2 Theory of Operation (continued)
2.19 Detection Circuit for Manual Bypass Switch
Located on
DR15
RR102
+12VSF
| 1 | UR43 |
RR107 | 2 |
|
CR66
TOMBYP
CNR13 | CR73 |
TO Manual Bypass Breaker | 1 |
2 |
G4
Located on NH-SYS-M board (System MCU and Control Circuit)
RR103
5VS
4 #TOMBYP_I
3 CR65
G1
(6) TOMBYP I | RM146 |
#TOMBYP I | |
| CM102 |
G1
(a)CNR13 connects to the auxiliary contact of the manual bypass switch.
(b)System MCU detects the status of the manual bypass switch via TOMBYP I (6). Manual bypass switch will stay in the OFF position and TOMBYO I (6) will be high.
2.20Detection Circuit for Output Breaker
Located on
+12VSF RR75
1 UR33
CR54 RR79 2
CNR10 | CR58 | |
1 | ||
| ||
2 |
| |
| G4 |
Located on NH-SYS-M board (System MCU and Control Circuit)
RR74
5VS
4 #OPCBAUX_I
3CR53
G1
(72) OPCBAUX_I | RM151 |
#OPCBAUX_I | |
| CM108 |
G1
(a)CNR10 connects to the auxiliary contact of the output breaker.
(b)System MCU detects the status of the output breaker via OPCBAUX_I (72). Output breaker stays in the OFF position and OPCBAUX_I (72) will be high.
66