Communication Circuit For Input Dry Contact And Repo - Tripp Lite SU60KX Manual

2 Theory of Operation (continued)

2.17 Communication Circuit for Input Dry Contact and REPO

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)
(a) System MCU will detect input dry contact via DRY_1 (79) and DRY_2 (80)
(b) REPO (Remote Emergency Power Off) can be detected via R_EPO (86) by system MCU (high active).
(c) When REPO has activated, System MCU will shut down the output. After the REPO release, the unit will stay in bypass mode.
5VS
M2
#R_EPO
CNX4
1 +12VSF
2 REPO
5VS
M3
DRY1
CNX5
1 +12VSF
2 IP_DRYA
3 +12VSF
4 IP_DRYB
5VS
DRY2
R_EPO
(86)
DRY_1
(79)
DRY_2
(80)
RX25
REPO
RX26
UX 11
RX28
4 1
CX14
3 2
G4
G1
INPUT DRY CONTACT
RX34
RX35
UX 12
RX37
4 1
CX17
3 2
G4
G1
RX42
RX44
UX 13
RX45
4 1
CX22
3 2
G4
G1
RM 118
#R_EPO
CM 69
G1
RM 123
DRY1
CM 82
G1
RM 129
DRY2
CM 87
G1
64
REPO
IP_DRYB