Mitsubishi Electric FR-A520-0.4K-NA Instruction Manual page 202

Item
Power supply voltage V
1
Power supply side
current I
1
Power supply side power
P
1
Power supply side power
factor Pf
1
Output side voltage V
2
Output side current I
2
Output side power P
2
Output side power factor
Pf
2
Converter output
Frequency setting signal
Frequency setting power
supply
Frequency meter signal
Start signal
Select signal
Reset
Output stop
Alarm signal
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 overcurrent 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 indicate those for 400V class.
Measuring Points and Instruments
Measuring Point
Across R-S, S-T and T-R
〈Across L
-L , L -L and L -L
1 2 2 3 3
R, S and T line currents
〈L
, L and L line currents〉
1 2 1
At R, S and T, and across R-S,
S-T and T-R
〈At L
L and L , and across
1, 2 3
〉
L -L , L -L and L -L
1 2 2 3 3 1
Calculate after measuring power supply voltage, power supply side current and power supply side
power.
P
1
× 100%
Pf =
1
× I
3 V
1 1
Across U-V, V-Wand W-U
U, V and W line currents
At U, V and W, and across U-V
and V-W
Calculate in similar manner to power supply side power factor.
P
2
× 100%
Pf =
2
× I
3 V
2 2
Across P-N 〈Across + and −〉
Across 2 (+) −5
Across 1 (+) −5
Across 4 (+) −5
Across 10 (+) −5
Across 10E (+) −5
Across FM (+) −SD
Across AM (+) −5
Across STF, STR, RH, RM, RL,
JOG, RT, AU, STOP, CS (+) −SD
Across RES (+) −SD
Across MRS (+) −SD
Across A-C
Across B-C
PROTECTIVE FUNCTIONS
Measuring Instrument
Moving-iron type AC voltmeter
〉
1
Moving-iron type AC ammeter
Electrodynamic type single-
phase wattmeter
Rectifier type AC voltmeter
(Note 1) (Not moving-iron type)
Moving-iron type AC ammeter
(Note 3)
Electrodynamic type single-
phase wattmeter
Moving-coil type (such as
tester)
Moving-coil type (Tester, etc.
may be used) (Internal
resistance: 50kΩ or larger)
Moving-coil type
(such as tester)
189
Remarks
(Reference Measured Value) *
Commercial power supply
Within permissible AC voltage
fluctuation
+ W + W
P = W
1 11 12 13
(3-wattmeter method)
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.
+ W
P = W
2 21 22
2-wattmeter method
(or 3-wattmeter method)
POWER lamp lit
1.35 × V
1
Maximum 380V (760V) during
regenerative operation
0 to 5V/0 to 10VDC
0 to ±5V/0 to ±10VDC
4 to 20mADC
5VDC
10VDC
Approximately 5VDC at
maximum frequency
(without frequency meter)
T1
DC8V
T2
Pulse width T1:
Adjusted by Pr.900
Pulse cycle T2: Set by Pr.55
(Valid for frequency
monitoring only)
Approximately 10DVC at
maximum frequency
(without frequency meter)
20 to 30VDC when open.
ON voltage: 1V or less
Continuity check (Note 2)
<At OFF> <At ON>
Across A-C: Discontinuity Continuity
Across B-C: Continuity Discontinuity