Chapter 7 – Trouble Shooting & Maintenance
7-8
1)
Diode module and IGBT module check (7.5~ 40HP)
Module
Test polarity
Check
value
Number
Test polarity
Check
value
+
-
+
-
Diode
D1
R DCP+
Closed
D4
R N
Open
DCP+ R Open
N R Closed
D2
S DCP+
Closed
D5
S N
Open
DCP+ S Open
N S Closed
Diode D3
T DCP+
Closed
D6
T N
Open
DCP+ T Open
N T Closed
IGBT
Tr1
U DCP
Closed
Tr4
U N
Open
DCP U Open
N U
Closed
Tr3
V DCP
Closed
Tr6
V N
Open
DCP V Open
N V
Closed
Tr5
W DCP
Closed
Tr2
W N
Open
DCP W Open
N W
Closed
Charge resistor
M/C
R
S
T
U
V
W
D1
+
Electrolytic
capacitors
DCP
N
Tr3
Tr6
Tr5
Tr2
Tr1
Tr4
DCP+
D2
D3
D4
D5
D6
Summary of Contents for RSi SG Series
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