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6-8
6-1 Inspection and Maintenance
6
Inspection and Mai
n
tenance
Note 2: A nearly infinite value is shown in a no-conduction state.
However, the value may not be infinite if the momentary conduction occurs through the influence
of the smoothing capacitor
The value shown ranges from a few to a few dozen
Ω
in a conduction state.
The Inverter or converter is in good shape if the values from various parameters are nearly equal,
though they are not consistent depending on the types of elements or testers.
Note 3: The regenerative braking circuit is provided for Inverters with a capacity of 22 kW or lower.
Tester polarity
Measurement
value
+ (red) - (black)
Co
nverter u
n
it
D1
R/L1
+1
No conduction
+1
R/L1
Conduction
D2
S/L2
+1
No conduction
+1
S/L2
Conduction
D3
T/L3
+1
No conduction
+1
T/L3
Conduction
D4
R/L1
N/-
Conduction
N/-
R/L1
No conduction
D5
S/L2
N/-
Conduction
N/-
S/L2
No conduction
D6
T/L3
N/-
Conduction
N/-
T/L3
No conduction
Inverter unit
TR1
U/T1
P/+2
No conduction
P/+2
U/T1
Conduction
TR2
V/T2
P/+2
No conduction
P/+2
V/T2
Conduction
TR3
W/T3
P/+2
No conduction
P/+2
W/T3
Conduction
TR4
U/T1
N/-
Conduction
N/-
U/T1
No conduction
TR5
V/T2
N/-
Conduction
N/-
V/T2
No conduction
TR6
W/T3
N/-
Conduction
N/-
W/T3
No conduction
Re
gen
era
tiv
e br
akin
g cir
cuit
TR7
RB
P/+2
No conduction
P/+2
RB
Conduction
RB
N/-
No conduction
N/-
RB
No conduction
Converter unit
+1 P/+2
RB
Regenerative
braking circuit
D1 D2
D3
R/L1
S/L2
T/L3
D4
D5
D6
C
N/-
TR7
Inverter unit
TR1
TR2
TR3
U/T1
V/T2
W/T3
TR4
TR5
TR6
Summary of Contents for 3G3RX Series
Page 1: ...Cat No I560 E1 03 USER S MANUAL SYSDRIVE RXSERIES High function General purpose Inverter ...
Page 2: ......
Page 17: ...Chapter 1 Overview 1 1 Functions 1 1 1 2 Appearance and Names of Parts 1 4 ...
Page 22: ......
Page 23: ...Chapter 2 Design 2 1 Installation 2 1 2 2 Wiring 2 6 ...
Page 48: ......
Page 108: ......
Page 324: ......
Page 337: ...Chapter 6 Inspection and Maintenance 6 1 Inspection and Maintenance 6 1 ...
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Page 437: ...Index ...
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