A SERVICE OF

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68
PRELIMINARY
2 Theory of Operation (continued)
2.21 Control Circuit for Power Module (continued)
Located on NH-SYS-R board (Circuit for RS232, Output Dry Contact, Parallel Port, Connector to connect with each Power Module,
Circuit for 2 Slots)
Located on NH-SYS-M board (System MCU and Control Circuit)
RR2 5
10K
5VS
1
2
4
3
UR14
TLP421(GRL)
CR2 3
104
G1
RR2 9
2K
DR2
1N4148
+12VSF
ID1OK
RR3 4
10K
5VS
1
2
4
3
UR18
TLP421(GRL)
CR2 9
104
G1
RR3 6
2K
DR5
1N4148
+12VSF
ID2OK
RR4 5
10K
5VS
1
2
4
3
UR22
TLP421(GRL)
CR3 4
104
G1
RR4 6
2K
DR7
1N4148
+12VSF
ID3OK
RR5 2
10K
5VS
1
2
4
3
UR26
TLP421(GRL)
CR4 1
104
G1
RR5 3
2K
DR9
1N4148
+12VSF
ID4OK
RR5 9
10K
5VS
1
2
4
3
UR28
TLP421(GRL)
CR4 8
104
G1
RR6 4
2K
DR11
1N4148
+12VSF
ID5OK
RR7 1
10K
5VS
1
2
4
3
UR32
TLP421(GRL)
CR5 1
104
G1
RR7 2
2K
DR12
1N4148
+12VSF
ID6OK
#ID1_OK
#ID2_OK
#ID3_OK
#ID4_OK
#ID5_OK
#ID6_OK
1
2
3
4
CN R20
CI33(V)-4P
ID1OK
ON
RR125
100
G4
1
2
3
4
CN R21
CI33(V)-4P
ID2OK
ON
RR126
365
G4
1
2
3
4
CN R22
CI33(V)-4P
ID3OK
ON
RR127
681
G4
1
2
3
4
CN R25
CI33(V)-4P
ID4OK
ON
RR128
1K1
G4
1
2
3
4
CN R26
CI33(V)-4P
ID5OK
ON
RR129
1K65
G4
1
2
3
4
CN R27
CI33(V)-4P
G4
ID6OK
ON
RR130
2K61
RR134
1K21
RR131
100
RR135
1K82
RR132
365
RR136
2K61
RR133
681
TO PM4 TO PM5 TO PM6TO PM1 TO PM2 TO PM3
1
2
4
3
UR41
RR9 7
+12VS
ON1
+12VSF
RR9 6
ON
(41)
(40)
(31)
(30)
(29)
(28)
RM106
200
CM5 7
103
G1
#ID1_OK
RM110
200
CM6 1
103
G1
#ID2_OK
RM114
200
CM6 5
103
G1
#ID3_OK
RM119
200
CM7 0
103
G1
#ID4_OK
RM124
200
CM8 3
103
G1
#ID5_OK
RM130
200
CM8 8
103
G1
#ID6_OK
ID1_OK
ID2_OK
ID3_OK
ID4_OK
ID5_OK
ID6_OK
2 15
UM8B
ON1
(42)
CM9 9
G1
POWER_ON
(c) System MCU can detect the status of the power module DSP chip via ID1_OK (28), ID2_OK (29), ID3_OK (30), ID4_OK (31), ID5_OK
(40) and ID6_OK (41). “Logic Low” means that the power module DSP chip is functioning properly. (ID5_OK and ID6_OK are not used for
reserve.)
(d) ON is connected to the relay driver of the auxiliary power supply inside the power module. If POWER_ON (42) is “Logic H,” then the auxiliary
power supply inside the power module is on.