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69
PRELIMINARY
2 Theory of Operation (continued)
2.21 Control Circuit for Power Module (continued)
Located on NH-SYS-M board (System MCU and Control Circuit)
Located on NH-SYS-M board (System MCU and Control Circuit)
(e) DATA_BUS is the communication bus between the system and its power modules. This signal also connects to the external parallel port.
(f) TOBYP and TOINV are used to control the bypass or inverter transfer. The system frame and power module determine these signals together.
These signals also connect to the external parallel port.
CR4 3
2
3
6
5
8
7
1 4
UR30
CR3 5
2
3
6
5
8
7
1 4
UR24
G4
G1
RR5 4
5VS
RR5 0
QR7
RR5 6
ZR4
G4
CR3 7
CR3 9
VS
DATA_BUS
RR6 2
+12VSF
RR6 3
CR4 6
+12VSF
5VS
RR6 1
5VS
CR4 7
G1
#DATA_TX
#DATA_RX
89
UR4D
7
1 2
14
UR4A
RR1
5VS
RR2
QR1
RR6
ZR1
G4
CR7
CR4
VS TOBYP
RR9
+12VSF
RR1 0
CR9
G1
RR8
5VS
CR1 0
1
2
4
3
UR3
1
2
4
3
UR6
#TOBYP_O
CR8
G1
5VS
RR1 2
5VS
RR1 3
QR2
RR1 6
ZR2
G4
CR1 6
CR1 5
VS TOINV
RR1 9
+12VSF
RR2 0
CR1 8
G1
RR1 8
5VS
CR1 9
1
2
4
3
UR7
1
2
4
3
UR10
#TOINV_O
#TOINV_I
#TOBYP_I
3 4
UR4B
G1
DR16
DR17
(119)
(120)
RM136
CM9 3
G1
#DATA_TX
RM142
CM9 8
G1
#DATA_RX
DATA_TX
DATA_RX
(46)
(131)
RM1 4 1
CM9 7
G1
#TOBYP_I
RM145
CM1 0 1
G1
#TOINV_O
TOBYP_I
TOINV_O
CM9 2
G1
#TOBYP_O
(130)
RM150
CM1 0 7
G1
#TOINV_I
TOINV_I