Mitsubishi Electric FR-F800 Series Instruction Manual page 634

 Measuring points and instruments
Item
Input voltage
V1
Input current
I1
Input power
P1
Input power factor
Pf1
Output voltage
V2
Output current
I2
Output power
P2
Output power factor
Pf2
Converter output
Frequency setting
signal
Power supply for a
frequency setting
potentiometer
Frequency meter signal
Start signal,
selection signal,
reset signal,
output stop signal
Fault signal
*1 Use an FFT to measure the output voltage accurately. A tester or general measuring instrument cannot measure accurately.
*2 When the setting of Pr.195 ABC1 terminal function selection is the positive logic.
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Measuring point
Between R/L1 and S/L2,
S/L2 and T/L3, or T/L3 and
R/L1
Line current at R/L1, S/L2,
and T/L3
At R/L1, S/L2, and T/L3,
and between R/L1 and S/
L2, S/L2 and T/L3, and T/
L3 and R/L1
Calculate after measuring input voltage, input current and input power.
Between U and V, V and
W, or W and U
Line current at U, V, and W
At U, V, and W, and
between U and V, and V
and W
Calculate in similar manner to the input power
factor.
Between P/+ and N/-
2, and between 4(+) and 5
Between 1(+) and 5
Between 10(+) and 5
Between 10E(+) and 5
Between AM(+) and 5
Between CA(+) and 5
Between FM(+) and SD
Between STF, STR, RH,
RM, RL, JOG, RT, AU,
STP (STOP), CS, RES, or
MRS(+) and SD (for sink
logic)
Between A1 and C1
Between B1 and C1
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Measuring instrument
Digital power meter (designed for
inverter)
Digital power meter (designed for
*1
inverter)
Digital power meter (designed for
inverter)
Digital multimeter or other tester Inverter LED indication 1.35 × V1
Digital multimeter or other tester,
or moving-coil type instrument
(internal resistance 50 kΩ or
more)
Digital multimeter or other tester
7. PRECAUTIONS FOR MAINTENANCE AND INSPECTION
7.2 Measurement of main circuit voltages, currents, and powers
Remarks (reference measured value)
Commercial power supply. Within permissible AC
voltage fluctuation. (Refer to page
P1 = W11 + W12 + W13 (3-wattmeter method)
Difference between the phases is within 1% of the
maximum output voltage.
Difference between the phases is 10% or lower of
the rated inverter current.
P2 = W21 + W22
2-wattmeter method (or 3-wattmeter method)
0 to 10 VDC, 4 to 20 mA
0 to ±5 VDC and 0 to ±10 VDC
5.2 VDC
10 VDC
Approximately 10 VDC at maximum
frequency
(without frequency meter)
Approximately 20 mADC at
maximum frequency
Approximately 5 VDC at maximum
frequency
(without frequency meter)
T1
8VDC
T2
Pulse width T1: Adjust with C0
(Pr.900).
Pulse cycle T2: Set with Pr.55
(for frequency monitor only).
Voltage when terminal is open:
20 to 30 VDC
ON voltage: 1 V or less
*2
Continuity check
Normal: discontinuity across A1 and C1 (continuity
across B1 and C1)
Fault: continuity across A1 and C1 (discontinuity
across B1 and C1)
1
638.)
2
3
4
5
6
7
8
9
Terminal 5 is
a common
terminal.
10
Terminal SD
is a common
terminal.
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