Mitsubishi Electric FR-A500L Series Instruction Manual page 51

Measuring Points and Instruments
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.
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 3
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
Pf = 100%
1
3 V 1 •E I 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
Pf 2 = 100%
3 V 2 •E I 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,
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
Electrodynamic type single-
phase wattmeter
Moving-coil type (such as
tester)
Moving-coil type (Tester, etc.
may be used) (Internal
resistance: 50k or larger)
Moving-coil type
(such as tester)
40
Remarks
(Reference Measured Value)
•–
Commercial power supply
Within permissible AC voltage
•i
fluctuation Refer to Page 40
P = W W 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.
P = W W
2 21 22
2-wattmeter method (or 3-
wattmeter method)
POWER lamp lit
1.35 V
1
Maximum 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
•j