Mitsubishi Electric 800 Series Instruction Manual page 53

 Measuring points and instruments
Item
Between R/L1 and S/L2, S/
Input voltage
L2 and T/L3, and T/L3 and R/
V1
*3
L1
R/L1, S/L2, T/L3 line
Input current
I1
current
At R/L1, S/L2, and T/L3, and
between R/L1 and S/L2, S/
Input power
L2 and T/L3, and T/L3 and R/
P1
*3
L1
Calculate after measuring input voltage, input current and input
power.
Input power factor
Pf1
Output voltage Between U and V, V and W,
V2 and W and U
Output current
Line current at U, V, and W
I2
Output power At U, V, and W, and between
P2 U and V, and V and W
Calculate in similar manner to the input power
Output power factor
Pf2
factor.
Converter output Between P/+ and N/-
Frequency setting
2, and between 4(+) and 5
signal
Power supply for a
frequency setting Between 10(+) and 5
potentiometer
[E800]
Between AM(+) and 5
Frequency meter signal
[E800]
Between FM(+) and SD
[E800]
Between terminal SD and
Start terminal
each of terminal STF, STR,
Multi-speed selection
RH, RM, RL, RES, and
terminal
MRS(+) (for sink logic)
Reset terminal
[E800-E]
Output stop terminal
Between DI0 and SD, and
DI1 and SD (for sink logic)
Relay output (fault Between A and C
output) terminal Between B and C
*1 Use an FFT to measure the output voltage accurately. A digital multimeter or general measuring instrument cannot measure accurately.
*2 When the setting of Pr.192 ABC terminal function selection is the positive logic.
Measuring point Measuring instrument
Digital power meter (designed
*3
for inverter)
[Three-phase power supply]
Digital power meter (designed
for inverter)
Digital power meter (designed
for inverter)
Digital multimeter or other
tester
Digital multimeter or other
tester, or moving-coil type
instrument (internal resistance
50 kΩ or more)
Digital multimeter or other
tester
Remarks (reference measured value)
Commercial power
Within permissible AC voltage fluctuation. (Refer to
the FR-E800 Instruction Manual (Connection) or
FR-E860 Instruction Manual (Connection).)
P1 = W11 + W12 + W13 (3-wattmeter method)
[Single-phase power supply]
Difference between the phases must be within 1%
of the maximum output voltage.
*1
Difference between the phases must be within
10%.
P2 = W21 + W22
2-wattmeter method (or 3-wattmeter method)
Inverter LED indication 1.35 × V1
0 to 10 VDC, 4 to 20 mA
5.2 VDC
Approximately 10 VDC at maximum
frequency
(without frequency meter)
Approximately 5 VDC at maximum
frequency
(without frequency meter)
T1
8VDC
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.
Voltage when signal is ON: 1 V or
less.
Continuity check
Normal: discontinuity across A and C, continuity
across B and C
Fault: continuity across A and C, discontinuity
across B and C
3. Precautions for Maintenance and Inspection
3.2 Measurement of main circuit voltages, currents, and powers
Terminal 5 is
a common
terminal.
T2
Terminal SD
is a common
terminal.
*2
1
2
3
4
5
6
7
8
9
10
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