is lit. 1.35
Maximum 380V (760V) during
regenerative operation
0 to 5V/0 to 10VDC
4 to 20mADC
5VDC
Approximately 5VDC at
maximum frequency (without
frequency meter)
8VDC
Pulse width T1:
Adjusted with Pr. 900
Pulse cycle T2:
Set with Pr. 55
(Valid for frequency monitor-
ing only)
Approximately 10DVC at
maximum frequency (without
frequency meter)
20 to 30VDC when open.
ON voltage: 1V or less
Continuity check
A cross A -C : D iscontinuity C ontinuity
A cross B -C : C ontinuity
Remarks
×
V1
T1
T2
<Normal> <Fault>
D iscontinuity
5