OPTI-UPS MD120L - Manual (Page 21)

Chapter 1 Installation
18
J8
B
A
T
_
L
O
W
_
N
C
B
A
T
_
L
O
W
_
N
O
G
N
D
Fig 1-17 Battery warning dry contact interface diagram
Table 1-7 Battery warning dry contact interface description
Position Name Purpose
J8.1 BAT_LOW_NC Battery warning relay (normally closed) will be open during warning
J8.2 BAT_LOW_NO Battery warning relay (normally open) will be closed during warning
J8.3 GND Center of battery warning relay
1.7.6 Integrated Warning Output Dry Contact Interface
J9 is the integrated warning output dry contact interface, when one or more than one present
warning is triggered, the system will send an integrated warning information, and provide an auxiliary
dry contact signal via the isolation of a relay. The interface diagram is shown in fig 1-18, and description
is shown in table 1-8.
J9
A
L
A
R
M
_
N
C
A
L
A
R
M
_
N
O
G
N
D
Fig 1-18 Integrated warning dry contact interface diagram
Table 1-8 Integrated warning dry contact interface description
Position Name Purpose
J9.1 ALARM_NC Integrated warning relay (normally closed) will be open during warning
J9.2 ALARM_NO Integrated warning relay (normally open) will be closed during warning
J9.3 GND Centre of integrated warning relay
1.7.7 Mains Failure Warning Output Dry Contact Interface
J10 is the output dry contact interface for mains failure warning, when the mains fails, the system
will send a mains failure warning information, and provide an auxiliary dry contact signal via the isolation
of a relay. The interface diagram is shown in fig 1-19, and description is shown in table 1-9.