Bypass Scr Temperature Detection; Communication Circuit For Rs232 - Tripp Lite SU60KX Manual

2 Theory of Operation (continued)

2.13 Bypass SCR Temperature Detection

Located on NH-SYS-M board (System MCU and Control Circuit)
Located on NH-SYS-S or NH-SYS-SA board (Driver Circuit for Bypass SCR)
(a) Temperature sensor (NTC) is screwed onto the heat-sink of bypass SCR and connected to CNSA6 on the NH-SYS-S or SA board.
(b) MCU detects the temperature via HS_TEMP (105).

2.14 Communication Circuit for RS232

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)
5VS
#TX_232
RR33
RR37
5VS
#RX_232
Located on NH-SYS-M board (System MCU and Control Circuit)
(a) System MCU TX_232 (23) transmits data via RS232 port.
(b) System MCU RX_232 (24) receives data via RS232 port.
5VREF
RM 76 RM 77
+12VS
6
2
5
STS_TH-
RM 87
CM 49
G1
G1
CON2(2.54)
RR26
CR21
+12VSF
UR15
2
QR4 3
D
G
S
CR27
G1 5VS
G1
UR20
RR43
6
5
G1
TX_232
(23)
RX_232
(24)
RM 79
5VS
DM 23
UM7B
RM 84
7 3
CM 48
G1
CNSA6
1 5VREF
2 STS_TH-
G4
232_RX
RR31
6
+12VSF
5
-12VSF
RR118
RR38
+12VSF
2
232_TX
3 RR44
D
QR5
G
S
RR47
G4
RM 107
#TX_232
CM 58
G1
RM 111
#RX_232
CM 62
G1
61
HS_TEMP
(105)
5
9
G4 4
8
3
232_TX
7
2
232_RX
6
1
CNR6
RS232 Port